Merge branch 'master' into dev/aozgaa/cSharpObjLiteralFormatting

lib/cs/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Přistupující objekty musí být abstraktní nebo neabstraktní.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Přidat {0} k existující deklaraci importu z {1}",
   "Add_async_modifier_to_containing_function_90029": "Přidat modifikátor async do obsahující funkce",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Přidat kontrolní výraz jednoznačného přiřazení k vlastnosti {0}",
   "Add_index_signature_for_property_0_90017": "Přidat signaturu indexu pro vlastnost {0}",
+  "Add_initializer_to_property_0_95019": "Přidat inicializační výraz k vlastnosti {0}",
   "Add_missing_super_call_90001": "Přidat chybějící volání metody super()",
   "Add_this_to_unresolved_variable_90008": "Přidat k nerozpoznané proměnné this.",
+  "Add_undefined_type_to_property_0_95018": "Přidat typ undefined k vlastnosti {0}",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Přidání souboru tsconfig.json vám pomůže uspořádat projekty, které obsahují jak soubory TypeScript, tak soubory JavaScript. Další informace najdete na adrese https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Další kontroly",
   "Advanced_Options_6178": "Upřesnit možnosti",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Všechny deklarace {0} musí mít stejné modifikátory.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Všechny deklarace {0} musí mít stejné parametry typu.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Všechny deklarace abstraktní metody musí jít po sobě.",
+  "All_imports_in_import_declaration_are_unused_6192": "Žádné importy z deklarace importu se nepoužívají.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Povolte výchozí importy z modulů bez výchozího exportu. Nebude to mít vliv na generování kódu, jenom na kontrolu typů.",
   "Allow_javascript_files_to_be_compiled_6102": "Povolí kompilaci souborů javascript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "Když se zadá příznak --isolatedModules, nepovolují se ambientní výčty.",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Povolí experimentální podporu pro dekorátory ES7.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Povolí experimentální podporu pro generování metadat typu pro dekorátory.",
   "Enum_0_used_before_its_declaration_2450": "Výčet {0} se používá dříve, než se deklaruje.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Deklarace výčtu jdou sloučit jenom s oborem názvů nebo jinými deklaracemi výčtu.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Všechny deklarace výčtu musí být konstantní nebo nekonstantní.",
   "Enum_member_expected_1132": "Očekává se člen výčtu.",
   "Enum_member_must_have_initializer_1061": "Člen výčtu musí mít inicializátor.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Soubor {0} není pod kořenovým adresářem rootDir {1}. Očekává se, že rootDir bude obsahovat všechny zdrojové soubory.",
   "File_0_not_found_6053": "Soubor {0} se nenašel.",
   "File_change_detected_Starting_incremental_compilation_6032": "Zjistila se změna souboru. Spouští se přírůstková kompilace...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Soubor je modul CommonJS; může se převést na modul ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Název souboru {0} se od už zahrnutého názvu souboru {1} liší jenom velikostí písmen.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "Název souboru {0} má příponu {1} – odstraňuje se",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "Specifikace souboru nemůže obsahovat nadřazený adresář (..), který se vyskytuje za rekurzivním zástupným znakem adresáře (**): {0}.",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "Deklarace importu je v konfliktu s místní deklarací {0}.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Deklarace importu v oboru názvů nemůžou odkazovat na modul.",
   "Import_emit_helpers_from_tslib_6139": "Importovat pomocné rutiny pro generování z tslib",
+  "Import_may_be_converted_to_a_default_import_80003": "Import se může převést na výchozí import.",
   "Import_name_cannot_be_0_2438": "Název importu nemůže být {0}.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Deklarace importu nebo exportu v deklaraci ambientního modulu nemůže odkazovat na modul pomocí jeho relativního názvu.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Importy nejsou povolené v rozšířeních modulů. Zvažte jejich přesunutí do uzavírajícího externího modulu.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "Značka JSDoc @{0} není připojená k třídě.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc ... se může nacházet jen v posledním parametru signatury.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "Značka JSDoc @param má název {0}, ale neexistuje žádný parametr s tímto názvem.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "Značka JSDoc @param má název {0}, ale žádný parametr s tímto názvem neexistuje. Musí odpovídat hodnotě arguments, pokud má typ pole.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "Značka JSDoc @typedef by měla mít poznámku k typu nebo by za ní měly následovat značky @property nebo @member.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Typy JSDoc se můžou používat jenom v dokumentačních komentářích.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Typy JSDoc se můžou přesunout na typy TypeScript.",
   "JSX_attribute_expected_17003": "Očekával se atribut JSX.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Atributy JSX musí mít přiřazený neprázdný výraz.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "Element JSX {0} nemá odpovídající uzavírací značku.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Elementy JSX nemůžou mít víc atributů se stejným názvem.",
   "JSX_expressions_must_have_one_parent_element_2657": "Výrazy JSX musí mít jeden nadřazený element.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Fragment JSX nemá odpovídající uzavírací značku.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Při použití vložené direktivy pragma objektu pro vytváření JSX se nepodporuje fragment JSX.",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "Při použití --jsxFactory se nepodporuje fragment JSX.",
   "JSX_spread_child_must_be_an_array_type_2609": "Podřízený objekt JSX spread musí být typu pole.",
   "Jump_target_cannot_cross_function_boundary_1107": "Cíl odkazu nemůže překročit hranici funkce.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Modul {0} už exportoval člena s názvem {1}. Zvažte možnost vyřešení nejednoznačnosti explicitním opakováním exportu.",
   "Module_0_has_no_default_export_1192": "Modul {0} nemá žádný výchozí export.",
   "Module_0_has_no_exported_member_1_2305": "V modulu {0} není žádný exportovaný člen {1}.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "Modul {0} nemá žádný exportovaný člen {1}. Neměli jste na mysli {2}?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Modul {0} je skrytý místní deklarací se stejným názvem.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Modul {0} se překládá na nemodulovou entitu a nedá se importovat pomocí tohoto konstruktoru.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Modul {0} používá export = a nedá se použít s možností export *.",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Vyvolá chybu u výrazů this s implikovaným typem any.",
   "Redirect_output_structure_to_the_directory_6006": "Přesměrování výstupní struktury do adresáře",
   "Remove_declaration_for_Colon_0_90004": "Odebrat deklaraci pro {0}",
+  "Remove_import_from_0_90005": "Odebrat import z {0}",
   "Replace_import_with_0_95015": "Nahradí import použitím: {0}.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Oznámí se chyba, když některé cesty kódu ve funkci nevracejí hodnotu.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Oznámí se chyby v případech fallthrough v příkazu switch.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Umožňuje nahlásit chyby u nevyužitých místních hodnot.",
   "Report_errors_on_unused_parameters_6135": "Umožňuje nahlásit chyby u nevyužitých parametrů.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Požadované parametry typu nemůžou být až za volitelnými parametry typu.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "Překlad pro modul {0} se v mezipaměti nenašel.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "Překlad pro modul {0} se našel v mezipaměti umístění {1}.",
   "Resolving_from_node_modules_folder_6118": "Překládá se ze složky node_modules...",
   "Resolving_module_0_from_1_6086": "======== Překládá se modul {0} z {1}. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Překládá se název modulu {0} relativní k základní adrese URL {1}–{2}.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "Deklarace proměnné příkazu for...in nemůže obsahovat inicializátor.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "Deklarace proměnné příkazu for...of nemůže obsahovat inicializátor.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "Příkaz with není podporovaný. Všechny symboly s blokem with budou typu any.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Tato funkce konstruktoru se může převést na deklaraci třídy.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Tato syntaxe vyžaduje importovanou podpůrnou aplikaci, ale modul {0} se nenašel.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Tato syntaxe vyžaduje importovanou podpůrnou aplikaci s názvem {1}, ale modul {0} nemá žádného exportovaného člena {1}.",
   "Trailing_comma_not_allowed_1009": "Čárka na konci není povolená.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "Seznam deklarací proměnných nemůže být prázdný.",
   "Version_0_6029": "Verze {0}",
   "Watch_input_files_6005": "Sledovat vstupní soubory",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Určuje, jestli se místo vymazání obrazovky má zachovat zastaralý výstup konzoly v režimu sledování.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Nejde přejmenovat elementy definované ve standardní knihovně TypeScriptu.",
   "You_cannot_rename_this_element_8000": "Tento element nejde přejmenovat.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "Objekt {0} přijímá málo argumentů k tomu, aby se dal použít jako dekoratér. Nechtěli jste ho nejprve volat a napsat @{0}()?",

lib/de/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Beide Accessoren müssen abstrakt oder nicht abstrakt sein.",
   "Add_0_to_existing_import_declaration_from_1_90015": "\"{0}\" der vorhandenen Importdeklaration aus \"{1}\" hinzufügen",
   "Add_async_modifier_to_containing_function_90029": "Async-Modifizierer zur enthaltenden Funktion hinzufügen",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Definitive Zuweisungsassertion zu Eigenschaft \"{0}\" hinzufügen",
   "Add_index_signature_for_property_0_90017": "Indexsignatur für die Eigenschaft \"{0}\" hinzufügen",
+  "Add_initializer_to_property_0_95019": "Initialisierer zu Eigenschaft \"{0}\" hinzufügen",
   "Add_missing_super_call_90001": "Fehlenden super()-Aufruf hinzufügen",
   "Add_this_to_unresolved_variable_90008": "Der nicht aufgelösten Variablen \"this.\" hinzufügen",
+  "Add_undefined_type_to_property_0_95018": "undefined-Typ zu Eigenschaft \"{0}\" hinzufügen",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Das Hinzufügen einer \"tsconfig.json\"-Datei erleichtert die Organisation von Projekten, die sowohl TypeScript- als auch JavaScript-Dateien enthalten. Weitere Informationen finden Sie unter https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Zusätzliche Überprüfungen",
   "Advanced_Options_6178": "Erweiterte Optionen",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Alle Deklarationen von \"{0}\" müssen identische Modifizierer aufweisen.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Alle Deklarationen von \"{0}\" müssen identische Typparameter aufweisen.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Alle Deklarationen einer abstrakten Methode müssen aufeinanderfolgend sein.",
+  "All_imports_in_import_declaration_are_unused_6192": "Keiner der Importe in der Importdeklaration wird verwendet.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Standardimporte von Modulen ohne Standardexport zulassen. Dies wirkt sich nicht auf die Codeausgabe aus, lediglich auf die Typprüfung.",
   "Allow_javascript_files_to_be_compiled_6102": "Kompilierung von JavaScript-Dateien zulassen.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "const-Umgebungsenumerationen sind unzulässig, wenn das Flag \"-isolatedModules\" angegeben wird.",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Ermöglicht experimentelle Unterstützung für asynchrone ES7-Decorators.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Ermöglicht experimentelle Unterstützung zum Ausgeben von Typmetadaten für Decorators.",
   "Enum_0_used_before_its_declaration_2450": "Enumeration \"{0}\", die vor der Deklaration wurde.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Enumerationsdeklarationen können nur mit Namespace- oder anderen Enumerationsdeklarationen zusammengeführt werden.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Enumerationsdeklarationen müssen alle konstant oder nicht konstant sein.",
   "Enum_member_expected_1132": "Ein Enumerationsmember wurde erwartet.",
   "Enum_member_must_have_initializer_1061": "Ein Enumerationsmember muss einen Initialisierer aufweisen.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Datei \"{0}\" befindet sich nicht unter \"rootDir\" \"{1}\". \"rootDir\" muss alle Quelldateien enthalten.",
   "File_0_not_found_6053": "Die Datei \"{0}\" wurde nicht gefunden.",
   "File_change_detected_Starting_incremental_compilation_6032": "Es wurde eine Dateiänderung erkannt. Die inkrementelle Kompilierung wird gestartet...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Die Datei ist ein CommonJS-Modul, sie kann in ein ES6-Modul konvertiert werden.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Der Dateiname \"{0}\" unterscheidet sich vom bereits enthaltenen Dateinamen \"{1}\" nur hinsichtlich der Groß-/Kleinschreibung.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "Der Dateiname \"{0}\" weist eine Erweiterung \"{1}\" auf. Diese wird entfernt.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "Die Dateispezifikation darf kein übergeordnetes Verzeichnis (\"..\") enthalten, das nach einem rekursiven Verzeichnisplatzhalter (\"**\") angegeben wird: \"{0}\".",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "Die Importdeklaration verursacht einen Konflikt mit der lokalen Deklaration von \"{0}\".",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Importdeklarationen in einem Namespace dürfen nicht auf ein Modul verweisen.",
   "Import_emit_helpers_from_tslib_6139": "Ausgabehilfsprogramme aus \"tslib\" importieren.",
+  "Import_may_be_converted_to_a_default_import_80003": "Der Import kann in einen Standardimport konvertiert werden.",
   "Import_name_cannot_be_0_2438": "Der Importname darf nicht \"{0}\" sein.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Import- oder Exportdeklaration in einer Umgebungsmoduldeklaration dürfen nicht über den relativen Modulnamen auf ein Modul verweisen.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Importe sind in Modulerweiterungen unzulässig. Verschieben Sie diese ggf. in das einschließende externe Modul.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc \"@{0}\" ist keiner Klassendeklaration zugeordnet.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "Das JSDoc-Tag \"...\" wird möglicherweise nur im letzten Parameter einer Signatur angezeigt.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "Das JSDoc-Tag \"@param\" weist den Namen \"{0}\" auf, es gibt jedoch keinen Parameter dieses Namens.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "Das JSDoc-Tag \"@param\" weist den Namen \"{0}\" auf, es ist jedoch kein Parameter dieses Namens vorhanden. Es läge eine Übereinstimmung mit \"arguments\" vor, wenn ein Arraytyp vorläge.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "Das JSDoc-Tag \"@typedef\" muss entweder eine Typanmerkung aufweisen, oder die Tags \"@property\" oder \"@member\" müssen darauf folgen.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc-Typen können nur innerhalb von Dokumentationskommentaren verwendet werden.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc-Typen können in TypeScript-Typen verschoben werden.",
   "JSX_attribute_expected_17003": "Ein JSX-Attribut wurde erwartet.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "JSX-Attributen darf nur ein nicht leeres expression-Objekt zugewiesen werden.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "Das JSX-Element \"{0}\" weist kein entsprechendes schließendes Tag auf.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX-Elemente dürfen nicht mehrere Attribute mit dem gleichen Namen aufweisen.",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX-Ausdrücke müssen ein übergeordnetes Element aufweisen.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Das JSX-Fragment weist kein entsprechendes schließendes Tag auf.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Ein JSX-Fragment wird bei Verwendung eines Inline-JSX-Factory-Pragmas nicht unterstützt.",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "Das JSX-Fragment wird bei Verwendung von --jsxFactory nicht unterstützt.",
   "JSX_spread_child_must_be_an_array_type_2609": "Die untergeordnete JSX-Verteilung muss ein Arraytyp sein.",
   "Jump_target_cannot_cross_function_boundary_1107": "Das Sprungziel darf die Funktionsgrenze nicht überschreiten.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Das Modul \"{0}\" hat bereits einen Member mit dem Namen \"{1}\" exportiert. Erwägen Sie, ihn explizit erneut zu exportieren, um die Mehrdeutigkeit zu vermeiden.",
   "Module_0_has_no_default_export_1192": "Das Modul \"{0}\" weist keinen Standardexport auf.",
   "Module_0_has_no_exported_member_1_2305": "Das Modul \"{0}\" weist keinen exportierten Member \"{1}\" auf.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "Das Modul \"{0}\" umfasst keinen exportierten Member \"{1}\". Meinten Sie \"{2}\"?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Das Modul \"{0}\" wird durch eine lokale Deklaration mit dem gleichen Namen ausgeblendet.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Das Modul \"{0}\" wird in eine Nicht-Modulentität aufgelöst und darf nicht mithilfe dieses Konstrukts importiert werden.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Das Modul \"{0}\" verwendet \"export =\" und darf nicht mit \"export *\" verwendet werden.",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Fehler für \"this\"-Ausdrücke mit einem impliziten any-Typ auslösen.",
   "Redirect_output_structure_to_the_directory_6006": "Die Ausgabestruktur in das Verzeichnis umleiten.",
   "Remove_declaration_for_Colon_0_90004": "Deklaration entfernen für: {0}",
+  "Remove_import_from_0_90005": "Import aus \"{0}\" entfernen",
   "Replace_import_with_0_95015": "Ersetzen Sie den Import durch \"{0}\".",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Fehler melden, wenn nicht alle Codepfade in der Funktion einen Wert zurückgeben.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Für FallTrough-Fälle in switch-Anweisung Fehler melden.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Fehler für nicht verwendete lokale Variablen melden.",
   "Report_errors_on_unused_parameters_6135": "Fehler für nicht verwendete Parameter melden.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Erforderliche Typparameter dürfen nicht auf optionale Typparameter folgen.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "Die Auflösung für das Modul \"{0}\" wurde im Cache gefunden.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "Die Auflösung für das Modul \"{0}\" wurde im Cache des Standorts \"{1}\" gefunden.",
   "Resolving_from_node_modules_folder_6118": "Auflösen aus dem Ordner \"node_modules\"...",
   "Resolving_module_0_from_1_6086": "======== Das Modul \"{0}\" aus \"{1}\" wird aufgelöst. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Der Modulname \"{0}\" relativ zur Basis-URL \"{1}\"–\"{2}\" wird aufgelöst.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "Die Variablendeklaration einer for...in-Anweisung darf keinen Initialisierer aufweisen.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "Die Variablendeklaration einer for...of-Anweisung darf keinen Initialisierer aufweisen.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "Die with-Anweisung wird nicht unterstützt. Alle Symbole in einem with-Block weisen den Typ \"any\" auf.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Diese Konstruktorfunktion kann in eine Klassendeklaration konvertiert werden.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Diese Syntax erfordert ein importiertes Hilfsprogramm, aber das Modul \"{0}\" wurde nicht gefunden.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Diese Syntax erfordert ein importiertes Hilfsprogramm namens \"{1}\", aber das Modul \"{0}\" enthält keinen exportierten Member \"{1}\".",
   "Trailing_comma_not_allowed_1009": "Ein nachgestelltes Komma ist unzulässig.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "Die Variablendeklarationsliste darf nicht leer sein.",
   "Version_0_6029": "Version {0}",
   "Watch_input_files_6005": "Eingabedateien überwachen.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Gibt an, ob eine veraltete Konsolenausgabe im Überwachungsmodus beibehalten wird, statt den Bildschirm zu löschen.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Sie können keine Elemente umbenennen, die in der TypeScript-Standardbibliothek definiert sind.",
   "You_cannot_rename_this_element_8000": "Sie können dieses Element nicht umbenennen.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "\"{0}\" akzeptiert zu wenige Argumente, um hier als Decorator verwendet zu werden. Wollten Sie es zuerst aufrufen und \"@{0}()\" schreiben?",

lib/enu/diagnosticMessages.generated.json.lcg

@@ -579,30 +579,102 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Add_all_missing_async_modifiers_95041" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add all missing 'async' modifiers]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_all_missing_members_95022" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add all missing members]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_all_missing_super_calls_95039" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add all missing super calls]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Add_async_modifier_to_containing_function_90029" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Add async modifier to containing function]]></Val>
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Add_definite_assignment_assertion_to_property_0_95020" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add definite assignment assertion to property '{0}']]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_definite_assignment_assertions_to_all_uninitialized_properties_95028" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add definite assignment assertions to all uninitialized properties]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Add_index_signature_for_property_0_90017" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Add index signature for property '{0}']]></Val>
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Add_initializer_to_property_0_95019" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add initializer to property '{0}']]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_initializers_to_all_uninitialized_properties_95027" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add initializers to all uninitialized properties]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Add_missing_super_call_90001" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Add missing 'super()' call]]></Val>
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Add_this_to_all_unresolved_variables_matching_a_member_name_95037" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add 'this.' to all unresolved variables matching a member name]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Add_this_to_unresolved_variable_90008" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Add 'this.' to unresolved variable]]></Val>
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Add_to_all_uncalled_decorators_95044" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add '()' to all uncalled decorators]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_ts_ignore_to_all_error_messages_95042" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add '@ts-ignore' to all error messages]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_undefined_type_to_all_uninitialized_properties_95029" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add undefined type to all uninitialized properties]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Add_undefined_type_to_property_0_95018" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Add 'undefined' type to property '{0}']]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.]]></Val>
@@ -639,6 +711,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";All_imports_in_import_declaration_are_unused_6192" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[All imports in import declaration are unused.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Allow default imports from modules with no default export. This does not affect code emit, just typechecking.]]></Val>
@@ -927,6 +1005,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Annotate_everything_with_types_from_JSDoc_95043" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Annotate everything with types from JSDoc]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Annotate_with_type_from_JSDoc_95009" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Annotate with type from JSDoc]]></Val>
@@ -1329,6 +1413,24 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Change_all_extended_interfaces_to_implements_95038" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Change all extended interfaces to 'implements']]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Change_all_jsdoc_style_types_to_TypeScript_95030" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Change all jsdoc-style types to TypeScript]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Change_all_jsdoc_style_types_to_TypeScript_and_add_undefined_to_nullable_types_95031" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Change all jsdoc-style types to TypeScript (and add '| undefined' to nullable types)]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Change_extends_to_implements_90003" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Change 'extends' to 'implements']]></Val>
@@ -1527,6 +1629,18 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Convert_all_constructor_functions_to_classes_95045" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Convert all constructor functions to classes]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Convert_all_to_default_imports_95035" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Convert all to default imports]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Convert_function_0_to_class_95002" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Convert function '{0}' to class]]></Val>
@@ -1635,6 +1749,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Delete_all_unused_declarations_95024" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Delete all unused declarations]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Deprecated_Use_jsxFactory_instead_Specify_the_object_invoked_for_createElement_when_targeting_react__6084" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[[Deprecated]5D; Use '--jsxFactory' instead. Specify the object invoked for createElement when targeting 'react' JSX emit]]></Val>
@@ -2289,6 +2409,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[File is a CommonJS module; it may be converted to an ES6 module.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[File name '{0}' differs from already included file name '{1}' only in casing.]]></Val>
@@ -2313,6 +2439,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Fix_all_detected_spelling_errors_95026" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Fix all detected spelling errors]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Found_package_json_at_0_6099" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Found 'package.json' at '{0}'.]]></Val>
@@ -2385,6 +2517,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Generates_a_sourcemap_for_each_corresponding_d_ts_file_6000" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Generates a sourcemap for each corresponding '.d.ts' file.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Generates_corresponding_d_ts_file_6002" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Generates corresponding '.d.ts' file.]]></Val>
@@ -2511,6 +2649,18 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Implement_all_inherited_abstract_classes_95040" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Implement all inherited abstract classes]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
+            <Item ItemId=";Implement_all_unimplemented_interfaces_95032" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Implement all unimplemented interfaces]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Implement_inherited_abstract_class_90007" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Implement inherited abstract class]]></Val>
@@ -2565,6 +2715,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Import_may_be_converted_to_a_default_import_80003" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Import may be converted to a default import.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Import_name_cannot_be_0_2438" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Import name cannot be '{0}'.]]></Val>
@@ -2625,6 +2781,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Infer_all_types_from_usage_95023" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Infer all types from usage]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Infer_parameter_types_from_usage_95012" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Infer parameter types from usage]]></Val>
@@ -2691,6 +2853,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Install_all_missing_types_packages_95033" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Install all missing types packages]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Interface_0_cannot_simultaneously_extend_types_1_and_2_2320" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Interface '{0}' cannot simultaneously extend types '{1}' and '{2}'.]]></Val>
@@ -2793,6 +2961,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[JSDoc '@param' tag has name '{0}', but there is no parameter with that name. It would match 'arguments' if it had an array type.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[JSDoc '@typedef' tag should either have a type annotation or be followed by '@property' or '@member' tags.]]></Val>
@@ -2805,6 +2979,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";JSDoc_types_may_be_moved_to_TypeScript_types_80004" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[JSDoc types may be moved to TypeScript types.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";JSX_attribute_expected_17003" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[JSX attribute expected.]]></Val>
@@ -2877,6 +3057,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[JSX fragment is not supported when using an inline JSX factory pragma]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";JSX_fragment_is_not_supported_when_using_jsxFactory_17016" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[JSX fragment is not supported when using --jsxFactory]]></Val>
@@ -2985,6 +3171,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Make_all_super_calls_the_first_statement_in_their_constructor_95036" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Make all 'super()' calls the first statement in their constructor]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Make_super_call_the_first_statement_in_the_constructor_90002" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Make 'super()' call the first statement in the constructor]]></Val>
@@ -3063,6 +3255,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Module_0_has_no_exported_member_1_Did_you_mean_2_2724" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Module '{0}' has no exported member '{1}'. Did you mean '{2}'?]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Module '{0}' is hidden by a local declaration with the same name.]]></Val>
@@ -3351,6 +3549,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Option_0_cannot_be_specified_without_specifying_option_1_or_option_2_5069" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Option '{0}' cannot be specified without specifying option '{1}' or option '{2}'.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Option_0_should_have_array_of_strings_as_a_value_6103" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Option '{0}' should have array of strings as a value.]]></Val>
@@ -3615,6 +3819,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Prefix_all_unused_declarations_with_where_possible_95025" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Prefix all unused declarations with '_' where possible]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Print_names_of_files_part_of_the_compilation_6155" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Print names of files part of the compilation.]]></Val>
@@ -3921,6 +4131,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Remove_import_from_0_90005" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Remove import from '{0}']]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Replace_import_with_0_95015" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Replace import with '{0}'.]]></Val>
@@ -3963,9 +4179,9 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
-            <Item ItemId=";Resolution_for_module_0_was_found_in_cache_6147" ItemType="0" PsrId="306" Leaf="true">
+            <Item ItemId=";Resolution_for_module_0_was_found_in_cache_from_location_1_6147" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
-                <Val><![CDATA[Resolution for module '{0}' was found in cache.]]></Val>
+                <Val><![CDATA[Resolution for module '{0}' was found in cache from location '{1}'.]]></Val>
               </Str>
               <Disp Icon="Str" />
             </Item>
@@ -4197,6 +4413,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Rewrite_all_as_indexed_access_types_95034" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Rewrite all as indexed access types]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";Rewrite_as_the_indexed_access_type_0_90026" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[Rewrite as the indexed access type '{0}']]></Val>
@@ -4767,6 +4989,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";This_constructor_function_may_be_converted_to_a_class_declaration_80002" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[This constructor function may be converted to a class declaration.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[This syntax requires an imported helper but module '{0}' cannot be found.]]></Val>
@@ -5343,6 +5571,12 @@
               </Str>
               <Disp Icon="Str" />
             </Item>
+            <Item ItemId=";Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191" ItemType="0" PsrId="306" Leaf="true">
+              <Str Cat="Text">
+                <Val><![CDATA[Whether to keep outdated console output in watch mode instead of clearing the screen.]]></Val>
+              </Str>
+              <Disp Icon="Str" />
+            </Item>
             <Item ItemId=";You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001" ItemType="0" PsrId="306" Leaf="true">
               <Str Cat="Text">
                 <Val><![CDATA[You cannot rename elements that are defined in the standard TypeScript library.]]></Val>

lib/es/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Los descriptores de acceso deben ser los dos abstractos o los dos no abstractos.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Agregar \"{0}\" a una declaración de importación existente desde \"{1}\"",
   "Add_async_modifier_to_containing_function_90029": "Agregar el modificador async a la función contenedora",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Agregar aserción de asignación definitiva a la propiedad \"{0}\"",
   "Add_index_signature_for_property_0_90017": "Agregar una signatura de índice para la propiedad \"{0}\"",
+  "Add_initializer_to_property_0_95019": "Agregar inicializador a la propiedad \"{0}\"",
   "Add_missing_super_call_90001": "Agregar la llamada a \"super()\" que falta",
   "Add_this_to_unresolved_variable_90008": "Agregar \"this.\" a una variable no resuelta",
+  "Add_undefined_type_to_property_0_95018": "Agregar un tipo \"undefined\" a la propiedad \"{0}\"",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Agregar un archivo tsconfig.json ayuda a organizar los proyectos que contienen archivos TypeScript y JavaScript. Más información en https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Comprobaciones adicionales",
   "Advanced_Options_6178": "Opciones avanzadas",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Todas las declaraciones de '{0}' deben tener modificadores idénticos.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Todas las declaraciones de '{0}' deben tener parámetros de tipo idénticos.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Todas las declaraciones de un método abstracto deben ser consecutivas.",
+  "All_imports_in_import_declaration_are_unused_6192": "Todas las importaciones de la declaración de importación están sin utilizar.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Permitir las importaciones predeterminadas de los módulos sin exportación predeterminada. Esto no afecta a la emisión de código, solo a la comprobación de tipos.",
   "Allow_javascript_files_to_be_compiled_6102": "Permitir que se compilen los archivos de JavaScript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "No se permiten enumeraciones const de ambiente cuando se proporciona la marca \"--isolatedModules\".",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Habilita la compatibilidad experimental con los elementos Decorator de ES7.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Habilita la compatibilidad experimental para emitir metadatos de tipo para los elementos Decorator.",
   "Enum_0_used_before_its_declaration_2450": "Se ha usado la enumeración \"{0}\" antes de declararla.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Las declaraciones de enumeración solo se pueden combinar con otras declaraciones de enumeración o de espacio de nombres.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Todas las declaraciones de enumeración deben ser de tipo const o no const.",
   "Enum_member_expected_1132": "Se esperaba un miembro de enumeración.",
   "Enum_member_must_have_initializer_1061": "El miembro de enumeración debe tener un inicializador.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "El archivo '{0}' no está en \"rootDir\" '{1}'. Se espera que \"rootDir\" contenga todos los archivos de origen.",
   "File_0_not_found_6053": "Archivo '{0}' no encontrado.",
   "File_change_detected_Starting_incremental_compilation_6032": "Se detectó un cambio de archivo. Iniciando la compilación incremental...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "El archivo es un módulo CommonJS; se puede convertir a un módulo ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "El nombre de archivo \"{0}\" es diferente del nombre de archivo \"{1}\" ya incluido solo en el uso de mayúsculas y minúsculas.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "El nombre de archivo \"{0}\" tiene una extensión \"{1}\" y se va a quitar.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "La especificación del archivo no puede contener un directorio primario ('..') que aparezca después de un comodín de directorios recursivo ('**'): '{0}'.",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "La declaración de importación está en conflicto con la declaración local de \"{0}\".",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Las declaraciones de importación de un espacio de nombres no pueden hacer referencia a un módulo.",
   "Import_emit_helpers_from_tslib_6139": "Importe elementos auxiliares de emisión de \"tslib\".",
+  "Import_may_be_converted_to_a_default_import_80003": "La importación puede convertirse a una importación predeterminada.",
   "Import_name_cannot_be_0_2438": "El nombre de importación no puede ser \"{0}\".",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "La declaración de importación o exportación de una declaración de módulo de ambiente no puede hacer referencia al módulo a través de su nombre relativo.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "No se permiten importaciones en aumentos de módulos. Considere la posibilidad de moverlas al módulo externo envolvente.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "La etiqueta \"@{0}\" de JSDoc no está asociada a una clase.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "\"...\" de JSDoc solo puede aparecer en el último parámetro de una signatura.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "La etiqueta \"@param\" de JSDoc tiene el nombre \"{0}\", pero no hay ningún parámetro con ese nombre.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "La etiqueta de JSDoc \"@param\" tiene el nombre \"{0}\", pero no hay ningún parámetro con ese nombre. Coincidiría con \"arguments\" si tuviera un tipo de matriz.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "La etiqueta \"@typedef\" de JSDoc debe tener una anotación de tipo o ir seguida de las etiquetas \"@property\" o \"@member\".",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Los tipos JSDoc solo se pueden usar en los comentarios de la documentación.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Los tipos de JSDoc pueden moverse a tipos de TypeScript.",
   "JSX_attribute_expected_17003": "Se esperaba un atributo JSX.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "A los atributos JSX se les debe asignar únicamente un elemento \"expression\" que no esté vacío.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "El elemento JSX '{0}' no tiene la etiqueta de cierre correspondiente.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Los elementos JSX no pueden tener varios atributos con el mismo nombre.",
   "JSX_expressions_must_have_one_parent_element_2657": "Las expresiones JSX deben tener un elemento primario.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "El fragmento de JSX no tiene la etiqueta de cierre correspondiente.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "El fragmento JSX no se admite cuando se usa una pragma de fábrica JSX en línea",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "El fragmento de JSX no es compatible cuando se utiliza --jsxFactory",
   "JSX_spread_child_must_be_an_array_type_2609": "El elemento secundario de propagación JSX debe ser de tipo matriz.",
   "Jump_target_cannot_cross_function_boundary_1107": "Un destino de salto no puede atravesar el límite de función.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "El módulo {0} ya ha exportado un miembro denominado '{1}'. Considere la posibilidad de volver a exportarlo de forma explícita para resolver la ambigüedad.",
   "Module_0_has_no_default_export_1192": "El módulo '{0}' no tiene ninguna exportación predeterminada.",
   "Module_0_has_no_exported_member_1_2305": "El módulo '{0}' no tiene ningún miembro '{1}' exportado.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "El módulo \"{0}\" no tiene ningún miembro exportado \"{1}\". ¿Pretendía utilizar \"{2}\"?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "El módulo \"{0}\" está oculto por una declaración local con el mismo nombre.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "El módulo '{0}' se resuelve en una entidad que no es un módulo y no se puede importar mediante esta construcción.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "El módulo '{0}' usa \"export =\" y no se puede usar con \"export *\".",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Generar un error en expresiones 'this' con un tipo 'any' implícito.",
   "Redirect_output_structure_to_the_directory_6006": "Redirija la estructura de salida al directorio.",
   "Remove_declaration_for_Colon_0_90004": "Quitar declaración de: \"{0}\"",
+  "Remove_import_from_0_90005": "Quitar importación de \"{0}\"",
   "Replace_import_with_0_95015": "Reemplazar importación por \"{0}\".",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Notificar un error cuando no todas las rutas de acceso de código en funcionamiento devuelven un valor.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Notificar errores de los casos de fallthrough en la instrucción switch.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Informe de errores sobre variables locales no usadas.",
   "Report_errors_on_unused_parameters_6135": "Informe de errores sobre parámetros no usados.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Los parámetros de tipo requeridos pueden no seguir parámetros de tipo opcionales.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "La resolución del módulo \"{0}\" se encontró en la memoria caché.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "La resolución del módulo \"{0}\" se encontró en la memoria caché de la ubicación \"{1}\".",
   "Resolving_from_node_modules_folder_6118": "Resolviendo desde la carpeta node_modules...",
   "Resolving_module_0_from_1_6086": "======== Resolviendo el módulo '{0}' de '{1}'. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Resolviendo el nombre de módulo '{0}' relativo a la dirección URL base '{1}' - '{2}'.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "La declaración de variable de una instrucción \"for...in\" no puede tener un inicializador.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "La declaración de variable de una instrucción \"for...of\" no puede tener un inicializador.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "No se admite la instrucción 'with'. Todos los símbolos de un bloque 'with' tendrán el tipo 'any'.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Esta función de constructor puede convertirse en una declaración de clase.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Esta sintaxis requiere una aplicación auxiliar importada, pero no se puede encontrar el módulo \"{0}\".",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Esta sintaxis requiere una aplicación auxiliar importada denominada \"{1}\", pero el módulo \"{0}\" no tiene el miembro exportado \"{1}\".",
   "Trailing_comma_not_allowed_1009": "No se permite la coma final.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "La lista de declaraciones de variable no puede estar vacía.",
   "Version_0_6029": "Versión {0}",
   "Watch_input_files_6005": "Inspeccionar archivos de entrada.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Si se debe mantener la salida de la consola no actualizada en el modo de inspección en lugar de borrar la pantalla.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "No se puede cambiar el nombre de elementos definidos en la biblioteca TypeScript estándar.",
   "You_cannot_rename_this_element_8000": "No se puede cambiar el nombre a este elemento.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "\"{0}\" no acepta suficientes argumentos para utilizarse como decorador aquí. ¿Pretendía llamar primero y escribir \"@{0}()\"?",

lib/fr/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Les accesseurs doivent être abstraits ou non abstraits.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Ajouter '{0}' à la déclaration d'importation existante de \"{1}\"",
   "Add_async_modifier_to_containing_function_90029": "Ajouter le modificateur async dans la fonction conteneur",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Ajouter une assertion d'assignation définie à la propriété '{0}'",
   "Add_index_signature_for_property_0_90017": "Ajouter une signature d'index pour la propriété '{0}'",
+  "Add_initializer_to_property_0_95019": "Ajouter un initialiseur à la propriété '{0}'",
   "Add_missing_super_call_90001": "Ajouter l'appel manquant à 'super()'",
   "Add_this_to_unresolved_variable_90008": "Ajouter 'this.' à la variable non résolue",
+  "Add_undefined_type_to_property_0_95018": "Ajouter un type 'undefined' à la propriété '{0}'",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "L'ajout d'un fichier tsconfig.json permet d'organiser les projets qui contiennent des fichiers TypeScript et JavaScript. En savoir plus sur https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Vérifications supplémentaires",
   "Advanced_Options_6178": "Options avancées",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Toutes les déclarations de '{0}' doivent avoir des modificateurs identiques.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Toutes les déclarations de '{0}' doivent avoir des paramètres de type identiques.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Toutes les déclarations d'une méthode abstraite doivent être consécutives.",
+  "All_imports_in_import_declaration_are_unused_6192": "Les importations de la déclaration d'importation ne sont pas toutes utilisées.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Autorisez les importations par défaut à partir des modules sans exportation par défaut. Cela n'affecte pas l'émission du code, juste le contrôle de type.",
   "Allow_javascript_files_to_be_compiled_6102": "Autorisez la compilation des fichiers JavaScript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "Les enums const ambiants ne sont pas autorisés quand l'indicateur '--isolatedModules' est fourni.",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Active la prise en charge expérimentale des éléments décoratifs ES7.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Active la prise en charge expérimentale pour l'émission des métadonnées de type pour les éléments décoratifs.",
   "Enum_0_used_before_its_declaration_2450": "Enum '{0}' utilisé avant sa déclaration.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Les déclarations enum ne peuvent fusionner qu'avec des espaces de noms ou d'autres déclarations enum.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Les déclarations d'enum doivent toutes être const ou non const.",
   "Enum_member_expected_1132": "Membre enum attendu.",
   "Enum_member_must_have_initializer_1061": "Un membre enum doit posséder un initialiseur.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Le fichier '{0}' ne se trouve pas sous 'rootDir' '{1}'. 'rootDir' est supposé contenir tous les fichiers sources.",
   "File_0_not_found_6053": "Fichier '{0}' introuvable.",
   "File_change_detected_Starting_incremental_compilation_6032": "Modification de fichier détectée. Démarrage de la compilation incrémentielle...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Le fichier est un module CommonJS ; il peut être converti en module ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Le nom de fichier '{0}' diffère du nom de fichier '{1}' déjà inclus uniquement par la casse.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "Le nom de fichier '{0}' a une extension '{1}'. Suppression de l'extension.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "La spécification de fichier ne peut pas contenir un répertoire parent ('..') après un caractère générique de répertoire récursif ('**') : '{0}'.",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "La déclaration d'importation est en conflit avec la déclaration locale de '{0}'.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Les déclarations d'importation dans un espace de noms ne peuvent pas référencer un module.",
   "Import_emit_helpers_from_tslib_6139": "Importer l'assistance à l'émission à partir de 'tslib'.",
+  "Import_may_be_converted_to_a_default_import_80003": "L'importation peut être convertie en importation par défaut.",
   "Import_name_cannot_be_0_2438": "Le nom d'importation ne peut pas être '{0}'.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Une déclaration d'importation ou d'exportation dans une déclaration de module ambiant ne peut référencer un module au moyen d'un nom de module relatif.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Les importations ne sont pas autorisées dans les augmentations de module. Déplacez-les vers le module externe englobant.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "La balise JSDoc '@{0}' n'est pas attachée à une classe.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' peut apparaître uniquement dans le dernier paramètre d'une signature.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "La balise JSDoc '@param' se nomme '{0}', mais il n'existe aucun paramètre portant ce nom.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "La balise JSDoc '@param' se nomme '{0}', mais il n'existe aucun paramètre portant ce nom. Elle doit correspondre à 'arguments', si elle est de type tableau.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "La balise JSDoc '@typedef' doit avoir une annotation de type ou être suivie des balises '@property' ou '@member'.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Les types JSDoc peuvent uniquement être utilisés dans les commentaires de la documentation.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Les types JSDoc peuvent être déplacés vers les types TypeScript.",
   "JSX_attribute_expected_17003": "Attribut JSX attendu.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Les attributs JSX doivent uniquement être attribués à une 'expression' non vide.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "L'élément JSX '{0}' n'a pas de balise de fermeture correspondante.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Les éléments JSX ne peuvent pas avoir plusieurs attributs du même nom.",
   "JSX_expressions_must_have_one_parent_element_2657": "Les expressions JSX doivent avoir un élément parent.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Le fragment JSX n'a pas de balise de fermeture correspondante.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Le fragment JSX n'est pas pris en charge quand vous utilisez un pragma de fabrique JSX inline",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "Le fragment JSX n'est pas pris en charge quand --jsxFactory est utilisé",
   "JSX_spread_child_must_be_an_array_type_2609": "L'enfant spread JSX doit être un type de tableau.",
   "Jump_target_cannot_cross_function_boundary_1107": "La cible du saut ne peut pas traverser une limite de fonction.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Le module {0} a déjà exporté un membre nommé '{1}'. Effectuez une réexportation explicite pour lever l'ambiguïté.",
   "Module_0_has_no_default_export_1192": "Le module '{0}' n'a pas d'exportation par défaut.",
   "Module_0_has_no_exported_member_1_2305": "Le module '{0}' n'a aucun membre exporté '{1}'.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "Le module '{0}' n'a aucun membre exporté '{1}'. Pensiez-vous plutôt à '{2}' ?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Le module '{0}' est masqué par une déclaration locale portant le même nom.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Le module '{0}' se résout en une entité non-module et ne peut pas être importé à l'aide de cette construction.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Le module '{0}' utilise 'export =' et ne peut pas être utilisé avec 'export *'.",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Déclenche une erreur sur les expressions 'this' avec un type 'any' implicite.",
   "Redirect_output_structure_to_the_directory_6006": "Rediriger la structure de sortie vers le répertoire.",
   "Remove_declaration_for_Colon_0_90004": "Supprimer la déclaration pour : '{0}'",
+  "Remove_import_from_0_90005": "Supprimer l'importation de '{0}'",
   "Replace_import_with_0_95015": "Remplacez l'importation par '{0}'.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Signalez une erreur quand les chemins de code de la fonction ne retournent pas tous une valeur.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Signalez les erreurs pour les case avec fallthrough dans une instruction switch.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Signaler les erreurs sur les variables locales inutilisées.",
   "Report_errors_on_unused_parameters_6135": "Signaler les erreurs sur les paramètres inutilisés.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Les paramètres de type obligatoires ne peuvent pas être placés à la suite des paramètres de type optionnels.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "La résolution du module '{0}' a été trouvée dans le cache.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "La résolution du module '{0}' a été trouvée dans le cache à l'emplacement '{1}'.",
   "Resolving_from_node_modules_folder_6118": "Résolution à partir du dossier node_modules...",
   "Resolving_module_0_from_1_6086": "======== Résolution du module '{0}' à partir de '{1}'. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Résolution du nom de module '{0}' par rapport à l'URL de base '{1}' - '{2}'.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "La déclaration de variable d'une instruction 'for...in' ne peut pas avoir d'initialiseur.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "La déclaration de variable d'une instruction 'for...of' ne peut pas avoir d'initialiseur.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "L'instruction 'with' n'est pas prise en charge. Tous les symboles d'un bloc 'with' ont le type 'any'.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Cette fonction constructeur peut être convertie en déclaration de classe.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Cette syntaxe nécessite une application d'assistance importée, mais le module '{0}' est introuvable.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Cette syntaxe nécessite une application d'assistance importée nommée '{1}', mais le module '{0}' ne compte aucun membre exporté '{1}'.",
   "Trailing_comma_not_allowed_1009": "Virgule de fin non autorisée.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "La liste des déclarations de variable ne peut pas être vide.",
   "Version_0_6029": "Version {0}",
   "Watch_input_files_6005": "Fichiers d'entrée d'espion.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Garder la sortie de console obsolète en mode espion au lieu d'effacer l'écran.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Vous ne pouvez pas renommer des éléments définis dans la bibliothèque TypeScript standard.",
   "You_cannot_rename_this_element_8000": "Vous ne pouvez pas renommer cet élément.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' accepte trop peu d'arguments pour pouvoir être utilisé ici en tant qu'élément décoratif. Voulez-vous vraiment l'appeler d'abord et écrire '@{0}()' ?",

lib/it/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Le funzioni di accesso devono essere tutte astratte o tutte non astratte.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Aggiungere '{0}' alla dichiarazione di importazione esistente da \"{1}\"",
   "Add_async_modifier_to_containing_function_90029": "Aggiungere il modificatore async alla funzione contenitore",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Aggiungere l'asserzione di assegnazione definita alla proprietà '{0}'",
   "Add_index_signature_for_property_0_90017": "Aggiungere la firma dell'indice per la proprietà '{0}'",
+  "Add_initializer_to_property_0_95019": "Aggiungere l'inizializzatore alla proprietà '{0}'",
   "Add_missing_super_call_90001": "Aggiungere la chiamata mancante a 'super()'",
   "Add_this_to_unresolved_variable_90008": "Aggiungere 'this.' alla variabile non risolta",
+  "Add_undefined_type_to_property_0_95018": "Aggiungere il tipo 'undefined' alla proprietà '{0}'",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Aggiungere un file tsconfig.json per organizzare più facilmente progetti che contengono sia file TypeScript che JavaScript. Per altre informazioni, vedere https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Controlli aggiuntivi",
   "Advanced_Options_6178": "Opzioni avanzate",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Tutte le dichiarazioni di '{0}' devono contenere modificatori identici.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Tutte le dichiarazioni di '{0}' devono contenere parametri di tipo identici.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Tutte le dichiarazioni di un metodo astratto devono essere consecutive.",
+  "All_imports_in_import_declaration_are_unused_6192": "Tutte le importazioni nella dichiarazione di importazione sono inutilizzate.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Consente di eseguire importazioni predefinite da moduli senza esportazione predefinita. Non influisce sulla creazione del codice ma solo sul controllo dei tipi.",
   "Allow_javascript_files_to_be_compiled_6102": "Consente la compilazione di file JavaScript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "Le enumerazioni const di ambiente non sono consentite quando viene specificato il flag '--isolatedModules'.",
@@ -379,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Il file '{0}' non si trova in 'rootDir' '{1}'. 'rootDir' deve contenere tutti i file di origine.",
   "File_0_not_found_6053": "Il file '{0}' non è stato trovato.",
   "File_change_detected_Starting_incremental_compilation_6032": "È stata rilevata una modifica ai file. Verrà avviata la compilazione incrementale...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Il file è un modulo CommonJS; può essere convertito in un modulo ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Il nome file '{0}' differisce da quello già incluso '{1}' solo per l'uso di maiuscole/minuscole.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "L'estensione del nome file '{0}' è '{1}' e verrà rimossa.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "La specifica del file non può contenere una directory padre ('..') inserita dopo un carattere jolly ('**') di directory ricorsiva: '{0}'.",
@@ -425,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "La dichiarazione di importazione è in conflitto con la dichiarazione locale di '{0}'.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Le dichiarazioni di importazione in uno spazio dei nomi non possono far riferimento a un modulo.",
   "Import_emit_helpers_from_tslib_6139": "Importa gli helper di creazione da 'tslib'.",
+  "Import_may_be_converted_to_a_default_import_80003": "L'importazione può essere convertita in un'importazione predefinita.",
   "Import_name_cannot_be_0_2438": "Il nome dell'importazione non può essere '{0}'.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "La dichiarazione di importazione o esportazione in una dichiarazione di modulo di ambiente non può fare riferimento al modulo tramite il nome di modulo relativo.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Le importazioni non sono consentite negli aumenti di modulo. Provare a spostarle nel modulo esterno di inclusione.",
@@ -463,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "Il tag '@{0}' di JSDoc non è collegato a una classe.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' può essere presente solo nell'ultimo parametro di una firma.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "Il nome del tag '@param' di JSDoc è '{0}', ma non esiste alcun parametro con questo nome.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "Il nome del tag '@param' di JSDoc è '{0}', ma non esiste alcun parametro con questo nome. Se contenesse un tipo matrice, corrisponderebbe ad 'arguments'.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "Il tag '@typedef' di JSDoc deve contenere un'annotazione di tipo o essere seguito dal tag '@property' o '@member'.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "I tipi JSDoc possono essere usati solo nei commenti della documentazione.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "I tipi JSDoc possono essere convertiti in tipi TypeScript.",
   "JSX_attribute_expected_17003": "È previsto l'attributo JSX.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Agli attributi JSX deve essere assegnato solo un elemento 'expression' non vuoto.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "Per l'elemento JSX '{0}' non esiste alcun tag di chiusura corrispondente.",
@@ -477,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Gli elementi JSX non possono contenere più attributi con lo stesso nome.",
   "JSX_expressions_must_have_one_parent_element_2657": "Le espressioni JSX devono contenere un solo elemento padre.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Per il frammento JSX non esiste alcun tag di chiusura corrispondente.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Il frammento JSX non è supportato quando si usa una direttiva pragma factory JSX inline",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "Il frammento JSX non è supportato quando si usa --jsxFactory",
   "JSX_spread_child_must_be_an_array_type_2609": "L'elemento figlio dell'attributo spread JSX deve essere un tipo di matrice.",
   "Jump_target_cannot_cross_function_boundary_1107": "La destinazione di collegamento non può oltrepassare il limite della funzione.",
@@ -508,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Il modulo {0} ha già esportato un membro denominato '{1}'. Per risolvere l'ambiguità, provare a esportarlo di nuovo in modo esplicito.",
   "Module_0_has_no_default_export_1192": "Per il modulo '{0}' non esistono esportazioni predefinite.",
   "Module_0_has_no_exported_member_1_2305": "Il modulo '{0}' non contiene un membro esportato '{1}'.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "Per il modulo '{0}' non esiste alcun membro esportato '{1}'. Si intendeva '{2}'?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Il modulo '{0}' è nascosto da una dichiarazione locale con lo stesso nome.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Il modulo '{0}' viene risolto in un'entità non modulo e non può essere importato con questo costrutto.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Il modulo '{0}' usa 'export =' e non può essere usato con 'export *'.",
@@ -651,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Genera un errore in caso di espressioni 'this con un tipo 'any' implicito.",
   "Redirect_output_structure_to_the_directory_6006": "Reindirizza la struttura di output alla directory.",
   "Remove_declaration_for_Colon_0_90004": "Rimuovere la dichiarazione per '{0}'",
+  "Remove_import_from_0_90005": "Rimuovere l'importazione da '{0}'",
   "Replace_import_with_0_95015": "Sostituire l'importazione con '{0}'.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Segnala l'errore quando non tutti i percorsi del codice nella funzione restituiscono un valore.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Segnala errori per i casi di fallthrough nell'istruzione switch.",
@@ -658,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Segnala errori relativi a variabili locali non usate.",
   "Report_errors_on_unused_parameters_6135": "Segnala errori relativi a parametri non usati.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "I parametri di tipo obbligatori potrebbero non seguire i parametri di tipo facoltativi.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "La risoluzione per il modulo '{0}' non è stata trovata nella cache.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "La risoluzione per il modulo '{0}' è stata trovata nella cache dal percorso '{1}'.",
   "Resolving_from_node_modules_folder_6118": "Risoluzione dalla cartella node_modules...",
   "Resolving_module_0_from_1_6086": "======== Risoluzione del modulo '{0}' da '{1}'. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Verrà eseguita la risoluzione del nome del modulo '{0}' relativo all'URL di base '{1}' - '{2}'.",
@@ -792,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "La dichiarazione di variabile di un'istruzione 'for...in' non può contenere un inizializzatore.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "La dichiarazione di variabile di un'istruzione 'for...of' non può contenere un inizializzatore.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "L'istruzione 'with' non è supportata. Il tipo di tutti i simboli in un blocco 'with' è 'any'.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Questa funzione del costruttore può essere convertita in una dichiarazione di classe.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Con questa sintassi è richiesto un helper importato, ma il modulo '{0}' non è stato trovato.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Con questa sintassi è richiesto un helper importato denominato '{1}', ma il modulo '{0}' non contiene alcun membro esportato '{1}'.",
   "Trailing_comma_not_allowed_1009": "La virgola finale non è consentita.",
@@ -888,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "L'elenco delle dichiarazioni di variabile non può essere vuoto.",
   "Version_0_6029": "Versione {0}",
   "Watch_input_files_6005": "Controlla i file di input.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Indica se mantenere l'output della console obsoleto in modalità espressione di controllo invece di pulire lo schermo.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Non è possibile rinominare elementi definiti nella libreria TypeScript standard.",
   "You_cannot_rename_this_element_8000": "Non è possibile rinominare questo elemento.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' accetta un numero troppo ridotto di argomenti da usare come espressione Decorator in questo punto. Si intendeva chiamarlo prima e scrivere '@{0}()'?",

lib/ja/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "アクセサーはどちらも抽象または非抽象である必要があります。",
   "Add_0_to_existing_import_declaration_from_1_90015": "\"{1}\" から既存のインポート宣言に '{0}' を追加する",
   "Add_async_modifier_to_containing_function_90029": "含まれている関数に async 修飾子を追加します",
+  "Add_definite_assignment_assertion_to_property_0_95020": "プロパティ '{0}' に限定代入アサーションを追加します",
   "Add_index_signature_for_property_0_90017": "プロパティ '{0}' のインデックス シグネチャを追加する",
+  "Add_initializer_to_property_0_95019": "プロパティ '{0}' に初期化子を追加します",
   "Add_missing_super_call_90001": "欠落している 'super()' 呼び出しを追加する",
   "Add_this_to_unresolved_variable_90008": "'this.' を未解決の変数に追加する",
+  "Add_undefined_type_to_property_0_95018": "プロパティ '{0}' に '未定義' の型を追加します",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "tsconfig.json ファイルを追加すると、TypeScript ファイルと JavaScript ファイルの両方を含むプロジェクトを整理できます。詳細については、https://aka.ms/tsconfig をご覧ください。",
   "Additional_Checks_6176": "追加のチェック",
   "Advanced_Options_6178": "詳細オプション",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "'{0}' のすべての宣言には、同一の修飾子が必要です。",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "'{0}' のすべての宣言には、同一の型パラメーターがある必要があります。",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "抽象メソッドの宣言はすべて連続している必要があります。",
+  "All_imports_in_import_declaration_are_unused_6192": "インポート宣言内のインポートはすべて未使用です。",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "既定のエクスポートがないモジュールからの既定のインポートを許可します。これは、型チェックのみのため、コード生成には影響を与えません。",
   "Allow_javascript_files_to_be_compiled_6102": "javascript ファイルのコンパイルを許可します。",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "'--isolatedModules' フラグが指定されている場合、アンビエント const 列挙型は使用できません。",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "ES7 デコレーター用の実験的なサポートを有効にします。",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "デコレーター用の型メタデータを発行するための実験的なサポートを有効にします。",
   "Enum_0_used_before_its_declaration_2450": "列挙型 '{0}' は宣言の前に使用されました。",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "列挙型の宣言は、名前空間または他の列挙型の宣言とのみマージできます。",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "列挙型宣言は、すべてが定数、またはすべてが非定数でなければなりません。",
   "Enum_member_expected_1132": "列挙型メンバーが必要です。",
   "Enum_member_must_have_initializer_1061": "列挙型メンバーには初期化子が必要です。",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "ファイル '{0}' が 'rootDir' '{1}' の下にありません。'rootDir' にすべてにソース ファイルが含まれている必要があります。",
   "File_0_not_found_6053": "ファイル '{0}' が見つかりません。",
   "File_change_detected_Starting_incremental_compilation_6032": "ファイルの変更が検出されました。インクリメンタル コンパイルを開始しています...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "ファイルは CommonJS モジュールです。ES6 モジュールに変換される可能性があります。",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "ファイル名 '{0}' は、既に含まれているファイル名 '{1}' と大文字と小文字の指定だけが異なります。",
   "File_name_0_has_a_1_extension_stripping_it_6132": "ファイル名 '{0}' に '{1}' 拡張子が使われています - 削除しています。",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "ファイルの指定で再帰ディレクトリのワイルドカード ('**') の後に親ディレクトリ ('..') を指定することはできません: '{0}'。",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "インポート宣言が、'{0}' のローカル宣言と競合しています。",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "名前空間内のインポート宣言は、モジュールを参照できません。",
   "Import_emit_helpers_from_tslib_6139": "生成ヘルパーを 'tslib' からインポートします。",
+  "Import_may_be_converted_to_a_default_import_80003": "インポートは既定のインポートに変換される可能性があります。",
   "Import_name_cannot_be_0_2438": "インポート名を '{0}' にすることはできません。",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "アンビエント モジュール宣言内のインポート宣言またはエクスポート宣言は、相対モジュール名を通してモジュールを参照することはできません。",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "インポートはモジュールの拡張では許可されていません。外側の外部モジュールに移動することを検討してください。",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc '@{0}' はクラスにアタッチされていません。",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' は、シグネチャの最後のパラメーターにのみ使用できます。",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "JSDoc '@param' タグの名前は '{0}' ですが、その名前のパラメーターはありません。",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "JSDoc '@param' タグに名前 '{0}' が指定されていますが、その名前のパラメーターはありません。配列型があった場合は、'arguments' と一致したはずです。",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "JSDoc '@typedef' タグには、型の注釈を指定するか、後に '@property' タグや '@member' タグを付ける必要があります。",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc の種類は、ドキュメント コメント内でのみ使用できます。",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc の種類は TypeScript の種類に移行される可能性があります。",
   "JSX_attribute_expected_17003": "JSX 属性が必要です。",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "JSX 属性は、空ではない '式' にのみ割り当てる必要があります。",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "JSX 要素 '{0}' には対応する終了タグがありません。",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX 要素に同じ名前の複数の属性を指定することはできません。",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX 式には 1 つの親要素が必要です。",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "JSX フラグメントには対応する終了タグがありません。",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "JSX フラグメントはインライン JSX ファクトリ プラグマの使用時にサポートされていません",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "--jsxFactory を使う場合、JSX フラグメントはサポートされません",
   "JSX_spread_child_must_be_an_array_type_2609": "JSX スプレッドの子は、配列型でなければなりません。",
   "Jump_target_cannot_cross_function_boundary_1107": "ジャンプ先は関数の境界を越えることはできません。",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "モジュール {0} は既に '{1}' という名前のメンバーをエクスポートしています。あいまいさを解決するため、明示的にもう一度エクスポートすることを検討してください。",
   "Module_0_has_no_default_export_1192": "モジュール '{0}' に既定エクスポートがありません。",
   "Module_0_has_no_exported_member_1_2305": "モジュール '{0}' にエクスポートされたメンバー '{1}' がありません。",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "モジュール '{0}' にエクスポートされたメンバー '{1}' が含まれていません。候補: '{2}'",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "モジュール '{0}' は同じ名前のローカル宣言によって非表示になっています。",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "モジュール '{0}' はモジュール以外のエンティティに解決されるため、このコンストラクトを使用してインポートできません。",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "モジュール '{0}' には 'export =' が使用されているため、'export *' は併用できません。",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "暗黙的な 'any' 型を持つ 'this' 式でエラーが発生します。",
   "Redirect_output_structure_to_the_directory_6006": "ディレクトリへ出力構造をリダイレクトします。",
   "Remove_declaration_for_Colon_0_90004": "次に対する宣言を削除する: '{0}'",
+  "Remove_import_from_0_90005": "'{0}' からのインポートを削除",
   "Replace_import_with_0_95015": "インポートを '{0}' に置換します。",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "関数の一部のコード パスが値を返さない場合にエラーを報告します。",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "switch ステートメントに case のフォールスルーがある場合にエラーを報告します。",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "使用されていないローカルに関するエラーを報告します。",
   "Report_errors_on_unused_parameters_6135": "使用されていないパラメーターに関するエラーを報告します。",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "必須の型パラメーターの後に、オプションの型パラメーターを続けることはできません。",
-  "Resolution_for_module_0_was_found_in_cache_6147": "モジュール '{0}' の解決がキャッシュに見つかりました。",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "モジュール '{0}' の解決が場所 '{1}' のキャッシュに見つかりました。",
   "Resolving_from_node_modules_folder_6118": "node_modules フォルダーから解決しています...",
   "Resolving_module_0_from_1_6086": "======== '{1}' からモジュール '{0}' を解決しています。========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "ベース URL '{1}' - '{2}' に相対するモジュール名 '{0}' を解決しています。",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "'for...in' ステートメントの変数宣言に初期化子を指定することはできません。",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "'for...of' ステートメントの変数宣言に初期化子を指定することはできません。",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "'with' ステートメントはサポートされていません。'with' ブロック内のすべてのシンボルの型は 'any' になります。",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "このコンストラクター関数はクラス宣言に変換される可能性があります。",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "この構文にはインポートされたヘルパーが必要ですが、モジュール '{0}' が見つかりません。",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "この構文には '{1}' という名前のインポートされたヘルパーが必要ですが、モジュール '{0}' にエクスポートされたメンバー '{1}' がありません。",
   "Trailing_comma_not_allowed_1009": "末尾にコンマは使用できません。",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "変数宣言リストを空にすることはできません。",
   "Version_0_6029": "バージョン {0}",
   "Watch_input_files_6005": "入力ファイルを監視します。",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "画面をクリアする代わりに、古くなったコンソール出力をウォッチ モードで保持するかどうか。",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "標準の TypeScript ライブラリで定義された要素の名前を変更することはできません。",
   "You_cannot_rename_this_element_8000": "この要素の名前を変更することはできません。",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' は受け入れる引数が少なすぎるので、ここでデコレーターとして使用することができません。最初にこれを呼び出してから、'@{0}()' を書き込むつもりでしたか?",

lib/ko/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "접근자는 모두 추상이거나 비추상이어야 합니다.",
   "Add_0_to_existing_import_declaration_from_1_90015": "\"{1}\"에서 기존 가져오기 선언에 '{0}' 추가",
   "Add_async_modifier_to_containing_function_90029": "포함된 함수에 async 한정자 추가",
+  "Add_definite_assignment_assertion_to_property_0_95020": "'{0}' 속성에 한정된 할당 어설션 추가",
   "Add_index_signature_for_property_0_90017": "'{0}' 속성에 대해 인덱스 시그니처 추가",
+  "Add_initializer_to_property_0_95019": "'{0}' 속성에 이니셜라이저 추가",
   "Add_missing_super_call_90001": "누락된 'super()' 호출 추가",
   "Add_this_to_unresolved_variable_90008": "확인되지 않은 변수에 'this.' 추가",
+  "Add_undefined_type_to_property_0_95018": "'{0}' 속성에 '정의되지 않은' 형식 추가",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "tsconfig.json 파일을 추가하면 TypeScript 파일과 JavaScript 파일이 둘 다 포함된 프로젝트를 정리하는 데 도움이 됩니다. 자세한 내용은 https://aka.ms/tsconfig를 참조하세요.",
   "Additional_Checks_6176": "추가 검사",
   "Advanced_Options_6178": "고급 옵션",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "'{0}'의 모든 선언에는 동일한 한정자가 있어야 합니다.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "'{0}'의 모든 선언에는 동일한 형식 매개 변수가 있어야 합니다.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "추상 메서드의 모든 선언은 연속적이어야 합니다.",
+  "All_imports_in_import_declaration_are_unused_6192": "가져오기 선언의 모든 가져오기가 사용되지 않습니다.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "기본 내보내기가 없는 모듈에서 기본 가져오기를 허용합니다. 여기서는 코드 내보내기에는 영향을 주지 않고 형식 검사만 합니다.",
   "Allow_javascript_files_to_be_compiled_6102": "Javascript 파일을 컴파일하도록 허용합니다.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "'--isolatedModules' 플래그가 제공된 경우 앰비언트 const 열거형이 허용되지 않습니다.",
@@ -379,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "'{0}' 파일이 'rootDir' '{1}' 아래에 있지 않습니다. 'rootDir'에는 모든 소스 파일이 포함되어 있어야 합니다.",
   "File_0_not_found_6053": "파일 '{0}'을(를) 찾을 수 없습니다.",
   "File_change_detected_Starting_incremental_compilation_6032": "파일 변경이 검색되었습니다. 증분 컴파일을 시작하는 중...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "파일이 CommonJS 모듈입니다. ES6 모듈로 변환될 수 있습니다.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "'{0}' 파일 이름은 이미 포함된 '{1}' 파일 이름과 대/소문자만 다릅니다.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "파일 이름 '{0}'에 '{1}' 확장명이 있어 제거하는 중입니다.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "파일 사양은 재귀 디렉터리 와일드카드('**') 뒤에 나타나는 부모 디렉터리('..')를 포함할 수 없습니다. '{0}'.",
@@ -425,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "가져오기 선언이 '{0}'의 로컬 선언과 충돌합니다.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "네임스페이스의 가져오기 선언은 모듈을 참조할 수 없습니다.",
   "Import_emit_helpers_from_tslib_6139": "'tslib'에서 내보내기 도우미를 가져오세요.",
+  "Import_may_be_converted_to_a_default_import_80003": "가져오기가 기본 가져오기로 변환될 수 있습니다.",
   "Import_name_cannot_be_0_2438": "가져오기 이름은 '{0}'일 수 없습니다.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "앰비언트 모듈 선언의 가져오기 또는 내보내기 선언은 상대적 모듈 이름을 통해 모듈을 참조할 수 없습니다.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "가져오기는 모듈 확대에서 허용되지 않습니다. 내보내기를 바깥쪽 외부 모듈로 이동하세요.",
@@ -463,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc '@{0}'이(가) 클래스에 연결되어 있지 않습니다.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...'은 시그니처의 마지막 매개 변수에만 나타날 수 있습니다.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "JSDoc '@param' 태그의 이름이 '{0}'인데 해당 이름의 매개 변수가 없습니다.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "JSDoc '@param' 태그에 '{0}' 이름이 있지만, 해당 이름의 매개 변수가 없습니다. 배열 형식이 있는 경우 '인수'를 일치시킵니다.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "JSDoc '@typedef' 태그는 형식 주석을 포함하거나, '@property' 또는 '@member' 태그 앞에 와야 합니다.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc 유형은 문서 주석 내에서만 사용될 수 있습니다.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc 형식이 TypeScript 형식으로 이동될 수 있습니다.",
   "JSX_attribute_expected_17003": "JSX 특성이 필요합니다.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "JSX 특성에는 비어 있지 않은 '식'만 할당할 수 있습니다.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "JSX 요소 '{0}'에 닫는 태그가 없습니다.",
@@ -477,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX 요소에 이름이 같은 특성을 여러 개 사용할 수 없습니다.",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX 식에는 부모 요소가 하나 있어야 합니다.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "JSX 조각에 닫는 태그가 없습니다.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "인라인 JSX 팩터리 pragma를 사용할 때에는 JSX 조각이 지원되지 않습니다.",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "JSX 조각은 --jsxFactory를 사용하는 경우 지원되지 않습니다.",
   "JSX_spread_child_must_be_an_array_type_2609": "JSX 분배 자식은 배열 형식이어야 합니다.",
   "Jump_target_cannot_cross_function_boundary_1107": "점프 대상은 함수 경계를 벗어날 수 없습니다.",
@@ -508,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "{0} 모듈에서 '{1}'(이)라는 멤버를 이미 내보냈습니다. 모호성을 해결하려면 명시적으로 다시 내보내는 것이 좋습니다.",
   "Module_0_has_no_default_export_1192": "모듈 '{0}'에는 기본 내보내기가 없습니다.",
   "Module_0_has_no_exported_member_1_2305": "'{0}' 모듈에 내보낸 멤버 '{1}'이(가) 없습니다.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "모듈 '{0}'에 내보낸 멤버 '{1}'이(가) 없습니다. '{2}'이(가) 아닌지 확인하세요.",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "'{0}' 모듈은 이름이 같은 로컬 선언으로 숨겨집니다.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "모듈 '{0}'은(는) 모듈이 아닌 엔터티로 확인되므로 이 구문을 사용하여 가져올 수 없습니다.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "모듈 '{0}'은(는) 'export ='을 사용하며 'export *'와 함께 사용할 수 없습니다.",
@@ -651,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "암시된 'any' 형식이 있는 'this' 식에서 오류를 발생합니다.",
   "Redirect_output_structure_to_the_directory_6006": "출력 구조를 디렉터리로 리디렉션합니다.",
   "Remove_declaration_for_Colon_0_90004": "'{0}'에 대한 선언 제거",
+  "Remove_import_from_0_90005": "'{0}'에서 가져오기 제거",
   "Replace_import_with_0_95015": "가져오기를 '{0}'(으)로 바꿉니다.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "함수의 일부 코드 경로가 값을 반환하지 않는 경우 오류를 보고합니다.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "switch 문의 fallthrough case에 대한 오류를 보고합니다.",
@@ -658,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "사용되지 않은 로컬 항목에 대한 오류를 보고합니다.",
   "Report_errors_on_unused_parameters_6135": "사용되지 않은 매개 변수에 대한 오류를 보고합니다.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "필수 형식 매개 변수는 선택적 형식 매개 변수 다음에 올 수 없습니다.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "'{0}' 모듈에 대한 해결을 캐시에서 찾았습니다.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "'{0}' 모듈에 대한 해결을 '{1}' 위치의 캐시에서 찾았습니다.",
   "Resolving_from_node_modules_folder_6118": "node_modules 폴더에서 확인하는 중...",
   "Resolving_module_0_from_1_6086": "======== '{1}'에서 '{0}' 모듈을 확인하는 중입니다. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "기본 URL '{1}' - '{2}'을(를) 기준으로 모듈 이름 '{0}'을(를) 확인하는 중입니다.",
@@ -792,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "'for...in' 문의 변수 선언에 이니셜라이저가 포함될 수 없습니다.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "'for...of' 문의 변수 선언에 이니셜라이저가 포함될 수 없습니다.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "'with' 문은 지원되지 않습니다. 'with' 블록의 모든 기호가 'any' 형식이 됩니다.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "이 생성자 함수는 클래스 선언으로 변환될 수 있습니다.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "이 구문에는 가져온 도우미가 필요하지만 '{0}' 모듈을 찾을 수 없습니다.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "이 구문에는 가져온 도우미 '{1}'이(가) 필요하지만 '{0}' 모듈에 내보낸 멤버 '{1}'이(가) 없습니다.",
   "Trailing_comma_not_allowed_1009": "후행 쉼표는 허용되지 않습니다.",
@@ -888,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "변수 선언 목록은 비워 둘 수 없습니다.",
   "Version_0_6029": "버전 {0}",
   "Watch_input_files_6005": "조사식 입력 파일입니다.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "화면을 지우지 않고, 감시 모드의 오래된 콘솔 출력을 유지할지 여부입니다.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "표준 TypeScript 라이브러리에 정의된 요소의 이름을 바꿀 수 없습니다.",
   "You_cannot_rename_this_element_8000": "이 요소의 이름을 바꿀 수 없습니다.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}'이(가) 여기에서 decorator로 사용할 인수를 너무 적게 허용합니다. 먼저 이를 호출하고 '@{0}()'을(를) 작성하시겠습니까?",

lib/lib.es2018.d.ts

@@ -19,3 +19,5 @@ and limitations under the License.
 
 
 /// <reference path="lib.es2017.d.ts" />
+/// <reference path="lib.es2018.promise.d.ts" />
+/// <reference path="lib.es2018.regexp.d.ts" />

lib/lib.es2018.promise.d.ts

@@ -0,0 +1,32 @@
+/*! *****************************************************************************
+Copyright (c) Microsoft Corporation. All rights reserved. 
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at http://www.apache.org/licenses/LICENSE-2.0  
+ 
+THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
+MERCHANTABLITY OR NON-INFRINGEMENT. 
+ 
+See the Apache Version 2.0 License for specific language governing permissions
+and limitations under the License.
+***************************************************************************** */
+
+
+
+/// <reference no-default-lib="true"/>
+
+
+/**
+ * Represents the completion of an asynchronous operation
+ */
+interface Promise<T> {
+    /**
+     * Attaches a callback that is invoked when the Promise is settled (fulfilled or rejected). The
+     * resolved value cannot be modified from the callback.
+     * @param onfinally The callback to execute when the Promise is settled (fulfilled or rejected).
+     * @returns A Promise for the completion of the callback.
+     */
+    finally(onfinally?: (() => void) | undefined | null): Promise<T>
+}

lib/lib.es2018.regexp.d.ts

@@ -0,0 +1,31 @@
+/*! *****************************************************************************
+Copyright (c) Microsoft Corporation. All rights reserved. 
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use
+this file except in compliance with the License. You may obtain a copy of the
+License at http://www.apache.org/licenses/LICENSE-2.0  
+ 
+THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, 
+MERCHANTABLITY OR NON-INFRINGEMENT. 
+ 
+See the Apache Version 2.0 License for specific language governing permissions
+and limitations under the License.
+***************************************************************************** */
+
+
+
+/// <reference no-default-lib="true"/>
+
+
+interface RegExpMatchArray {
+    groups?: {
+        [key: string]: string
+    }
+}
+
+interface RegExpExecArray {
+    groups?: {
+        [key: string]: string
+    }
+}

lib/lib.esnext.d.ts

@@ -21,4 +21,3 @@ and limitations under the License.
 /// <reference path="lib.es2018.d.ts" />
 /// <reference path="lib.esnext.asynciterable.d.ts" />
 /// <reference path="lib.esnext.array.d.ts" />
-/// <reference path="lib.esnext.promise.d.ts" />

lib/pl/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Obie metody dostępu muszą być abstrakcyjne lub nieabstrakcyjne.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Dodaj element „{0}” do istniejącej deklaracji importu z elementu „{1}”",
   "Add_async_modifier_to_containing_function_90029": "Dodaj modyfikator asynchroniczny do funkcji zawierającej",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Dodaj asercję określonego przypisania do właściwości „{0}”",
   "Add_index_signature_for_property_0_90017": "Dodaj sygnaturę indeksu dla właściwości „{0}”",
+  "Add_initializer_to_property_0_95019": "Dodaj inicjator do właściwości „{0}”",
   "Add_missing_super_call_90001": "Dodaj brakujące wywołanie „super()”",
   "Add_this_to_unresolved_variable_90008": "Dodaj „this.” do nierozpoznanej zmiennej",
+  "Add_undefined_type_to_property_0_95018": "Dodaj typ „undefined” do właściwości „{0}”",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Dodanie pliku tsconfig.json pomoże w organizowaniu projektów, które zawierają pliki TypeScript i JavaScript. Dowiedz się więcej: https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Dodatkowe kontrole",
   "Advanced_Options_6178": "Opcje zaawansowane",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Wszystkie deklaracje elementu „{0}” muszą mieć identyczne modyfikatory.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Wszystkie deklaracje „{0}” muszą mieć identyczne parametry typu.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Wszystkie deklaracje metody abstrakcyjnej muszą występować obok siebie.",
+  "All_imports_in_import_declaration_are_unused_6192": "Wszystkie importy w deklaracji importu są nieużywane.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Zezwalaj na domyślne importy z modułów bez domyślnego eksportu. To nie wpływa na emitowanie kodu, a tylko na sprawdzanie typów.",
   "Allow_javascript_files_to_be_compiled_6102": "Zezwalaj na kompilowanie plików JavaScript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "Otaczające wyliczenia ze specyfikacją const nie są dozwolone w przypadku podania flagi „--isolatedModules”.",
@@ -379,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Plik „{0}” nie znajduje się w katalogu „rootDir” „{1}”. Katalog „rootDir” powinien zawierać wszystkie pliki źródłowe.",
   "File_0_not_found_6053": "Nie można odnaleźć pliku '{0}'.",
   "File_change_detected_Starting_incremental_compilation_6032": "Wykryto zmianę pliku. Trwa rozpoczynanie kompilacji przyrostowej...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Plik jest modułem CommonJS. Może zostać przekonwertowany na moduł ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Nazwa pliku „{0}” różni się od już dołączonej nazwy pliku „{1}” tylko wielkością liter.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "Nazwa pliku „{0}” ma rozszerzenie „{1}” — zostanie ono usunięte.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "Specyfikacja pliku nie może zawierać katalogu nadrzędnego („..”) wyświetlanego po symbolu wieloznacznym katalogu rekursywnego („**”): „{0}”.",
@@ -425,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "Deklaracja importu powoduje konflikt z deklaracją lokalną „{0}”.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Deklaracje importu w przestrzeni nazw nie mogą odwoływać się do modułu.",
   "Import_emit_helpers_from_tslib_6139": "Importuj pomocników emitowania z elementu „tslib”.",
+  "Import_may_be_converted_to_a_default_import_80003": "Import może zostać przekonwertowany na import domyślny.",
   "Import_name_cannot_be_0_2438": "Import nie może mieć nazwy „{0}”.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Deklaracja importu lub eksportu w deklaracji otaczającego modułu nie może przywoływać modułu za pomocą jego nazwy względnej.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Importy nie są dozwolone w rozszerzeniach modułów. Rozważ przeniesienie ich do obejmującego modułu zewnętrznego.",
@@ -463,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "Element JSDoc „@{0}” nie został dołączony do klasy.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "Element „...” JSDoc może występować tylko w ostatnim parametrze sygnatury.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "Tag JSDoc „@param” tag ma nazwę „{0}”, ale nie ma parametru o tej nazwie.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "Tag JSDoc „@param” ma nazwę „{0}”, ale nie istnieje parametr o tej nazwie. Byłby on zgodny z elementem „arguments”, gdyby miał typ tablicy.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "Tag „@typedef” JSDoc powinien mieć adnotację typu lub powinien po nim następować tag „@property” lub „@member”.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Typy JSDoc mogą być używane wyłącznie w komentarzach dokumentacji.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Typy JSDoc mogą być przenoszone do typów TypeScript.",
   "JSX_attribute_expected_17003": "Oczekiwano atrybutu JSX.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Atrybuty JSX muszą mieć przypisane wyrażenie, które nie jest puste.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "Element JSX „{0}” nie ma odpowiedniego tagu zamykającego.",
@@ -477,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Elementy JSX nie mogą mieć wielu atrybutów o tej samej nazwie.",
   "JSX_expressions_must_have_one_parent_element_2657": "Wyrażenia JSX muszą mieć jeden element nadrzędny.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Fragment kodu JSX nie ma odpowiedniego tagu zamykającego.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Fragment JSX nie jest obsługiwany podczas używania śródwierszowej dyrektywy pragma fabryki JSX",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "W przypadku korzystania z opcji --jsxFactory fragment kodu JSX nie jest obsługiwany",
   "JSX_spread_child_must_be_an_array_type_2609": "Element podrzędny rozkładu JSX musi być typem tablicy.",
   "Jump_target_cannot_cross_function_boundary_1107": "Cel skoku nie może przekraczać granicy funkcji.",
@@ -508,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Moduł {0} już wyeksportował składową o nazwie „{1}”. Zastanów się nad jawnym ponownym eksportem, aby rozstrzygnąć niejednoznaczność.",
   "Module_0_has_no_default_export_1192": "Moduł „{0}” nie ma eksportu domyślnego.",
   "Module_0_has_no_exported_member_1_2305": "Moduł „{0}” nie ma wyeksportowanej składowej „{1}”.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "Moduł „{0}” nie ma wyeksportowanego elementu członkowskiego „{1}”. Czy chodziło o „{2}”?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Moduł „{0}” został ukryty przez deklarację lokalną o takiej samej nazwie.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Wynikiem rozpoznania modułu „{0}” jest jednostka niebędąca modułem i nie można zaimportować tego modułu przy użyciu tej konstrukcji.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Moduł „{0}” używa elementu „export =” i nie może być używany z elementem „export *”.",
@@ -651,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Zgłaszaj błąd w przypadku wyrażeń „this” z niejawnym typem „any”.",
   "Redirect_output_structure_to_the_directory_6006": "Przekieruj strukturę wyjściową do katalogu.",
   "Remove_declaration_for_Colon_0_90004": "Usuń deklarację dla: „{0}”",
+  "Remove_import_from_0_90005": "Usuń import z „{0}”",
   "Replace_import_with_0_95015": "Zamień import na element „{0}”.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Zgłoś błąd, gdy nie wszystkie ścieżki kodu zwracają wartość.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Zgłoś błędy dla przepuszczających klauzul case w instrukcji switch.",
@@ -658,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Raportuj błędy dla nieużywanych elementów lokalnych.",
   "Report_errors_on_unused_parameters_6135": "Raportuj błędy dla nieużywanych parametrów.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Wymagane parametry typu mogą nie być zgodne z opcjonalnymi parametrami typu.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "Znaleziono rozwiązanie dla modułu „{0}” w pamięci podręcznej.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "Znaleziono rozwiązanie dla modułu „{0}” w pamięci podręcznej z lokalizacji „{1}”.",
   "Resolving_from_node_modules_folder_6118": "Trwa rozpoznawanie na podstawie folderu node_modules...",
   "Resolving_module_0_from_1_6086": "======== Rozpoznawanie modułu „{0}” na podstawie „{1}”. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Rozpoznawanie nazwy modułu „{0}” względem podstawowego adresu URL „{1}” — „{2}”.",
@@ -792,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "Deklaracja zmiennej instrukcji „for...in” nie może mieć inicjatora.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "Deklaracja zmiennej instrukcji „for...of” nie może mieć inicjatora.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "Instrukcja „with” nie jest obsługiwana. Wszystkie symbole w bloku „with” będą mieć typ „any”.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Ta funkcja konstruktora może zostać przekonwertowana na deklarację klasy.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Ta składnia wymaga zaimportowanego pomocnika, ale nie można znaleźć modułu „{0}”.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Ta składnia wymaga zaimportowanego pomocnika o nazwie „{1}”, ale moduł „{0}” nie ma wyeksportowanej składowej „{1}”.",
   "Trailing_comma_not_allowed_1009": "Końcowy przecinek jest niedozwolony.",
@@ -888,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "Lista deklaracji zmiennych nie może być pusta.",
   "Version_0_6029": "Wersja {0}",
   "Watch_input_files_6005": "Obserwuj pliki wejściowe.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Określa, czy zachować nieaktualne dane wyjściowe konsoli w trybie śledzenia zamiast wyczyścić ekran.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Nie można zmienić nazw elementów zdefiniowanych w standardowej bibliotece TypeScript.",
   "You_cannot_rename_this_element_8000": "Nie można zmienić nazwy tego elementu.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "Element „{0}” akceptuje za mało argumentów, aby można go było użyć w tym miejscu jako dekorator. Czy chcesz najpierw go wywołać i zapisać tag „@{0}()”?",

lib/protocol.d.ts

@@ -23,10 +23,12 @@ declare namespace ts.server.protocol {
         GeterrForProject = "geterrForProject",
         SemanticDiagnosticsSync = "semanticDiagnosticsSync",
         SyntacticDiagnosticsSync = "syntacticDiagnosticsSync",
+        SuggestionDiagnosticsSync = "suggestionDiagnosticsSync",
         NavBar = "navbar",
         Navto = "navto",
         NavTree = "navtree",
         NavTreeFull = "navtree-full",
+        /** @deprecated */
         Occurrences = "occurrences",
         DocumentHighlights = "documentHighlights",
         Open = "open",
@@ -44,6 +46,7 @@ declare namespace ts.server.protocol {
         OpenExternalProject = "openExternalProject",
         OpenExternalProjects = "openExternalProjects",
         CloseExternalProject = "closeExternalProject",
+        GetOutliningSpans = "getOutliningSpans",
         TodoComments = "todoComments",
         Indentation = "indentation",
         DocCommentTemplate = "docCommentTemplate",
@@ -202,6 +205,31 @@ declare namespace ts.server.protocol {
          */
         onlyMultiLine: boolean;
     }
+    /**
+     * Request to obtain outlining spans in file.
+     */
+    interface OutliningSpansRequest extends FileRequest {
+        command: CommandTypes.GetOutliningSpans;
+    }
+    interface OutliningSpan {
+        /** The span of the document to actually collapse. */
+        textSpan: TextSpan;
+        /** The span of the document to display when the user hovers over the collapsed span. */
+        hintSpan: TextSpan;
+        /** The text to display in the editor for the collapsed region. */
+        bannerText: string;
+        /**
+         * Whether or not this region should be automatically collapsed when
+         * the 'Collapse to Definitions' command is invoked.
+         */
+        autoCollapse: boolean;
+    }
+    /**
+     * Response to OutliningSpansRequest request.
+     */
+    interface OutliningSpansResponse extends Response {
+        body?: OutliningSpan[];
+    }
     /**
      * A request to get indentation for a location in file
      */
@@ -627,6 +655,7 @@ declare namespace ts.server.protocol {
         openingBrace: string;
     }
     /**
+     * @deprecated
      * Get occurrences request; value of command field is
      * "occurrences". Return response giving spans that are relevant
      * in the file at a given line and column.
@@ -634,6 +663,7 @@ declare namespace ts.server.protocol {
     interface OccurrencesRequest extends FileLocationRequest {
         command: CommandTypes.Occurrences;
     }
+    /** @deprecated */
     interface OccurrencesResponseItem extends FileSpan {
         /**
          * True if the occurrence is a write location, false otherwise.
@@ -644,6 +674,7 @@ declare namespace ts.server.protocol {
          */
         isInString?: true;
     }
+    /** @deprecated */
     interface OccurrencesResponse extends Response {
         body?: OccurrencesResponseItem[];
     }
@@ -906,6 +937,7 @@ declare namespace ts.server.protocol {
          * The format options to use during formatting and other code editing features.
          */
         formatOptions?: FormatCodeSettings;
+        preferences?: UserPreferences;
         /**
          * The host's additional supported .js file extensions
          */
@@ -1240,6 +1272,8 @@ declare namespace ts.server.protocol {
          * This may be omitted to indicate that the code fix can't be applied in a group.
          */
         fixId?: {};
+        /** Should be present if and only if 'fixId' is. */
+        fixAllDescription?: string;
     }
     /**
      * Format and format on key response message.
@@ -1278,15 +1312,13 @@ declare namespace ts.server.protocol {
          */
         prefix?: string;
         /**
-         * If enabled, TypeScript will search through all external modules' exports and add them to the completions list.
-         * This affects lone identifier completions but not completions on the right hand side of `obj.`.
+         * @deprecated Use UserPreferences.includeCompletionsForModuleExports
          */
-        includeExternalModuleExports: boolean;
+        includeExternalModuleExports?: boolean;
         /**
-         * If enabled, the completion list will include completions with invalid identifier names.
-         * For those entries, The `insertText` and `replacementSpan` properties will be set to change from `.x` property access to `["x"]`.
+         * @deprecated Use UserPreferences.includeCompletionsWithInsertText
          */
-        includeInsertTextCompletions: boolean;
+        includeInsertTextCompletions?: boolean;
     }
     /**
      * Completions request; value of command field is "completions".
@@ -1541,6 +1573,12 @@ declare namespace ts.server.protocol {
     interface SemanticDiagnosticsSyncResponse extends Response {
         body?: Diagnostic[] | DiagnosticWithLinePosition[];
     }
+    interface SuggestionDiagnosticsSyncRequest extends FileRequest {
+        command: CommandTypes.SuggestionDiagnosticsSync;
+        arguments: SuggestionDiagnosticsSyncRequestArgs;
+    }
+    type SuggestionDiagnosticsSyncRequestArgs = SemanticDiagnosticsSyncRequestArgs;
+    type SuggestionDiagnosticsSyncResponse = SemanticDiagnosticsSyncResponse;
     /**
      * Synchronous request for syntactic diagnostics of one file.
      */
@@ -1637,7 +1675,7 @@ declare namespace ts.server.protocol {
          */
         text: string;
         /**
-         * The category of the diagnostic message, e.g. "error" vs. "warning"
+         * The category of the diagnostic message, e.g. "error", "warning", or "suggestion".
          */
         category: string;
         /**
@@ -1665,8 +1703,9 @@ declare namespace ts.server.protocol {
          */
         diagnostics: Diagnostic[];
     }
+    type DiagnosticEventKind = "semanticDiag" | "syntaxDiag" | "suggestionDiag";
     /**
-     * Event message for "syntaxDiag" and "semanticDiag" event types.
+     * Event message for DiagnosticEventKind event types.
      * These events provide syntactic and semantic errors for a file.
      */
     interface DiagnosticEvent extends Event {
@@ -2036,6 +2075,20 @@ declare namespace ts.server.protocol {
         placeOpenBraceOnNewLineForControlBlocks?: boolean;
         insertSpaceBeforeTypeAnnotation?: boolean;
     }
+    interface UserPreferences {
+        readonly quotePreference?: "double" | "single";
+        /**
+         * If enabled, TypeScript will search through all external modules' exports and add them to the completions list.
+         * This affects lone identifier completions but not completions on the right hand side of `obj.`.
+         */
+        readonly includeCompletionsForModuleExports?: boolean;
+        /**
+         * If enabled, the completion list will include completions with invalid identifier names.
+         * For those entries, The `insertText` and `replacementSpan` properties will be set to change from `.x` property access to `["x"]`.
+         */
+        readonly includeCompletionsWithInsertText?: boolean;
+        readonly importModuleSpecifierPreference?: "relative" | "non-relative";
+    }
     interface CompilerOptions {
         allowJs?: boolean;
         allowSyntheticDefaultImports?: boolean;
@@ -2162,7 +2215,7 @@ declare namespace ts.server.protocol {
         none = "none",
         definition = "definition",
         reference = "reference",
-        writtenReference = "writtenReference",
+        writtenReference = "writtenReference"
     }
 
     enum ScriptElementKind {
@@ -2230,7 +2283,7 @@ declare namespace ts.server.protocol {
         /**
          * <JsxTagName attribute1 attribute2={0} />
          */
-        jsxAttribute = "JSX attribute",
+        jsxAttribute = "JSX attribute"
     }
 
     interface TypeAcquisition {

lib/pt-BR/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Acessadores devem ser abstratos ou não abstratos.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Adicionar '{0}' à declaração de importação existente de \"{1}\"",
   "Add_async_modifier_to_containing_function_90029": "Adicione o modificador assíncrono que contém a função",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Adicionar a asserção de atribuição definitiva à propriedade '{0}'",
   "Add_index_signature_for_property_0_90017": "Adicionar assinatura de índice para a propriedade '{0}'",
+  "Add_initializer_to_property_0_95019": "Adicionar inicializador à propriedade '{0}'",
   "Add_missing_super_call_90001": "Adicionar chamada 'super()' ausente",
   "Add_this_to_unresolved_variable_90008": "Adicionar 'this.' a uma variável não resolvida",
+  "Add_undefined_type_to_property_0_95018": "Adicionar tipo 'indefinido' à propriedade '{0}'",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Adicionar um arquivo tsconfig.json ajudará a organizar projetos que contêm arquivos TypeScript e JavaScript. Saiba mais em https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Verificações Adicionais",
   "Advanced_Options_6178": "Opções Avançadas",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Todas as declarações de '{0}' devem ter modificadores idênticos.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Todas as declarações de '{0}' devem ter parâmetros de tipo idênticos.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Todas as declarações de um método abstrato devem ser consecutivas.",
+  "All_imports_in_import_declaration_are_unused_6192": "Nenhuma das importações na declaração de importação está sendo utilizada.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Permita importações padrão de módulos sem exportação padrão. Isso não afeta a emissão do código, apenas a verificação de digitação.",
   "Allow_javascript_files_to_be_compiled_6102": "Permita que arquivos javascript sejam compilados.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "As enumerações de constante de ambiente não são permitidas quando o sinalizador '--isolatedModules' é fornecido.",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Habilita o suporte experimental para decoradores ES7.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Habilita o suporte experimental para a emissão de tipo de metadados para decoradores.",
   "Enum_0_used_before_its_declaration_2450": "A enumeração '{0}' usada antes de sua declaração.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "As declarações de enum apenas podem se mescladas com namespaces ou com outras declarações de enum.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Declarações de enumeração devem ser const ou não const.",
   "Enum_member_expected_1132": "Membro de enumeração esperado.",
   "Enum_member_must_have_initializer_1061": "O membro de enumeração deve ter um inicializador.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "O arquivo '{0}' não está em 'rootDir' '{1}'. Espera-se que 'rootDir' contenha todos os arquivos de origem.",
   "File_0_not_found_6053": "Arquivo '{0}' não encontrado.",
   "File_change_detected_Starting_incremental_compilation_6032": "Alteração do arquivo detectada. Iniciando compilação incremental...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "O arquivo é um módulo CommonJS; ele pode ser convertido em um módulo ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "O nome do arquivo '{0}' difere do nome de arquivo '{1}' já incluído somente em maiúsculas e minúsculas.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "O nome do arquivo '{0}' tem uma extensão '{1}' – remoção.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "A especificação de arquivo não pode conter um diretório pai ('..') que aparece após um curinga de diretório recursivo ('**'): '{0}'.",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "A declaração da importação está em conflito com a declaração local '{0}'.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "As declarações de importação em um namespace não podem fazer referência a um módulo.",
   "Import_emit_helpers_from_tslib_6139": "Importar auxiliares de emissão de 'tslib'.",
+  "Import_may_be_converted_to_a_default_import_80003": "A importação pode ser convertida em uma importação padrão.",
   "Import_name_cannot_be_0_2438": "O nome da importação não pode ser '{0}'.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "A declaração de importação e exportação em uma declaração de módulo de ambiente não pode fazer referência ao módulo por meio do nome do módulo relativo.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Importações não são permitidas em acréscimos de módulo. Considere movê-las para o módulo externo delimitador.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "O '@{0}' do JSDoc não está anexado a uma classe.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' só pode aparecer no último parâmetro de uma assinatura.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "A marcação do JSDoc \"@param\" tem o nome \"{0}\", mas não há nenhum parâmetro com esse nome.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "A marca '@param' do JSDoc tem o nome '{0}', mas não há nenhum parâmetro com esse nome. Ela corresponderia a 'argumentos' se tivesse um tipo de matriz.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "A marca JSDoc \"@typedef\" deve ter uma anotação de tipo ou ser seguida pelas marcas \"@property\" or \"@member\".",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Os tipos de JSDoc podem ser usados somente dentro dos comentários de documentação.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Tipos JSDoc podem ser movidos para tipos TypeScript.",
   "JSX_attribute_expected_17003": "Atributo JSX esperado.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Os atributos JSX só devem ser atribuídos a 'expressões' que não estejam vazias.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "O elemento JSX '{0}' não tem uma marcação de fechamento correspondente.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Elementos JSX não podem ter vários atributos com o mesmo nome.",
   "JSX_expressions_must_have_one_parent_element_2657": "As expressões JSX devem ter um elemento pai.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "O fragmento JSX não tem uma marcação de fechamento correspondente.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "O fragmento de JSX não é compatível ao se utilizar um pragma de fábrica JSX embutido",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "O fragmento JSX não é compatível com o uso de --jsxFactory",
   "JSX_spread_child_must_be_an_array_type_2609": "O filho do espalhamento JSX deve ser um tipo de matriz.",
   "Jump_target_cannot_cross_function_boundary_1107": "O destino do salto não pode ultrapassar o limite de função.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "O módulo {0} já exportou um membro denominado '{1}'. Considere reexportar explicitamente para resolver a ambiguidade.",
   "Module_0_has_no_default_export_1192": "O módulo '{0}' não tem padrão de exportação.",
   "Module_0_has_no_exported_member_1_2305": "O módulo '{0}' não tem nenhum membro exportado '{1}'.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "O módulo '{0}' não tem nenhum membro exportado '{1}'. Você quis dizer '{2}'?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "O módulo '{0}' está oculto por uma declaração de local com o mesmo nome.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "O módulo '{0}' resolve para uma entidade sem módulo e não pode ser importado usando este constructo.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "O módulo '{0}' usa 'export =' e não pode ser usado com 'export *'.",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Gerar erro em expressões 'this' com um tipo 'any' implícito.",
   "Redirect_output_structure_to_the_directory_6006": "Redirecione a estrutura de saída para o diretório.",
   "Remove_declaration_for_Colon_0_90004": "Remover declaração para: '{0}'",
+  "Remove_import_from_0_90005": "Remover importação do '{0}'",
   "Replace_import_with_0_95015": "Substitua a importação com '{0}'.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Relate erro quando nem todos os caminhos de código na função retornarem um valor.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Relate erros para casos de fallthrough na instrução switch.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Relatar erros nos locais não utilizados.",
   "Report_errors_on_unused_parameters_6135": "Relatar erros nos parâmetros não utilizados.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Os parâmetros de tipo necessários podem não seguir os parâmetros de tipo opcionais.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "A resolução para o modo '{0}' foi encontrada no cache.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "A resolução para o módulo '{0}' foi encontrada no cache do local '{1}'.",
   "Resolving_from_node_modules_folder_6118": "Resolvendo na pasta node_modules...",
   "Resolving_module_0_from_1_6086": "======== Resolvendo módulo '{0}' de '{1}'. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Resolvendo nome de módulo '{0}' relativo à URL base '{1}' - '{2}'.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "A declaração de variável de uma instrução 'for...in' não pode ter um inicializador.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "A declaração de variável de uma instrução 'for...of' não pode ter um inicializador.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "A instrução \"with\" não tem suporte. Todos os símbolos em um bloco \"with\" terão o tipo \"any\".",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Esta função de construtor pode ser convertida em uma declaração de classe.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Essa sintaxe requer um auxiliar importado, mas o módulo '{0}' não pode ser encontrado.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Essa sintaxe requer um auxiliar importado chamado '{1}', mas o módulo '{0}' não tem nenhum membro exportado '{1}'.",
   "Trailing_comma_not_allowed_1009": "Vírgula à direita não permitida.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "A lista de declaração de variável não pode estar vazia.",
   "Version_0_6029": "Versão {0}",
   "Watch_input_files_6005": "Observe os arquivos de entrada.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Se se deve manter a saída de console desatualizada no modo de inspeção, em vez de limpar a tela.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Não é possível renomear elementos que são definidos na biblioteca TypeScript padrão.",
   "You_cannot_rename_this_element_8000": "Você não pode renomear este elemento.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' aceita muito poucos argumentos para serem usados como um decorador aqui. Você quis dizer para chamá-lo primeiro e gravar '@{0}()'?",

lib/ru/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "Методы доступа должны быть абстрактными или неабстрактными.",
   "Add_0_to_existing_import_declaration_from_1_90015": "Добавьте \"{0}\" в существующее объявление импорта из \"{1}\"",
   "Add_async_modifier_to_containing_function_90029": "Добавьте модификатор async в содержащую функцию",
+  "Add_definite_assignment_assertion_to_property_0_95020": "Добавить утверждение определенного присваивания к свойству \"{0}\"",
   "Add_index_signature_for_property_0_90017": "Добавьте сигнатуру индекса для свойства \"{0}\"",
+  "Add_initializer_to_property_0_95019": "Добавить инициализатор к свойству \"{0}\"",
   "Add_missing_super_call_90001": "Добавьте отсутствующий вызов \"super()\"",
   "Add_this_to_unresolved_variable_90008": "Добавьте \"this.\" к неразрешенной переменной",
+  "Add_undefined_type_to_property_0_95018": "Добавить тип \"undefined\" к свойству \"{0}\"",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Добавление файла tsconfig.json поможет организовать проекты, содержащие файлы TypeScript и JavaScript. Дополнительные сведения: https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Дополнительные проверки",
   "Advanced_Options_6178": "Дополнительные параметры",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Все объявления \"{0}\" должны иметь одинаковые модификаторы.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Все объявления \"{0}\" должны иметь одинаковые параметры типа.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Все объявления абстрактных методов должны быть последовательными.",
+  "All_imports_in_import_declaration_are_unused_6192": "Ни один из импортов в объявлении импорта не используется.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Разрешить импорт по умолчанию из модулей без экспорта по умолчанию. Это не повлияет на выведение кода — только на проверку типов.",
   "Allow_javascript_files_to_be_compiled_6102": "Разрешить компиляцию файлов javascript.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "Перечисление внешних констант не разрешено, если задан флаг \"--isolatedModules\".",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "Включает экспериментальную поддержку для декораторов ES7.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Включает экспериментальную поддержку для создания метаданных типа для декораторов.",
   "Enum_0_used_before_its_declaration_2450": "Перечисление \"{0}\" использовано прежде, чем объявлено.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Объявления перечислений можно объединять только с пространствами имен или другими объявлениями перечислений.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Все объявления перечислений должны иметь значение const или отличное от const.",
   "Enum_member_expected_1132": "Ожидался элемент перечисления.",
   "Enum_member_must_have_initializer_1061": "У элемента перечисления должен быть инициализатор.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "Файл \"{0}\" отсутствует в \"rootDir\" \"{1}\". Все исходные файлы должны находиться в каталоге \"rootDir\".",
   "File_0_not_found_6053": "Файл \"{0}\" не найден.",
   "File_change_detected_Starting_incremental_compilation_6032": "Обнаружено изменение в файле. Запускается инкрементная компиляция...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Файл является модулем CommonJS; его можно преобразовать в модуль ES6.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "Файл с именем \"{0}\" отличается от уже включенного файла с именем \"{1}\" только регистром.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "У имени файла \"{0}\" есть расширение \"{1}\"; расширение удаляется.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "Спецификация файла не может содержать родительский каталог (\"..\"), который указывается после рекурсивного подстановочного знака каталога (\"**\"): \"{0}\".",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "Объявление импорта конфликтует с локальным объявлением \"{0}\".",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Объявления импорта в пространстве имен не могут иметь ссылки на модуль.",
   "Import_emit_helpers_from_tslib_6139": "Импорт вспомогательных объектов, участвующих в порождении, из \"tslib\".",
+  "Import_may_be_converted_to_a_default_import_80003": "Импорт можно преобразовать в импорт по умолчанию.",
   "Import_name_cannot_be_0_2438": "Имя импорта не может иметь значение \"{0}\".",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Объявление импорта или экспорта во объявлении окружающего модуля не может иметь ссылки на модуль через относительное имя модуля.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Операции импорта запрещены в улучшениях модуля. Попробуйте переместить их в содержащий внешний модуль.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "Параметр \"@{0}\" JSDoc не связан с классом.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc \"...\" может использоваться только в последнем параметре сигнатуры.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "У тега \"@param\" JSDoc есть имя \"{0}\", но параметр с таким именем отсутствует.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "Тег \"@param\" JSDoc имеет имя \"{0}\", но параметра с таким именем не существует. Он совпадал бы с \"arguments\", если бы у него был указан тип массива.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "У тега \"@typedef\" JSDoc должна быть аннотация типа, или после него должны стоять теги \"@property\" или \"@member\".",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "Типы JSDoc можно использовать только в комментариях в документации.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "Типы JSDoc могут быть преобразованы в типы TypeScript.",
   "JSX_attribute_expected_17003": "Ожидался атрибут JSX.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "Атрибутам JSX должно назначаться только непустое \"expression\".",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "Элемент JSX \"{0}\" не содержит соответствующий закрывающий тег.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "Элементы JSX не могут иметь несколько атрибутов с одним именем.",
   "JSX_expressions_must_have_one_parent_element_2657": "Выражения JSX должны иметь один родительский элемент.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "Фрагмент JSX не имеет соответствующего закрывающего тега.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Фрагмент JSX не поддерживается при использовании встроенной директивы pragma фабрики JSX.",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "Фрагмент JSX не поддерживается при использовании --jsxFactory",
   "JSX_spread_child_must_be_an_array_type_2609": "Дочерний объект расширения JSX должен иметь тип массива.",
   "Jump_target_cannot_cross_function_boundary_1107": "Целевой объект перехода не может находиться за границей функции.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "Модуль {0} уже экспортировал элемент с именем \"{1}\". Попробуйте явно повторно экспортировать его, чтобы устранить неоднозначность.",
   "Module_0_has_no_default_export_1192": "У модуля \"{0}\" нет экспорта по умолчанию.",
   "Module_0_has_no_exported_member_1_2305": "Модуль \"{0}\" не имеет экспортированного элемента \"{1}\".",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "В модуле \"{0}\" нет экспортированного элемента \"{1}\". Вы имели в виду \"{2}\"?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "Модуль \"{0}\" скрыт локальным объявлением с таким же именем.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "Модуль \"{0}\" разрешается в немодульную сущность и не может быть импортирован с помощью этой конструкции.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "Модуль \"{0}\" использует параметр \"export =\" и не может использоваться с параметром \"export *\".",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Вызвать ошибку в выражениях this с неявным типом any.",
   "Redirect_output_structure_to_the_directory_6006": "Перенаправить структуру вывода в каталог.",
   "Remove_declaration_for_Colon_0_90004": "Удалите объявление: \"{0}\"",
+  "Remove_import_from_0_90005": "Удалить импорт из \"{0}\"",
   "Replace_import_with_0_95015": "Замена импорта на \"{0}\".",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "Сообщать об ошибке, если не все пути кода в функции возвращают значение.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "Сообщать об ошибках для случаев передачи управления в операторе switch.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Сообщать об ошибках в неиспользованных локальных переменных.",
   "Report_errors_on_unused_parameters_6135": "Сообщать об ошибках в неиспользованных параметрах.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Обязательные параметры типа не могут следовать за необязательными параметрами типа.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "Разрешение для модуля \"{0}\" найдено в кэше.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "Разрешение для модуля \"{0}\" найдено в кэше из расположения \"{1}\".",
   "Resolving_from_node_modules_folder_6118": "Идет разрешение из папки node_modules...",
   "Resolving_module_0_from_1_6086": "======== Идет разрешение модуля \"{0}\" из \"{1}\". ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "Идет разрешение имени модуля \"{0}\" относительного к базовому URL-адресу \"{1}\" — \"{2}\".",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "Объявление переменной оператора for...in не может содержать инициализатор.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "Объявление переменной оператора for...of не может содержать инициализатор.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "Оператор with не поддерживается. Все символы в блоке with получат тип any.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Эту функцию конструктора можно преобразовать в объявление класса.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Для этого синтаксиса требуется импортированный вспомогательный объект, но найти модуль \"{0}\" не удается.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Для этого синтаксиса требуется импортированный вспомогательный объект \"{1}\", но у модуля \"{0}\" нет экспортированного элемента \"{1}\".",
   "Trailing_comma_not_allowed_1009": "Завершающая запятая запрещена.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "Список объявлений переменной не может быть пустым.",
   "Version_0_6029": "Версия {0}",
   "Watch_input_files_6005": "Просмотр входных файлов.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Сохранять ли устаревшие выходные данные консоли в режиме просмотра вместо очистки экрана.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Невозможно переименовать элементы, определенные в стандартной библиотеке TypeScript.",
   "You_cannot_rename_this_element_8000": "Этот элемент переименовать нельзя.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "\"{0}\" принимает слишком мало аргументов для использования в качестве декоратора. Вы хотели сначала вызвать его и записать \"@{0}()\"?",

lib/tr/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "İki erişimci de soyut veya soyut olmayan olmalıdır.",
   "Add_0_to_existing_import_declaration_from_1_90015": "'{0}' öğesini \"{1}\" konumundaki mevcut içeri aktarma bildirimine ekle",
   "Add_async_modifier_to_containing_function_90029": "İçeren işleve zaman uyumsuz değiştirici ekle",
+  "Add_definite_assignment_assertion_to_property_0_95020": "'{0}' özelliğine belirli atama onayı ekle",
   "Add_index_signature_for_property_0_90017": "'{0}' özelliği için dizin imzası ekle",
+  "Add_initializer_to_property_0_95019": "'{0}' özelliğine başlatıcı ekle",
   "Add_missing_super_call_90001": "Eksik 'super()' çağrısını ekle",
   "Add_this_to_unresolved_variable_90008": "Çözümlenmemiş değişkene 'this.' ekle",
+  "Add_undefined_type_to_property_0_95018": "'{0}' özelliğine 'undefined' türünü ekle",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "Bir tsconfig.json dosyası eklemek, hem TypeScript hem de JavaScript dosyaları içeren projeleri düzenlemenize yardımcı olur. Daha fazla bilgi edinmek için bkz. https://aka.ms/tsconfig.",
   "Additional_Checks_6176": "Ek Denetimler",
   "Advanced_Options_6178": "Gelişmiş Seçenekler",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "Tüm '{0}' bildirimleri aynı değiştiricilere sahip olmalıdır.",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "Tüm '{0}' bildirimleri özdeş tür parametrelerine sahip olmalıdır.",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "Soyut metoda ait tüm bildirimler ardışık olmalıdır.",
+  "All_imports_in_import_declaration_are_unused_6192": "İçeri aktarma bildirimindeki hiçbir içeri aktarma kullanılmadı.",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "Varsayılan dışarı aktarmaya sahip olmayan modüllerde varsayılan içeri aktarmalara izin verin. Bu işlem kod üretimini etkilemez, yalnızca tür denetimini etkiler.",
   "Allow_javascript_files_to_be_compiled_6102": "Javascript dosyalarının derlenmesine izin ver.",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "'--isolatedModules' bayrağı sağlandığında çevresel const sabit listesi değerlerine izin verilmez.",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "ES7 dekoratörleri için deneysel desteği etkinleştirir.",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "Dekoratörlere tür meta verisi gönderme için deneysel desteği etkinleştirir.",
   "Enum_0_used_before_its_declaration_2450": "'{0}' sabit listesi, bildiriminden önce kullanıldı.",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "Enum bildirimleri yalnızca ad alanı veya diğer enum bildirimleri ile birleştirilebilir.",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "Sabit listesi bildirimlerinin tümü const veya const olmayan değerler olmalıdır.",
   "Enum_member_expected_1132": "Sabit listesi üyesi bekleniyor.",
   "Enum_member_must_have_initializer_1061": "Sabit listesi üyesi bir başlatıcıya sahip olmalıdır.",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "'{0}' dosyası, 'rootDir' '{1}' dizininde değil. 'rootDir' dizininin tüm kaynak dosyalarını içermesi bekleniyor.",
   "File_0_not_found_6053": "'{0}' dosyası bulunamadı.",
   "File_change_detected_Starting_incremental_compilation_6032": "Dosya değişikliği algılandı. Artımlı derleme başlatılıyor...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "Bir CommonJS modülü olan dosya, ES6 modülüne dönüştürülebilir.",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "'{0}' dosya adının, zaten eklenmiş olan '{1}' dosya adından tek farkı, büyük/küçük harf kullanımı.",
   "File_name_0_has_a_1_extension_stripping_it_6132": "'{0}' dosya adında '{1}' uzantısı var; uzantı ayrılıyor.",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "Dosya belirtimi, özyinelemeli dizin joker karakterinden ('**') sonra görünen bir üst dizin ('..') içeremez: '{0}'.",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "İçeri aktarma bildirimi, yerel '{0}' bildirimiyle çakışıyor.",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "Ad alanındaki içeri aktarma bildirimleri bir modüle başvuramaz.",
   "Import_emit_helpers_from_tslib_6139": "'Tslib'den yayma yardımcılarını içeri aktar.",
+  "Import_may_be_converted_to_a_default_import_80003": "İçeri aktarma varsayılan bir içeri aktarmaya dönüştürülebilir.",
   "Import_name_cannot_be_0_2438": "İçeri aktarma adı '{0}' olamaz.",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "Çevresel modül bildirimindeki içeri veya dışarı aktarma bildirimi, göreli modül adı aracılığıyla modüle başvuramaz.",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "Modül genişletmelerinde içeri aktarmalara izin verilmez. Bunları, kapsayan dış modüle taşımanız önerilir.",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc '@{0}' bir sınıfa eklenmemiş.",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' yalnızca bir imzanın son parametresi içinde görünebilir.",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "JSDoc '@param' etiketinin adı '{0}' ancak bu ada sahip bir parametre yok.",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "JSDoc '@param' etiketi '{0}' adına sahip ancak bu ada sahip bir parametre yok. Bir dizi türü olsaydı 'arguments' ile eşleşirdi.",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "JSDoc '@typedef' etiketi bir tür ek açıklamasına sahip olmalıdır veya sonrasında '@property' ya da '@member' etiketlerinden biri gelmelidir.",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc türleri yalnızca belge açıklamalarının içinde kullanılabilir.",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc türleri TypeScript türlerine taşınabilir.",
   "JSX_attribute_expected_17003": "JSX özniteliği bekleniyor.",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "JSX özniteliklerine yalnızca boş olmayan 'expression' ifadesi atanabilir.",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "'{0}' adlı JSX öğesine karşılık gelen bir kapatma etiketi yok.",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX öğeleri aynı ada sahip birden fazla özniteliğe sahip olamaz.",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX ifadelerinin bir üst öğesi olmalıdır.",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "JSX parçasına karşılık gelen bir kapatma etiketi yok.",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "Satır içi JSX fabrika pragma'sı kullanılırken JSX parçası desteklenmez",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "JSX parçası --jsxFactory kullanılırken desteklenmiyor",
   "JSX_spread_child_must_be_an_array_type_2609": "JSX yayılma alt öğesi, bir dizi türü olmalıdır.",
   "Jump_target_cannot_cross_function_boundary_1107": "Atlama hedefi işlev sınırını geçemez.",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "{0} modülü, '{1}' adlı bir üyeyi zaten dışarı aktardı. Belirsizliği çözmek için açık olarak yeniden dışarı aktarmayı göz önünde bulundurun.",
   "Module_0_has_no_default_export_1192": "'{0}' modülü için varsayılan dışarı aktarma yok.",
   "Module_0_has_no_exported_member_1_2305": "'{0}' modülü, dışarı aktarılan '{1}' üyesine sahip değil.",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "'{0}' modülünün dışa aktarılan '{1}' adlı bir üyesi yok. Şunu mu demek istediniz: '{2}'?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "'{0}' modülü, aynı ada sahip bir yerel bildirim tarafından gizleniyor.",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "'{0}' modülü, modül olmayan bir varlığa çözümleniyor ve bu oluşturma ile içeri aktarılamaz.",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "'{0}' modülü 'export =' kullanıyor ve 'export *' ile birlikte kullanılamaz.",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "Örtük olarak 'any' türü içeren 'this' ifadelerinde hata tetikle.",
   "Redirect_output_structure_to_the_directory_6006": "Çıktı yapısını dizine yeniden yönlendir.",
   "Remove_declaration_for_Colon_0_90004": "'{0}' bildirimini kaldır",
+  "Remove_import_from_0_90005": "'{0}' öğesinden içeri aktarmayı kaldır",
   "Replace_import_with_0_95015": "İçeri aktarma işlemini '{0}' ile değiştirin.",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "İşlevdeki tüm kod yolları bir değer döndürmediğinde hata bildir.",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "switch deyiminde sonraki ifadelere geçiş ile ilgili hataları bildir.",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "Kullanılmayan yerel öğelerdeki hataları bildirin.",
   "Report_errors_on_unused_parameters_6135": "Kullanılmayan parametrelerdeki hataları bildirin.",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "Gerekli tür parametreleri, isteğe bağlı tür parametrelerini takip edemez.",
-  "Resolution_for_module_0_was_found_in_cache_6147": "'{0}' modülüne yönelik çözüm önbellekte bulundu.",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "'{0}' modülünün çözümü '{1}' konumundaki önbellekte bulundu.",
   "Resolving_from_node_modules_folder_6118": "Node_modules klasöründen çözümleniyor...",
   "Resolving_module_0_from_1_6086": "======== '{0}' modülü '{1}' öğesinden çözümleniyor. ========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "'{0}' modül adı, '{1}' - '{2}' temel url'sine göre çözümleniyor.",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "'for...in' deyiminin değişken bildirimi bir başlatıcıya sahip olamaz.",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "'for...of' deyiminin değişken bildirimi bir başlatıcıya sahip olamaz.",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "'with' ifadesi desteklenmiyor. 'with' bloklarındaki tüm simgeler 'any' türüne sahip olacaktır.",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "Bu oluşturucu işlevi bir sınıf bildirimine dönüştürülebilir.",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "Bu söz dizimi, içeri aktarılan bir yardımcı gerektiriyor ancak '{0}' modülü bulunamıyor.",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "Bu söz dizimi, '{1}' adlı içeri aktarılan yardımcıyı gerektiriyor ancak '{0}' modülünde dışarı aktarılan '{1}' üyesi yok.",
   "Trailing_comma_not_allowed_1009": "Sona eklenen virgüle izin verilmez.",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "Değişken bildirim listesi boş olamaz.",
   "Version_0_6029": "Sürüm {0}",
   "Watch_input_files_6005": "Giriş dosyalarını izleyin.",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "Eski konsol çıktısının ekrandan kaldırılmak yerine izleme modunda tutulup tutulmayacağı.",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "Standart TypeScript kitaplığında tanımlanmış öğeleri yeniden adlandıramazsınız.",
   "You_cannot_rename_this_element_8000": "Bu öğeyi yeniden adlandıramazsınız.",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' burada dekoratör olarak kullanılmak için çok az bağımsız değişken kabul ediyor. Önce çağırıp '@{0}()' yazmak mı istediniz?",

lib/typescript.d.ts

@@ -59,7 +59,8 @@ declare namespace ts {
         pos: number;
         end: number;
     }
-    type JsDocSyntaxKind = SyntaxKind.EndOfFileToken | SyntaxKind.WhitespaceTrivia | SyntaxKind.AtToken | SyntaxKind.NewLineTrivia | SyntaxKind.AsteriskToken | SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.LessThanToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.EqualsToken | SyntaxKind.CommaToken | SyntaxKind.DotToken | SyntaxKind.Identifier | SyntaxKind.Unknown;
+    type JsDocSyntaxKind = SyntaxKind.EndOfFileToken | SyntaxKind.WhitespaceTrivia | SyntaxKind.AtToken | SyntaxKind.NewLineTrivia | SyntaxKind.AsteriskToken | SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.LessThanToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.EqualsToken | SyntaxKind.CommaToken | SyntaxKind.DotToken | SyntaxKind.Identifier | SyntaxKind.NoSubstitutionTemplateLiteral | SyntaxKind.Unknown;
+    type JsxTokenSyntaxKind = SyntaxKind.LessThanSlashToken | SyntaxKind.EndOfFileToken | SyntaxKind.ConflictMarkerTrivia | SyntaxKind.JsxText | SyntaxKind.JsxTextAllWhiteSpaces | SyntaxKind.OpenBraceToken | SyntaxKind.LessThanToken;
     enum SyntaxKind {
         Unknown = 0,
         EndOfFileToken = 1,
@@ -389,7 +390,7 @@ declare namespace ts {
         FirstJSDocNode = 274,
         LastJSDocNode = 292,
         FirstJSDocTagNode = 284,
-        LastJSDocTagNode = 292,
+        LastJSDocTagNode = 292
     }
     enum NodeFlags {
         None = 0,
@@ -417,7 +418,7 @@ declare namespace ts {
         ReachabilityCheckFlags = 384,
         ReachabilityAndEmitFlags = 1408,
         ContextFlags = 6387712,
-        TypeExcludesFlags = 20480,
+        TypeExcludesFlags = 20480
     }
     enum ModifierFlags {
         None = 0,
@@ -438,6 +439,7 @@ declare namespace ts {
         NonPublicAccessibilityModifier = 24,
         TypeScriptModifier = 2270,
         ExportDefault = 513,
+        All = 3071
     }
     enum JsxFlags {
         None = 0,
@@ -445,7 +447,7 @@ declare namespace ts {
         IntrinsicNamedElement = 1,
         /** An element inferred from the string index signature of the JSX.IntrinsicElements interface */
         IntrinsicIndexedElement = 2,
-        IntrinsicElement = 3,
+        IntrinsicElement = 3
     }
     interface Node extends TextRange {
         kind: SyntaxKind;
@@ -643,8 +645,9 @@ declare namespace ts {
         questionToken?: QuestionToken;
         body?: Block | Expression;
     }
-    type FunctionLikeDeclaration = FunctionDeclaration | MethodDeclaration | ConstructorDeclaration | GetAccessorDeclaration | SetAccessorDeclaration | FunctionExpression | ArrowFunction;
-    type FunctionLike = FunctionLikeDeclaration | FunctionTypeNode | ConstructorTypeNode | IndexSignatureDeclaration | MethodSignature | ConstructSignatureDeclaration | CallSignatureDeclaration | JSDocFunctionType;
+    type FunctionLikeDeclaration = FunctionDeclaration | MethodDeclaration | GetAccessorDeclaration | SetAccessorDeclaration | ConstructorDeclaration | FunctionExpression | ArrowFunction;
+    /** @deprecated Use SignatureDeclaration */
+    type FunctionLike = SignatureDeclaration;
     interface FunctionDeclaration extends FunctionLikeDeclarationBase, DeclarationStatement {
         kind: SyntaxKind.FunctionDeclaration;
         name?: Identifier;
@@ -652,7 +655,7 @@ declare namespace ts {
     }
     interface MethodSignature extends SignatureDeclarationBase, TypeElement {
         kind: SyntaxKind.MethodSignature;
-        parent?: ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
+        parent?: ObjectTypeDeclaration;
         name: PropertyName;
     }
     interface MethodDeclaration extends FunctionLikeDeclarationBase, ClassElement, ObjectLiteralElement, JSDocContainer {
@@ -686,7 +689,7 @@ declare namespace ts {
     type AccessorDeclaration = GetAccessorDeclaration | SetAccessorDeclaration;
     interface IndexSignatureDeclaration extends SignatureDeclarationBase, ClassElement, TypeElement {
         kind: SyntaxKind.IndexSignature;
-        parent?: ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
+        parent?: ObjectTypeDeclaration;
     }
     interface TypeNode extends Node {
         _typeNodeBrand: any;
@@ -1078,11 +1081,13 @@ declare namespace ts {
         kind: SyntaxKind.JsxOpeningElement;
         parent?: JsxElement;
         tagName: JsxTagNameExpression;
+        typeArguments?: NodeArray<TypeNode>;
         attributes: JsxAttributes;
     }
     interface JsxSelfClosingElement extends PrimaryExpression {
         kind: SyntaxKind.JsxSelfClosingElement;
         tagName: JsxTagNameExpression;
+        typeArguments?: NodeArray<TypeNode>;
         attributes: JsxAttributes;
     }
     interface JsxFragment extends PrimaryExpression {
@@ -1261,6 +1266,7 @@ declare namespace ts {
         variableDeclaration?: VariableDeclaration;
         block: Block;
     }
+    type ObjectTypeDeclaration = ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
     type DeclarationWithTypeParameters = SignatureDeclaration | ClassLikeDeclaration | InterfaceDeclaration | TypeAliasDeclaration | JSDocTemplateTag;
     interface ClassLikeDeclarationBase extends NamedDeclaration, JSDocContainer {
         kind: SyntaxKind.ClassDeclaration | SyntaxKind.ClassExpression;
@@ -1553,7 +1559,7 @@ declare namespace ts {
         PreFinally = 2048,
         AfterFinally = 4096,
         Label = 12,
-        Condition = 96,
+        Condition = 96
     }
     interface FlowLock {
         locked?: boolean;
@@ -1725,7 +1731,7 @@ declare namespace ts {
     enum ExitStatus {
         Success = 0,
         DiagnosticsPresent_OutputsSkipped = 1,
-        DiagnosticsPresent_OutputsGenerated = 2,
+        DiagnosticsPresent_OutputsGenerated = 2
     }
     interface EmitResult {
         emitSkipped: boolean;
@@ -1750,9 +1756,9 @@ declare namespace ts {
         /** Note that the resulting nodes cannot be checked. */
         typeToTypeNode(type: Type, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): TypeNode;
         /** Note that the resulting nodes cannot be checked. */
-        signatureToSignatureDeclaration(signature: Signature, kind: SyntaxKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): SignatureDeclaration & {
+        signatureToSignatureDeclaration(signature: Signature, kind: SyntaxKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): (SignatureDeclaration & {
             typeArguments?: NodeArray<TypeNode>;
-        } | undefined;
+        }) | undefined;
         /** Note that the resulting nodes cannot be checked. */
         indexInfoToIndexSignatureDeclaration(indexInfo: IndexInfo, kind: IndexKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): IndexSignatureDeclaration | undefined;
         /** Note that the resulting nodes cannot be checked. */
@@ -1801,7 +1807,7 @@ declare namespace ts {
          */
         getResolvedSignature(node: CallLikeExpression, candidatesOutArray?: Signature[], argumentCount?: number): Signature;
         getSignatureFromDeclaration(declaration: SignatureDeclaration): Signature | undefined;
-        isImplementationOfOverload(node: FunctionLike): boolean | undefined;
+        isImplementationOfOverload(node: SignatureDeclaration): boolean | undefined;
         isUndefinedSymbol(symbol: Symbol): boolean;
         isArgumentsSymbol(symbol: Symbol): boolean;
         isUnknownSymbol(symbol: Symbol): boolean;
@@ -1811,7 +1817,7 @@ declare namespace ts {
         getAliasedSymbol(symbol: Symbol): Symbol;
         getExportsOfModule(moduleSymbol: Symbol): Symbol[];
         getAllAttributesTypeFromJsxOpeningLikeElement(elementNode: JsxOpeningLikeElement): Type | undefined;
-        getJsxIntrinsicTagNames(): Symbol[];
+        getJsxIntrinsicTagNamesAt(location: Node): Symbol[];
         isOptionalParameter(node: ParameterDeclaration): boolean;
         getAmbientModules(): Symbol[];
         tryGetMemberInModuleExports(memberName: string, moduleSymbol: Symbol): Symbol | undefined;
@@ -1847,7 +1853,7 @@ declare namespace ts {
         InObjectTypeLiteral = 4194304,
         InTypeAlias = 8388608,
         InInitialEntityName = 16777216,
-        InReverseMappedType = 33554432,
+        InReverseMappedType = 33554432
     }
     enum TypeFormatFlags {
         None = 0,
@@ -1870,14 +1876,14 @@ declare namespace ts {
         InFirstTypeArgument = 4194304,
         InTypeAlias = 8388608,
         /** @deprecated */ WriteOwnNameForAnyLike = 0,
-        NodeBuilderFlagsMask = 9469291,
+        NodeBuilderFlagsMask = 9469291
     }
     enum SymbolFormatFlags {
         None = 0,
         WriteTypeParametersOrArguments = 1,
         UseOnlyExternalAliasing = 2,
         AllowAnyNodeKind = 4,
-        UseAliasDefinedOutsideCurrentScope = 8,
+        UseAliasDefinedOutsideCurrentScope = 8
     }
     /**
      * @deprecated
@@ -1914,7 +1920,7 @@ declare namespace ts {
     }
     enum TypePredicateKind {
         This = 0,
-        Identifier = 1,
+        Identifier = 1
     }
     interface TypePredicateBase {
         kind: TypePredicateKind;
@@ -1960,28 +1966,28 @@ declare namespace ts {
         JSContainer = 67108864,
         Enum = 384,
         Variable = 3,
-        Value = 107455,
-        Type = 793064,
+        Value = 67216319,
+        Type = 67901928,
         Namespace = 1920,
         Module = 1536,
         Accessor = 98304,
-        FunctionScopedVariableExcludes = 107454,
-        BlockScopedVariableExcludes = 107455,
-        ParameterExcludes = 107455,
+        FunctionScopedVariableExcludes = 67216318,
+        BlockScopedVariableExcludes = 67216319,
+        ParameterExcludes = 67216319,
         PropertyExcludes = 0,
-        EnumMemberExcludes = 900095,
-        FunctionExcludes = 106927,
-        ClassExcludes = 899519,
-        InterfaceExcludes = 792968,
-        RegularEnumExcludes = 899327,
-        ConstEnumExcludes = 899967,
-        ValueModuleExcludes = 106639,
+        EnumMemberExcludes = 68008959,
+        FunctionExcludes = 67215791,
+        ClassExcludes = 68008383,
+        InterfaceExcludes = 67901832,
+        RegularEnumExcludes = 68008191,
+        ConstEnumExcludes = 68008831,
+        ValueModuleExcludes = 67215503,
         NamespaceModuleExcludes = 0,
-        MethodExcludes = 99263,
-        GetAccessorExcludes = 41919,
-        SetAccessorExcludes = 74687,
-        TypeParameterExcludes = 530920,
-        TypeAliasExcludes = 793064,
+        MethodExcludes = 67208127,
+        GetAccessorExcludes = 67150783,
+        SetAccessorExcludes = 67183551,
+        TypeParameterExcludes = 67639784,
+        TypeAliasExcludes = 67901928,
         AliasExcludes = 2097152,
         ModuleMember = 2623475,
         ExportHasLocal = 944,
@@ -1989,7 +1995,7 @@ declare namespace ts {
         HasMembers = 6240,
         BlockScoped = 418,
         PropertyOrAccessor = 98308,
-        ClassMember = 106500,
+        ClassMember = 106500
     }
     interface Symbol {
         flags: SymbolFlags;
@@ -2016,7 +2022,7 @@ declare namespace ts {
         Computed = "__computed",
         Resolving = "__resolving__",
         ExportEquals = "export=",
-        Default = "default",
+        Default = "default"
     }
     /**
      * This represents a string whose leading underscore have been escaped by adding extra leading underscores.
@@ -2091,7 +2097,7 @@ declare namespace ts {
         Instantiable = 7897088,
         StructuredOrInstantiable = 8355840,
         Narrowable = 142575359,
-        NotUnionOrUnit = 134283777,
+        NotUnionOrUnit = 134283777
     }
     type DestructuringPattern = BindingPattern | ObjectLiteralExpression | ArrayLiteralExpression;
     interface Type {
@@ -2132,7 +2138,7 @@ declare namespace ts {
         ReverseMapped = 2048,
         JsxAttributes = 4096,
         MarkerType = 8192,
-        ClassOrInterface = 3,
+        ClassOrInterface = 3
     }
     interface ObjectType extends Type {
         objectFlags: ObjectFlags;
@@ -2189,31 +2195,46 @@ declare namespace ts {
         indexType: Type;
         constraint?: Type;
     }
+    type TypeVariable = TypeParameter | IndexedAccessType;
     interface IndexType extends InstantiableType {
         type: InstantiableType | UnionOrIntersectionType;
     }
-    interface ConditionalType extends InstantiableType {
+    interface ConditionalRoot {
+        node: ConditionalTypeNode;
         checkType: Type;
         extendsType: Type;
         trueType: Type;
         falseType: Type;
+        isDistributive: boolean;
+        inferTypeParameters: TypeParameter[];
+        outerTypeParameters?: TypeParameter[];
+        instantiations?: Map<Type>;
+        aliasSymbol: Symbol;
+        aliasTypeArguments: Type[];
+    }
+    interface ConditionalType extends InstantiableType {
+        root: ConditionalRoot;
+        checkType: Type;
+        extendsType: Type;
+        resolvedTrueType?: Type;
+        resolvedFalseType?: Type;
     }
     interface SubstitutionType extends InstantiableType {
-        typeParameter: TypeParameter;
+        typeVariable: TypeVariable;
         substitute: Type;
     }
     enum SignatureKind {
         Call = 0,
-        Construct = 1,
+        Construct = 1
     }
     interface Signature {
-        declaration: SignatureDeclaration;
+        declaration?: SignatureDeclaration;
         typeParameters?: TypeParameter[];
         parameters: Symbol[];
     }
     enum IndexKind {
         String = 0,
-        Number = 1,
+        Number = 1
     }
     interface IndexInfo {
         type: Type;
@@ -2222,41 +2243,14 @@ declare namespace ts {
     }
     enum InferencePriority {
         NakedTypeVariable = 1,
-        MappedType = 2,
-        ReturnType = 4,
-        NoConstraints = 8,
-        AlwaysStrict = 16,
+        HomomorphicMappedType = 2,
+        MappedTypeConstraint = 4,
+        ReturnType = 8,
+        LiteralKeyof = 16,
+        NoConstraints = 32,
+        AlwaysStrict = 64,
+        PriorityImpliesCombination = 28
     }
-    interface InferenceInfo {
-        typeParameter: TypeParameter;
-        candidates: Type[];
-        contraCandidates: Type[];
-        inferredType: Type;
-        priority: InferencePriority;
-        topLevel: boolean;
-        isFixed: boolean;
-    }
-    enum InferenceFlags {
-        None = 0,
-        InferUnionTypes = 1,
-        NoDefault = 2,
-        AnyDefault = 4,
-    }
-    /**
-     * Ternary values are defined such that
-     * x & y is False if either x or y is False.
-     * x & y is Maybe if either x or y is Maybe, but neither x or y is False.
-     * x & y is True if both x and y are True.
-     * x | y is False if both x and y are False.
-     * x | y is Maybe if either x or y is Maybe, but neither x or y is True.
-     * x | y is True if either x or y is True.
-     */
-    enum Ternary {
-        False = 0,
-        Maybe = 1,
-        True = -1,
-    }
-    type TypeComparer = (s: Type, t: Type, reportErrors?: boolean) => Ternary;
     interface JsFileExtensionInfo {
         extension: string;
         isMixedContent: boolean;
@@ -2292,11 +2286,12 @@ declare namespace ts {
     enum DiagnosticCategory {
         Warning = 0,
         Error = 1,
-        Message = 2,
+        Suggestion = 2,
+        Message = 3
     }
     enum ModuleResolutionKind {
         Classic = 1,
-        NodeJs = 2,
+        NodeJs = 2
     }
     interface PluginImport {
         name: string;
@@ -2312,6 +2307,7 @@ declare namespace ts {
         charset?: string;
         checkJs?: boolean;
         declaration?: boolean;
+        declarationMap?: boolean;
         emitDeclarationOnly?: boolean;
         declarationDir?: string;
         disableSizeLimit?: boolean;
@@ -2390,17 +2386,17 @@ declare namespace ts {
         UMD = 3,
         System = 4,
         ES2015 = 5,
-        ESNext = 6,
+        ESNext = 6
     }
     enum JsxEmit {
         None = 0,
         Preserve = 1,
         React = 2,
-        ReactNative = 3,
+        ReactNative = 3
     }
     enum NewLineKind {
         CarriageReturnLineFeed = 0,
-        LineFeed = 1,
+        LineFeed = 1
     }
     interface LineAndCharacter {
         /** 0-based. */
@@ -2414,7 +2410,7 @@ declare namespace ts {
         TS = 3,
         TSX = 4,
         External = 5,
-        JSON = 6,
+        JSON = 6
     }
     enum ScriptTarget {
         ES3 = 0,
@@ -2424,11 +2420,11 @@ declare namespace ts {
         ES2017 = 4,
         ES2018 = 5,
         ESNext = 6,
-        Latest = 6,
+        Latest = 6
     }
     enum LanguageVariant {
         Standard = 0,
-        JSX = 1,
+        JSX = 1
     }
     /** Either a parsed command line or a parsed tsconfig.json */
     interface ParsedCommandLine {
@@ -2442,7 +2438,7 @@ declare namespace ts {
     }
     enum WatchDirectoryFlags {
         None = 0,
-        Recursive = 1,
+        Recursive = 1
     }
     interface ExpandResult {
         fileNames: string[];
@@ -2512,7 +2508,7 @@ declare namespace ts {
         Dts = ".d.ts",
         Js = ".js",
         Jsx = ".jsx",
-        Json = ".json",
+        Json = ".json"
     }
     interface ResolvedModuleWithFailedLookupLocations {
         readonly resolvedModule: ResolvedModuleFull | undefined;
@@ -2582,7 +2578,7 @@ declare namespace ts {
         NoHoisting = 2097152,
         HasEndOfDeclarationMarker = 4194304,
         Iterator = 8388608,
-        NoAsciiEscaping = 16777216,
+        NoAsciiEscaping = 16777216
     }
     interface EmitHelper {
         readonly name: string;
@@ -2595,7 +2591,7 @@ declare namespace ts {
         Expression = 1,
         IdentifierName = 2,
         MappedTypeParameter = 3,
-        Unspecified = 4,
+        Unspecified = 4
     }
     interface TransformationContext {
         /** Gets the compiler options supplied to the transformer. */
@@ -2762,6 +2758,7 @@ declare namespace ts {
         newLine?: NewLineKind;
         omitTrailingSemicolon?: boolean;
     }
+    /** @deprecated See comment on SymbolWriter */
     interface SymbolTracker {
         trackSymbol?(symbol: Symbol, enclosingDeclaration?: Node, meaning?: SymbolFlags): void;
         reportInaccessibleThisError?(): void;
@@ -2812,9 +2809,9 @@ declare namespace ts {
         SingleElement = 524288,
         Modifiers = 131328,
         HeritageClauses = 256,
-        SingleLineTypeLiteralMembers = 448,
-        MultiLineTypeLiteralMembers = 65,
-        TupleTypeElements = 336,
+        SingleLineTypeLiteralMembers = 384,
+        MultiLineTypeLiteralMembers = 16449,
+        TupleTypeElements = 272,
         UnionTypeConstituents = 260,
         IntersectionTypeConstituents = 264,
         ObjectBindingPatternElements = 262576,
@@ -2830,12 +2827,12 @@ declare namespace ts {
         VariableDeclarationList = 272,
         SingleLineFunctionBodyStatements = 384,
         MultiLineFunctionBodyStatements = 1,
-        ClassHeritageClauses = 256,
+        ClassHeritageClauses = 0,
         ClassMembers = 65,
         InterfaceMembers = 65,
         EnumMembers = 81,
         CaseBlockClauses = 65,
-        NamedImportsOrExportsElements = 432,
+        NamedImportsOrExportsElements = 262576,
         JsxElementOrFragmentChildren = 131072,
         JsxElementAttributes = 131328,
         CaseOrDefaultClauseStatements = 81985,
@@ -2845,11 +2842,11 @@ declare namespace ts {
         TypeArguments = 26896,
         TypeParameters = 26896,
         Parameters = 1296,
-        IndexSignatureParameters = 4432,
+        IndexSignatureParameters = 4432
     }
 }
 declare namespace ts {
-    const versionMajorMinor = "2.8";
+    const versionMajorMinor = "2.9";
     /** The version of the TypeScript compiler release */
     const version: string;
 }
@@ -2863,15 +2860,10 @@ declare namespace ts {
     enum FileWatcherEventKind {
         Created = 0,
         Changed = 1,
-        Deleted = 2,
+        Deleted = 2
     }
     type FileWatcherCallback = (fileName: string, eventKind: FileWatcherEventKind) => void;
     type DirectoryWatcherCallback = (fileName: string) => void;
-    interface WatchedFile {
-        fileName: string;
-        callback: FileWatcherCallback;
-        mtime?: Date;
-    }
     interface System {
         args: string[];
         newLine: string;
@@ -2906,6 +2898,8 @@ declare namespace ts {
         setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
         clearTimeout?(timeoutId: any): void;
         clearScreen?(): void;
+        base64decode?(input: string): string;
+        base64encode?(input: string): string;
     }
     interface FileWatcher {
         close(): void;
@@ -2932,8 +2926,8 @@ declare namespace ts {
         reScanTemplateToken(): SyntaxKind;
         scanJsxIdentifier(): SyntaxKind;
         scanJsxAttributeValue(): SyntaxKind;
-        reScanJsxToken(): SyntaxKind;
-        scanJsxToken(): SyntaxKind;
+        reScanJsxToken(): JsxTokenSyntaxKind;
+        scanJsxToken(): JsxTokenSyntaxKind;
         scanJSDocToken(): JsDocSyntaxKind;
         scan(): SyntaxKind;
         getText(): string;
@@ -2947,7 +2941,7 @@ declare namespace ts {
         tryScan<T>(callback: () => T): T;
     }
     function tokenToString(t: SyntaxKind): string | undefined;
-    function getPositionOfLineAndCharacter(sourceFile: SourceFile, line: number, character: number): number;
+    function getPositionOfLineAndCharacter(sourceFile: SourceFileLike, line: number, character: number): number;
     function getLineAndCharacterOfPosition(sourceFile: SourceFileLike, position: number): LineAndCharacter;
     function isWhiteSpaceLike(ch: number): boolean;
     /** Does not include line breaks. For that, see isWhiteSpaceLike. */
@@ -3066,7 +3060,7 @@ declare namespace ts {
      * Does not return tags for binding patterns, because JSDoc matches
      * parameters by name and binding patterns do not have a name.
      */
-    function getJSDocParameterTags(param: ParameterDeclaration): ReadonlyArray<JSDocParameterTag> | undefined;
+    function getJSDocParameterTags(param: ParameterDeclaration): ReadonlyArray<JSDocParameterTag>;
     /**
      * Return true if the node has JSDoc parameter tags.
      *
@@ -3104,9 +3098,9 @@ declare namespace ts {
      */
     function getJSDocReturnType(node: Node): TypeNode | undefined;
     /** Get all JSDoc tags related to a node, including those on parent nodes. */
-    function getJSDocTags(node: Node): ReadonlyArray<JSDocTag> | undefined;
+    function getJSDocTags(node: Node): ReadonlyArray<JSDocTag>;
     /** Gets all JSDoc tags of a specified kind, or undefined if not present. */
-    function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag> | undefined;
+    function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag>;
 }
 declare namespace ts {
     function isNumericLiteral(node: Node): node is NumericLiteral;
@@ -3260,6 +3254,7 @@ declare namespace ts {
     function isJSDocVariadicType(node: Node): node is JSDocVariadicType;
     function isJSDoc(node: Node): node is JSDoc;
     function isJSDocAugmentsTag(node: Node): node is JSDocAugmentsTag;
+    function isJSDocClassTag(node: Node): node is JSDocClassTag;
     function isJSDocParameterTag(node: Node): node is JSDocParameterTag;
     function isJSDocReturnTag(node: Node): node is JSDocReturnTag;
     function isJSDocTypeTag(node: Node): node is JSDocTypeTag;
@@ -3283,7 +3278,7 @@ declare namespace ts {
     function isEntityName(node: Node): node is EntityName;
     function isPropertyName(node: Node): node is PropertyName;
     function isBindingName(node: Node): node is BindingName;
-    function isFunctionLike(node: Node): node is FunctionLike;
+    function isFunctionLike(node: Node): node is SignatureDeclaration;
     function isClassElement(node: Node): node is ClassElement;
     function isClassLike(node: Node): node is ClassLikeDeclaration;
     function isAccessor(node: Node): node is AccessorDeclaration;
@@ -3301,7 +3296,8 @@ declare namespace ts {
     function isCallOrNewExpression(node: Node): node is CallExpression | NewExpression;
     function isTemplateLiteral(node: Node): node is TemplateLiteral;
     function isAssertionExpression(node: Node): node is AssertionExpression;
-    function isIterationStatement(node: Node, lookInLabeledStatements: boolean): node is IterationStatement;
+    function isIterationStatement(node: Node, lookInLabeledStatements: false): node is IterationStatement;
+    function isIterationStatement(node: Node, lookInLabeledStatements: boolean): node is IterationStatement | LabeledStatement;
     function isJsxOpeningLikeElement(node: Node): node is JsxOpeningLikeElement;
     function isCaseOrDefaultClause(node: Node): node is CaseOrDefaultClause;
     /** True if node is of a kind that may contain comment text. */
@@ -3398,6 +3394,8 @@ declare namespace ts {
     function createLoopVariable(): Identifier;
     /** Create a unique name based on the supplied text. */
     function createUniqueName(text: string): Identifier;
+    /** Create a unique name based on the supplied text. */
+    function createOptimisticUniqueName(text: string): Identifier;
     /** Create a unique name generated for a node. */
     function getGeneratedNameForNode(node: Node): Identifier;
     function createToken<TKind extends SyntaxKind>(token: TKind): Token<TKind>;
@@ -3406,6 +3404,8 @@ declare namespace ts {
     function createNull(): NullLiteral & Token<SyntaxKind.NullKeyword>;
     function createTrue(): BooleanLiteral & Token<SyntaxKind.TrueKeyword>;
     function createFalse(): BooleanLiteral & Token<SyntaxKind.FalseKeyword>;
+    function createModifier<T extends Modifier["kind"]>(kind: T): Token<T>;
+    function createModifiersFromModifierFlags(flags: ModifierFlags): Modifier[];
     function createQualifiedName(left: EntityName, right: string | Identifier): QualifiedName;
     function updateQualifiedName(node: QualifiedName, left: EntityName, right: Identifier): QualifiedName;
     function createComputedPropertyName(expression: Expression): ComputedPropertyName;
@@ -3606,7 +3606,7 @@ declare namespace ts {
     function updateNamespaceExportDeclaration(node: NamespaceExportDeclaration, name: Identifier): NamespaceExportDeclaration;
     function createImportEqualsDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
     function updateImportEqualsDeclaration(node: ImportEqualsDeclaration, decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-    function createImportDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier?: Expression): ImportDeclaration;
+    function createImportDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression): ImportDeclaration;
     function updateImportDeclaration(node: ImportDeclaration, decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression | undefined): ImportDeclaration;
     function createImportClause(name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
     function updateImportClause(node: ImportClause, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
@@ -3628,10 +3628,10 @@ declare namespace ts {
     function updateExternalModuleReference(node: ExternalModuleReference, expression: Expression): ExternalModuleReference;
     function createJsxElement(openingElement: JsxOpeningElement, children: ReadonlyArray<JsxChild>, closingElement: JsxClosingElement): JsxElement;
     function updateJsxElement(node: JsxElement, openingElement: JsxOpeningElement, children: ReadonlyArray<JsxChild>, closingElement: JsxClosingElement): JsxElement;
-    function createJsxSelfClosingElement(tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxSelfClosingElement;
-    function updateJsxSelfClosingElement(node: JsxSelfClosingElement, tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxSelfClosingElement;
-    function createJsxOpeningElement(tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxOpeningElement;
-    function updateJsxOpeningElement(node: JsxOpeningElement, tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxOpeningElement;
+    function createJsxSelfClosingElement(tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxSelfClosingElement;
+    function updateJsxSelfClosingElement(node: JsxSelfClosingElement, tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxSelfClosingElement;
+    function createJsxOpeningElement(tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxOpeningElement;
+    function updateJsxOpeningElement(node: JsxOpeningElement, tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxOpeningElement;
     function createJsxClosingElement(tagName: JsxTagNameExpression): JsxClosingElement;
     function updateJsxClosingElement(node: JsxClosingElement, tagName: JsxTagNameExpression): JsxClosingElement;
     function createJsxFragment(openingFragment: JsxOpeningFragment, children: ReadonlyArray<JsxChild>, closingFragment: JsxClosingFragment): JsxFragment;
@@ -3660,7 +3660,7 @@ declare namespace ts {
     function updateSpreadAssignment(node: SpreadAssignment, expression: Expression): SpreadAssignment;
     function createEnumMember(name: string | PropertyName, initializer?: Expression): EnumMember;
     function updateEnumMember(node: EnumMember, name: PropertyName, initializer: Expression | undefined): EnumMember;
-    function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>): SourceFile;
+    function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>, isDeclarationFile?: boolean, referencedFiles?: SourceFile["referencedFiles"], typeReferences?: SourceFile["typeReferenceDirectives"]): SourceFile;
     /**
      * Creates a shallow, memberwise clone of a node for mutation.
      */
@@ -4332,10 +4332,17 @@ declare namespace ts {
         isKnownTypesPackageName?(name: string): boolean;
         installPackage?(options: InstallPackageOptions): Promise<ApplyCodeActionCommandResult>;
     }
+    interface UserPreferences {
+        readonly quotePreference?: "double" | "single";
+        readonly includeCompletionsForModuleExports?: boolean;
+        readonly includeCompletionsWithInsertText?: boolean;
+        readonly importModuleSpecifierPreference?: "relative" | "non-relative";
+    }
     interface LanguageService {
         cleanupSemanticCache(): void;
         getSyntacticDiagnostics(fileName: string): Diagnostic[];
         getSemanticDiagnostics(fileName: string): Diagnostic[];
+        getSuggestionDiagnostics(fileName: string): Diagnostic[];
         getCompilerOptionsDiagnostics(): Diagnostic[];
         /**
          * @deprecated Use getEncodedSyntacticClassifications instead.
@@ -4348,7 +4355,7 @@ declare namespace ts {
         getEncodedSyntacticClassifications(fileName: string, span: TextSpan): Classifications;
         getEncodedSemanticClassifications(fileName: string, span: TextSpan): Classifications;
         getCompletionsAtPosition(fileName: string, position: number, options: GetCompletionsAtPositionOptions | undefined): CompletionInfo;
-        getCompletionEntryDetails(fileName: string, position: number, name: string, options: FormatCodeOptions | FormatCodeSettings | undefined, source: string | undefined): CompletionEntryDetails;
+        getCompletionEntryDetails(fileName: string, position: number, name: string, formatOptions: FormatCodeOptions | FormatCodeSettings | undefined, source: string | undefined, preferences: UserPreferences | undefined): CompletionEntryDetails;
         getCompletionEntrySymbol(fileName: string, position: number, name: string, source: string | undefined): Symbol;
         getQuickInfoAtPosition(fileName: string, position: number): QuickInfo;
         getNameOrDottedNameSpan(fileName: string, startPos: number, endPos: number): TextSpan;
@@ -4378,8 +4385,8 @@ declare namespace ts {
         getDocCommentTemplateAtPosition(fileName: string, position: number): TextInsertion;
         isValidBraceCompletionAtPosition(fileName: string, position: number, openingBrace: number): boolean;
         getSpanOfEnclosingComment(fileName: string, position: number, onlyMultiLine: boolean): TextSpan;
-        getCodeFixesAtPosition(fileName: string, start: number, end: number, errorCodes: ReadonlyArray<number>, formatOptions: FormatCodeSettings): ReadonlyArray<CodeFixAction>;
-        getCombinedCodeFix(scope: CombinedCodeFixScope, fixId: {}, formatOptions: FormatCodeSettings): CombinedCodeActions;
+        getCodeFixesAtPosition(fileName: string, start: number, end: number, errorCodes: ReadonlyArray<number>, formatOptions: FormatCodeSettings, preferences: UserPreferences): ReadonlyArray<CodeFixAction>;
+        getCombinedCodeFix(scope: CombinedCodeFixScope, fixId: {}, formatOptions: FormatCodeSettings, preferences: UserPreferences): CombinedCodeActions;
         applyCodeActionCommand(action: CodeActionCommand): Promise<ApplyCodeActionCommandResult>;
         applyCodeActionCommand(action: CodeActionCommand[]): Promise<ApplyCodeActionCommandResult[]>;
         applyCodeActionCommand(action: CodeActionCommand | CodeActionCommand[]): Promise<ApplyCodeActionCommandResult | ApplyCodeActionCommandResult[]>;
@@ -4389,9 +4396,9 @@ declare namespace ts {
         applyCodeActionCommand(fileName: string, action: CodeActionCommand[]): Promise<ApplyCodeActionCommandResult[]>;
         /** @deprecated `fileName` will be ignored */
         applyCodeActionCommand(fileName: string, action: CodeActionCommand | CodeActionCommand[]): Promise<ApplyCodeActionCommandResult | ApplyCodeActionCommandResult[]>;
-        getApplicableRefactors(fileName: string, positionOrRaneg: number | TextRange): ApplicableRefactorInfo[];
-        getEditsForRefactor(fileName: string, formatOptions: FormatCodeSettings, positionOrRange: number | TextRange, refactorName: string, actionName: string): RefactorEditInfo | undefined;
-        organizeImports(scope: OrganizeImportsScope, formatOptions: FormatCodeSettings): ReadonlyArray<FileTextChanges>;
+        getApplicableRefactors(fileName: string, positionOrRaneg: number | TextRange, preferences: UserPreferences | undefined): ApplicableRefactorInfo[];
+        getEditsForRefactor(fileName: string, formatOptions: FormatCodeSettings, positionOrRange: number | TextRange, refactorName: string, actionName: string, preferences: UserPreferences | undefined): RefactorEditInfo | undefined;
+        organizeImports(scope: OrganizeImportsScope, formatOptions: FormatCodeSettings, preferences: UserPreferences | undefined): ReadonlyArray<FileTextChanges>;
         getEmitOutput(fileName: string, emitOnlyDtsFiles?: boolean): EmitOutput;
         getProgram(): Program;
         dispose(): void;
@@ -4401,9 +4408,12 @@ declare namespace ts {
         fileName: string;
     }
     type OrganizeImportsScope = CombinedCodeFixScope;
-    interface GetCompletionsAtPositionOptions {
-        includeExternalModuleExports: boolean;
-        includeInsertTextCompletions: boolean;
+    /** @deprecated Use UserPreferences */
+    interface GetCompletionsAtPositionOptions extends UserPreferences {
+        /** @deprecated Use includeCompletionsForModuleExports */
+        includeExternalModuleExports?: boolean;
+        /** @deprecated Use includeCompletionsWithInsertText */
+        includeInsertTextCompletions?: boolean;
     }
     interface ApplyCodeActionCommandResult {
         successMessage: string;
@@ -4484,6 +4494,7 @@ declare namespace ts {
          * This may be omitted to indicate that the code fix can't be applied in a group.
          */
         fixId?: {};
+        fixAllDescription?: string;
     }
     interface CombinedCodeActions {
         changes: ReadonlyArray<FileTextChanges>;
@@ -4569,7 +4580,7 @@ declare namespace ts {
         none = "none",
         definition = "definition",
         reference = "reference",
-        writtenReference = "writtenReference",
+        writtenReference = "writtenReference"
     }
     interface HighlightSpan {
         fileName?: string;
@@ -4591,7 +4602,7 @@ declare namespace ts {
     enum IndentStyle {
         None = 0,
         Block = 1,
-        Smart = 2,
+        Smart = 2
     }
     interface EditorOptions {
         BaseIndentSize?: number;
@@ -4686,7 +4697,7 @@ declare namespace ts {
         typeParameterName = 18,
         enumMemberName = 19,
         functionName = 20,
-        regularExpressionLiteral = 21,
+        regularExpressionLiteral = 21
     }
     interface SymbolDisplayPart {
         text: string;
@@ -4746,7 +4757,7 @@ declare namespace ts {
         argumentCount: number;
     }
     interface CompletionInfo {
-        /** Not true for all glboal completions. This will be true if the enclosing scope matches a few syntax kinds. See `isGlobalCompletionScope`. */
+        /** Not true for all glboal completions. This will be true if the enclosing scope matches a few syntax kinds. See `isSnippetScope`. */
         isGlobalCompletion: boolean;
         isMemberCompletion: boolean;
         /**
@@ -4797,7 +4808,7 @@ declare namespace ts {
     enum OutputFileType {
         JavaScript = 0,
         SourceMap = 1,
-        Declaration = 2,
+        Declaration = 2
     }
     enum EndOfLineState {
         None = 0,
@@ -4806,7 +4817,7 @@ declare namespace ts {
         InDoubleQuoteStringLiteral = 3,
         InTemplateHeadOrNoSubstitutionTemplate = 4,
         InTemplateMiddleOrTail = 5,
-        InTemplateSubstitutionPosition = 6,
+        InTemplateSubstitutionPosition = 6
     }
     enum TokenClass {
         Punctuation = 0,
@@ -4817,7 +4828,7 @@ declare namespace ts {
         Identifier = 5,
         NumberLiteral = 6,
         StringLiteral = 7,
-        RegExpLiteral = 8,
+        RegExpLiteral = 8
     }
     interface ClassificationResult {
         finalLexState: EndOfLineState;
@@ -4916,7 +4927,7 @@ declare namespace ts {
         /**
          * <JsxTagName attribute1 attribute2={0} />
          */
-        jsxAttribute = "JSX attribute",
+        jsxAttribute = "JSX attribute"
     }
     enum ScriptElementKindModifier {
         none = "",
@@ -4927,7 +4938,7 @@ declare namespace ts {
         ambientModifier = "declare",
         staticModifier = "static",
         abstractModifier = "abstract",
-        optionalModifier = "optional",
+        optionalModifier = "optional"
     }
     enum ClassificationTypeNames {
         comment = "comment",
@@ -4952,7 +4963,7 @@ declare namespace ts {
         jsxSelfClosingTagName = "jsx self closing tag name",
         jsxAttribute = "jsx attribute",
         jsxText = "jsx text",
-        jsxAttributeStringLiteralValue = "jsx attribute string literal value",
+        jsxAttributeStringLiteralValue = "jsx attribute string literal value"
     }
     enum ClassificationType {
         comment = 1,
@@ -4978,7 +4989,7 @@ declare namespace ts {
         jsxSelfClosingTagName = 21,
         jsxAttribute = 22,
         jsxText = 23,
-        jsxAttributeStringLiteralValue = 24,
+        jsxAttributeStringLiteralValue = 24
     }
 }
 declare namespace ts {
@@ -5072,7 +5083,7 @@ declare namespace ts {
 }
 declare namespace ts {
     /** The version of the language service API */
-    const servicesVersion = "0.7";
+    const servicesVersion = "0.8";
     function toEditorSettings(options: EditorOptions | EditorSettings): EditorSettings;
     function displayPartsToString(displayParts: SymbolDisplayPart[]): string;
     function getDefaultCompilerOptions(): CompilerOptions;

lib/typescriptServices.d.ts

@@ -59,7 +59,8 @@ declare namespace ts {
         pos: number;
         end: number;
     }
-    type JsDocSyntaxKind = SyntaxKind.EndOfFileToken | SyntaxKind.WhitespaceTrivia | SyntaxKind.AtToken | SyntaxKind.NewLineTrivia | SyntaxKind.AsteriskToken | SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.LessThanToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.EqualsToken | SyntaxKind.CommaToken | SyntaxKind.DotToken | SyntaxKind.Identifier | SyntaxKind.Unknown;
+    type JsDocSyntaxKind = SyntaxKind.EndOfFileToken | SyntaxKind.WhitespaceTrivia | SyntaxKind.AtToken | SyntaxKind.NewLineTrivia | SyntaxKind.AsteriskToken | SyntaxKind.OpenBraceToken | SyntaxKind.CloseBraceToken | SyntaxKind.LessThanToken | SyntaxKind.OpenBracketToken | SyntaxKind.CloseBracketToken | SyntaxKind.EqualsToken | SyntaxKind.CommaToken | SyntaxKind.DotToken | SyntaxKind.Identifier | SyntaxKind.NoSubstitutionTemplateLiteral | SyntaxKind.Unknown;
+    type JsxTokenSyntaxKind = SyntaxKind.LessThanSlashToken | SyntaxKind.EndOfFileToken | SyntaxKind.ConflictMarkerTrivia | SyntaxKind.JsxText | SyntaxKind.JsxTextAllWhiteSpaces | SyntaxKind.OpenBraceToken | SyntaxKind.LessThanToken;
     enum SyntaxKind {
         Unknown = 0,
         EndOfFileToken = 1,
@@ -389,7 +390,7 @@ declare namespace ts {
         FirstJSDocNode = 274,
         LastJSDocNode = 292,
         FirstJSDocTagNode = 284,
-        LastJSDocTagNode = 292,
+        LastJSDocTagNode = 292
     }
     enum NodeFlags {
         None = 0,
@@ -417,7 +418,7 @@ declare namespace ts {
         ReachabilityCheckFlags = 384,
         ReachabilityAndEmitFlags = 1408,
         ContextFlags = 6387712,
-        TypeExcludesFlags = 20480,
+        TypeExcludesFlags = 20480
     }
     enum ModifierFlags {
         None = 0,
@@ -438,6 +439,7 @@ declare namespace ts {
         NonPublicAccessibilityModifier = 24,
         TypeScriptModifier = 2270,
         ExportDefault = 513,
+        All = 3071
     }
     enum JsxFlags {
         None = 0,
@@ -445,7 +447,7 @@ declare namespace ts {
         IntrinsicNamedElement = 1,
         /** An element inferred from the string index signature of the JSX.IntrinsicElements interface */
         IntrinsicIndexedElement = 2,
-        IntrinsicElement = 3,
+        IntrinsicElement = 3
     }
     interface Node extends TextRange {
         kind: SyntaxKind;
@@ -643,8 +645,9 @@ declare namespace ts {
         questionToken?: QuestionToken;
         body?: Block | Expression;
     }
-    type FunctionLikeDeclaration = FunctionDeclaration | MethodDeclaration | ConstructorDeclaration | GetAccessorDeclaration | SetAccessorDeclaration | FunctionExpression | ArrowFunction;
-    type FunctionLike = FunctionLikeDeclaration | FunctionTypeNode | ConstructorTypeNode | IndexSignatureDeclaration | MethodSignature | ConstructSignatureDeclaration | CallSignatureDeclaration | JSDocFunctionType;
+    type FunctionLikeDeclaration = FunctionDeclaration | MethodDeclaration | GetAccessorDeclaration | SetAccessorDeclaration | ConstructorDeclaration | FunctionExpression | ArrowFunction;
+    /** @deprecated Use SignatureDeclaration */
+    type FunctionLike = SignatureDeclaration;
     interface FunctionDeclaration extends FunctionLikeDeclarationBase, DeclarationStatement {
         kind: SyntaxKind.FunctionDeclaration;
         name?: Identifier;
@@ -652,7 +655,7 @@ declare namespace ts {
     }
     interface MethodSignature extends SignatureDeclarationBase, TypeElement {
         kind: SyntaxKind.MethodSignature;
-        parent?: ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
+        parent?: ObjectTypeDeclaration;
         name: PropertyName;
     }
     interface MethodDeclaration extends FunctionLikeDeclarationBase, ClassElement, ObjectLiteralElement, JSDocContainer {
@@ -686,7 +689,7 @@ declare namespace ts {
     type AccessorDeclaration = GetAccessorDeclaration | SetAccessorDeclaration;
     interface IndexSignatureDeclaration extends SignatureDeclarationBase, ClassElement, TypeElement {
         kind: SyntaxKind.IndexSignature;
-        parent?: ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
+        parent?: ObjectTypeDeclaration;
     }
     interface TypeNode extends Node {
         _typeNodeBrand: any;
@@ -1078,11 +1081,13 @@ declare namespace ts {
         kind: SyntaxKind.JsxOpeningElement;
         parent?: JsxElement;
         tagName: JsxTagNameExpression;
+        typeArguments?: NodeArray<TypeNode>;
         attributes: JsxAttributes;
     }
     interface JsxSelfClosingElement extends PrimaryExpression {
         kind: SyntaxKind.JsxSelfClosingElement;
         tagName: JsxTagNameExpression;
+        typeArguments?: NodeArray<TypeNode>;
         attributes: JsxAttributes;
     }
     interface JsxFragment extends PrimaryExpression {
@@ -1261,6 +1266,7 @@ declare namespace ts {
         variableDeclaration?: VariableDeclaration;
         block: Block;
     }
+    type ObjectTypeDeclaration = ClassLikeDeclaration | InterfaceDeclaration | TypeLiteralNode;
     type DeclarationWithTypeParameters = SignatureDeclaration | ClassLikeDeclaration | InterfaceDeclaration | TypeAliasDeclaration | JSDocTemplateTag;
     interface ClassLikeDeclarationBase extends NamedDeclaration, JSDocContainer {
         kind: SyntaxKind.ClassDeclaration | SyntaxKind.ClassExpression;
@@ -1553,7 +1559,7 @@ declare namespace ts {
         PreFinally = 2048,
         AfterFinally = 4096,
         Label = 12,
-        Condition = 96,
+        Condition = 96
     }
     interface FlowLock {
         locked?: boolean;
@@ -1725,7 +1731,7 @@ declare namespace ts {
     enum ExitStatus {
         Success = 0,
         DiagnosticsPresent_OutputsSkipped = 1,
-        DiagnosticsPresent_OutputsGenerated = 2,
+        DiagnosticsPresent_OutputsGenerated = 2
     }
     interface EmitResult {
         emitSkipped: boolean;
@@ -1750,9 +1756,9 @@ declare namespace ts {
         /** Note that the resulting nodes cannot be checked. */
         typeToTypeNode(type: Type, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): TypeNode;
         /** Note that the resulting nodes cannot be checked. */
-        signatureToSignatureDeclaration(signature: Signature, kind: SyntaxKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): SignatureDeclaration & {
+        signatureToSignatureDeclaration(signature: Signature, kind: SyntaxKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): (SignatureDeclaration & {
             typeArguments?: NodeArray<TypeNode>;
-        } | undefined;
+        }) | undefined;
         /** Note that the resulting nodes cannot be checked. */
         indexInfoToIndexSignatureDeclaration(indexInfo: IndexInfo, kind: IndexKind, enclosingDeclaration?: Node, flags?: NodeBuilderFlags): IndexSignatureDeclaration | undefined;
         /** Note that the resulting nodes cannot be checked. */
@@ -1801,7 +1807,7 @@ declare namespace ts {
          */
         getResolvedSignature(node: CallLikeExpression, candidatesOutArray?: Signature[], argumentCount?: number): Signature;
         getSignatureFromDeclaration(declaration: SignatureDeclaration): Signature | undefined;
-        isImplementationOfOverload(node: FunctionLike): boolean | undefined;
+        isImplementationOfOverload(node: SignatureDeclaration): boolean | undefined;
         isUndefinedSymbol(symbol: Symbol): boolean;
         isArgumentsSymbol(symbol: Symbol): boolean;
         isUnknownSymbol(symbol: Symbol): boolean;
@@ -1811,7 +1817,7 @@ declare namespace ts {
         getAliasedSymbol(symbol: Symbol): Symbol;
         getExportsOfModule(moduleSymbol: Symbol): Symbol[];
         getAllAttributesTypeFromJsxOpeningLikeElement(elementNode: JsxOpeningLikeElement): Type | undefined;
-        getJsxIntrinsicTagNames(): Symbol[];
+        getJsxIntrinsicTagNamesAt(location: Node): Symbol[];
         isOptionalParameter(node: ParameterDeclaration): boolean;
         getAmbientModules(): Symbol[];
         tryGetMemberInModuleExports(memberName: string, moduleSymbol: Symbol): Symbol | undefined;
@@ -1847,7 +1853,7 @@ declare namespace ts {
         InObjectTypeLiteral = 4194304,
         InTypeAlias = 8388608,
         InInitialEntityName = 16777216,
-        InReverseMappedType = 33554432,
+        InReverseMappedType = 33554432
     }
     enum TypeFormatFlags {
         None = 0,
@@ -1870,14 +1876,14 @@ declare namespace ts {
         InFirstTypeArgument = 4194304,
         InTypeAlias = 8388608,
         /** @deprecated */ WriteOwnNameForAnyLike = 0,
-        NodeBuilderFlagsMask = 9469291,
+        NodeBuilderFlagsMask = 9469291
     }
     enum SymbolFormatFlags {
         None = 0,
         WriteTypeParametersOrArguments = 1,
         UseOnlyExternalAliasing = 2,
         AllowAnyNodeKind = 4,
-        UseAliasDefinedOutsideCurrentScope = 8,
+        UseAliasDefinedOutsideCurrentScope = 8
     }
     /**
      * @deprecated
@@ -1914,7 +1920,7 @@ declare namespace ts {
     }
     enum TypePredicateKind {
         This = 0,
-        Identifier = 1,
+        Identifier = 1
     }
     interface TypePredicateBase {
         kind: TypePredicateKind;
@@ -1960,28 +1966,28 @@ declare namespace ts {
         JSContainer = 67108864,
         Enum = 384,
         Variable = 3,
-        Value = 107455,
-        Type = 793064,
+        Value = 67216319,
+        Type = 67901928,
         Namespace = 1920,
         Module = 1536,
         Accessor = 98304,
-        FunctionScopedVariableExcludes = 107454,
-        BlockScopedVariableExcludes = 107455,
-        ParameterExcludes = 107455,
+        FunctionScopedVariableExcludes = 67216318,
+        BlockScopedVariableExcludes = 67216319,
+        ParameterExcludes = 67216319,
         PropertyExcludes = 0,
-        EnumMemberExcludes = 900095,
-        FunctionExcludes = 106927,
-        ClassExcludes = 899519,
-        InterfaceExcludes = 792968,
-        RegularEnumExcludes = 899327,
-        ConstEnumExcludes = 899967,
-        ValueModuleExcludes = 106639,
+        EnumMemberExcludes = 68008959,
+        FunctionExcludes = 67215791,
+        ClassExcludes = 68008383,
+        InterfaceExcludes = 67901832,
+        RegularEnumExcludes = 68008191,
+        ConstEnumExcludes = 68008831,
+        ValueModuleExcludes = 67215503,
         NamespaceModuleExcludes = 0,
-        MethodExcludes = 99263,
-        GetAccessorExcludes = 41919,
-        SetAccessorExcludes = 74687,
-        TypeParameterExcludes = 530920,
-        TypeAliasExcludes = 793064,
+        MethodExcludes = 67208127,
+        GetAccessorExcludes = 67150783,
+        SetAccessorExcludes = 67183551,
+        TypeParameterExcludes = 67639784,
+        TypeAliasExcludes = 67901928,
         AliasExcludes = 2097152,
         ModuleMember = 2623475,
         ExportHasLocal = 944,
@@ -1989,7 +1995,7 @@ declare namespace ts {
         HasMembers = 6240,
         BlockScoped = 418,
         PropertyOrAccessor = 98308,
-        ClassMember = 106500,
+        ClassMember = 106500
     }
     interface Symbol {
         flags: SymbolFlags;
@@ -2016,7 +2022,7 @@ declare namespace ts {
         Computed = "__computed",
         Resolving = "__resolving__",
         ExportEquals = "export=",
-        Default = "default",
+        Default = "default"
     }
     /**
      * This represents a string whose leading underscore have been escaped by adding extra leading underscores.
@@ -2091,7 +2097,7 @@ declare namespace ts {
         Instantiable = 7897088,
         StructuredOrInstantiable = 8355840,
         Narrowable = 142575359,
-        NotUnionOrUnit = 134283777,
+        NotUnionOrUnit = 134283777
     }
     type DestructuringPattern = BindingPattern | ObjectLiteralExpression | ArrayLiteralExpression;
     interface Type {
@@ -2132,7 +2138,7 @@ declare namespace ts {
         ReverseMapped = 2048,
         JsxAttributes = 4096,
         MarkerType = 8192,
-        ClassOrInterface = 3,
+        ClassOrInterface = 3
     }
     interface ObjectType extends Type {
         objectFlags: ObjectFlags;
@@ -2189,31 +2195,46 @@ declare namespace ts {
         indexType: Type;
         constraint?: Type;
     }
+    type TypeVariable = TypeParameter | IndexedAccessType;
     interface IndexType extends InstantiableType {
         type: InstantiableType | UnionOrIntersectionType;
     }
-    interface ConditionalType extends InstantiableType {
+    interface ConditionalRoot {
+        node: ConditionalTypeNode;
         checkType: Type;
         extendsType: Type;
         trueType: Type;
         falseType: Type;
+        isDistributive: boolean;
+        inferTypeParameters: TypeParameter[];
+        outerTypeParameters?: TypeParameter[];
+        instantiations?: Map<Type>;
+        aliasSymbol: Symbol;
+        aliasTypeArguments: Type[];
+    }
+    interface ConditionalType extends InstantiableType {
+        root: ConditionalRoot;
+        checkType: Type;
+        extendsType: Type;
+        resolvedTrueType?: Type;
+        resolvedFalseType?: Type;
     }
     interface SubstitutionType extends InstantiableType {
-        typeParameter: TypeParameter;
+        typeVariable: TypeVariable;
         substitute: Type;
     }
     enum SignatureKind {
         Call = 0,
-        Construct = 1,
+        Construct = 1
     }
     interface Signature {
-        declaration: SignatureDeclaration;
+        declaration?: SignatureDeclaration;
         typeParameters?: TypeParameter[];
         parameters: Symbol[];
     }
     enum IndexKind {
         String = 0,
-        Number = 1,
+        Number = 1
     }
     interface IndexInfo {
         type: Type;
@@ -2222,41 +2243,14 @@ declare namespace ts {
     }
     enum InferencePriority {
         NakedTypeVariable = 1,
-        MappedType = 2,
-        ReturnType = 4,
-        NoConstraints = 8,
-        AlwaysStrict = 16,
+        HomomorphicMappedType = 2,
+        MappedTypeConstraint = 4,
+        ReturnType = 8,
+        LiteralKeyof = 16,
+        NoConstraints = 32,
+        AlwaysStrict = 64,
+        PriorityImpliesCombination = 28
     }
-    interface InferenceInfo {
-        typeParameter: TypeParameter;
-        candidates: Type[];
-        contraCandidates: Type[];
-        inferredType: Type;
-        priority: InferencePriority;
-        topLevel: boolean;
-        isFixed: boolean;
-    }
-    enum InferenceFlags {
-        None = 0,
-        InferUnionTypes = 1,
-        NoDefault = 2,
-        AnyDefault = 4,
-    }
-    /**
-     * Ternary values are defined such that
-     * x & y is False if either x or y is False.
-     * x & y is Maybe if either x or y is Maybe, but neither x or y is False.
-     * x & y is True if both x and y are True.
-     * x | y is False if both x and y are False.
-     * x | y is Maybe if either x or y is Maybe, but neither x or y is True.
-     * x | y is True if either x or y is True.
-     */
-    enum Ternary {
-        False = 0,
-        Maybe = 1,
-        True = -1,
-    }
-    type TypeComparer = (s: Type, t: Type, reportErrors?: boolean) => Ternary;
     interface JsFileExtensionInfo {
         extension: string;
         isMixedContent: boolean;
@@ -2292,11 +2286,12 @@ declare namespace ts {
     enum DiagnosticCategory {
         Warning = 0,
         Error = 1,
-        Message = 2,
+        Suggestion = 2,
+        Message = 3
     }
     enum ModuleResolutionKind {
         Classic = 1,
-        NodeJs = 2,
+        NodeJs = 2
     }
     interface PluginImport {
         name: string;
@@ -2312,6 +2307,7 @@ declare namespace ts {
         charset?: string;
         checkJs?: boolean;
         declaration?: boolean;
+        declarationMap?: boolean;
         emitDeclarationOnly?: boolean;
         declarationDir?: string;
         disableSizeLimit?: boolean;
@@ -2390,17 +2386,17 @@ declare namespace ts {
         UMD = 3,
         System = 4,
         ES2015 = 5,
-        ESNext = 6,
+        ESNext = 6
     }
     enum JsxEmit {
         None = 0,
         Preserve = 1,
         React = 2,
-        ReactNative = 3,
+        ReactNative = 3
     }
     enum NewLineKind {
         CarriageReturnLineFeed = 0,
-        LineFeed = 1,
+        LineFeed = 1
     }
     interface LineAndCharacter {
         /** 0-based. */
@@ -2414,7 +2410,7 @@ declare namespace ts {
         TS = 3,
         TSX = 4,
         External = 5,
-        JSON = 6,
+        JSON = 6
     }
     enum ScriptTarget {
         ES3 = 0,
@@ -2424,11 +2420,11 @@ declare namespace ts {
         ES2017 = 4,
         ES2018 = 5,
         ESNext = 6,
-        Latest = 6,
+        Latest = 6
     }
     enum LanguageVariant {
         Standard = 0,
-        JSX = 1,
+        JSX = 1
     }
     /** Either a parsed command line or a parsed tsconfig.json */
     interface ParsedCommandLine {
@@ -2442,7 +2438,7 @@ declare namespace ts {
     }
     enum WatchDirectoryFlags {
         None = 0,
-        Recursive = 1,
+        Recursive = 1
     }
     interface ExpandResult {
         fileNames: string[];
@@ -2512,7 +2508,7 @@ declare namespace ts {
         Dts = ".d.ts",
         Js = ".js",
         Jsx = ".jsx",
-        Json = ".json",
+        Json = ".json"
     }
     interface ResolvedModuleWithFailedLookupLocations {
         readonly resolvedModule: ResolvedModuleFull | undefined;
@@ -2582,7 +2578,7 @@ declare namespace ts {
         NoHoisting = 2097152,
         HasEndOfDeclarationMarker = 4194304,
         Iterator = 8388608,
-        NoAsciiEscaping = 16777216,
+        NoAsciiEscaping = 16777216
     }
     interface EmitHelper {
         readonly name: string;
@@ -2595,7 +2591,7 @@ declare namespace ts {
         Expression = 1,
         IdentifierName = 2,
         MappedTypeParameter = 3,
-        Unspecified = 4,
+        Unspecified = 4
     }
     interface TransformationContext {
         /** Gets the compiler options supplied to the transformer. */
@@ -2762,6 +2758,7 @@ declare namespace ts {
         newLine?: NewLineKind;
         omitTrailingSemicolon?: boolean;
     }
+    /** @deprecated See comment on SymbolWriter */
     interface SymbolTracker {
         trackSymbol?(symbol: Symbol, enclosingDeclaration?: Node, meaning?: SymbolFlags): void;
         reportInaccessibleThisError?(): void;
@@ -2812,9 +2809,9 @@ declare namespace ts {
         SingleElement = 524288,
         Modifiers = 131328,
         HeritageClauses = 256,
-        SingleLineTypeLiteralMembers = 448,
-        MultiLineTypeLiteralMembers = 65,
-        TupleTypeElements = 336,
+        SingleLineTypeLiteralMembers = 384,
+        MultiLineTypeLiteralMembers = 16449,
+        TupleTypeElements = 272,
         UnionTypeConstituents = 260,
         IntersectionTypeConstituents = 264,
         ObjectBindingPatternElements = 262576,
@@ -2830,12 +2827,12 @@ declare namespace ts {
         VariableDeclarationList = 272,
         SingleLineFunctionBodyStatements = 384,
         MultiLineFunctionBodyStatements = 1,
-        ClassHeritageClauses = 256,
+        ClassHeritageClauses = 0,
         ClassMembers = 65,
         InterfaceMembers = 65,
         EnumMembers = 81,
         CaseBlockClauses = 65,
-        NamedImportsOrExportsElements = 432,
+        NamedImportsOrExportsElements = 262576,
         JsxElementOrFragmentChildren = 131072,
         JsxElementAttributes = 131328,
         CaseOrDefaultClauseStatements = 81985,
@@ -2845,11 +2842,11 @@ declare namespace ts {
         TypeArguments = 26896,
         TypeParameters = 26896,
         Parameters = 1296,
-        IndexSignatureParameters = 4432,
+        IndexSignatureParameters = 4432
     }
 }
 declare namespace ts {
-    const versionMajorMinor = "2.8";
+    const versionMajorMinor = "2.9";
     /** The version of the TypeScript compiler release */
     const version: string;
 }
@@ -2863,15 +2860,10 @@ declare namespace ts {
     enum FileWatcherEventKind {
         Created = 0,
         Changed = 1,
-        Deleted = 2,
+        Deleted = 2
     }
     type FileWatcherCallback = (fileName: string, eventKind: FileWatcherEventKind) => void;
     type DirectoryWatcherCallback = (fileName: string) => void;
-    interface WatchedFile {
-        fileName: string;
-        callback: FileWatcherCallback;
-        mtime?: Date;
-    }
     interface System {
         args: string[];
         newLine: string;
@@ -2906,6 +2898,8 @@ declare namespace ts {
         setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
         clearTimeout?(timeoutId: any): void;
         clearScreen?(): void;
+        base64decode?(input: string): string;
+        base64encode?(input: string): string;
     }
     interface FileWatcher {
         close(): void;
@@ -2932,8 +2926,8 @@ declare namespace ts {
         reScanTemplateToken(): SyntaxKind;
         scanJsxIdentifier(): SyntaxKind;
         scanJsxAttributeValue(): SyntaxKind;
-        reScanJsxToken(): SyntaxKind;
-        scanJsxToken(): SyntaxKind;
+        reScanJsxToken(): JsxTokenSyntaxKind;
+        scanJsxToken(): JsxTokenSyntaxKind;
         scanJSDocToken(): JsDocSyntaxKind;
         scan(): SyntaxKind;
         getText(): string;
@@ -2947,7 +2941,7 @@ declare namespace ts {
         tryScan<T>(callback: () => T): T;
     }
     function tokenToString(t: SyntaxKind): string | undefined;
-    function getPositionOfLineAndCharacter(sourceFile: SourceFile, line: number, character: number): number;
+    function getPositionOfLineAndCharacter(sourceFile: SourceFileLike, line: number, character: number): number;
     function getLineAndCharacterOfPosition(sourceFile: SourceFileLike, position: number): LineAndCharacter;
     function isWhiteSpaceLike(ch: number): boolean;
     /** Does not include line breaks. For that, see isWhiteSpaceLike. */
@@ -3066,7 +3060,7 @@ declare namespace ts {
      * Does not return tags for binding patterns, because JSDoc matches
      * parameters by name and binding patterns do not have a name.
      */
-    function getJSDocParameterTags(param: ParameterDeclaration): ReadonlyArray<JSDocParameterTag> | undefined;
+    function getJSDocParameterTags(param: ParameterDeclaration): ReadonlyArray<JSDocParameterTag>;
     /**
      * Return true if the node has JSDoc parameter tags.
      *
@@ -3104,9 +3098,9 @@ declare namespace ts {
      */
     function getJSDocReturnType(node: Node): TypeNode | undefined;
     /** Get all JSDoc tags related to a node, including those on parent nodes. */
-    function getJSDocTags(node: Node): ReadonlyArray<JSDocTag> | undefined;
+    function getJSDocTags(node: Node): ReadonlyArray<JSDocTag>;
     /** Gets all JSDoc tags of a specified kind, or undefined if not present. */
-    function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag> | undefined;
+    function getAllJSDocTagsOfKind(node: Node, kind: SyntaxKind): ReadonlyArray<JSDocTag>;
 }
 declare namespace ts {
     function isNumericLiteral(node: Node): node is NumericLiteral;
@@ -3260,6 +3254,7 @@ declare namespace ts {
     function isJSDocVariadicType(node: Node): node is JSDocVariadicType;
     function isJSDoc(node: Node): node is JSDoc;
     function isJSDocAugmentsTag(node: Node): node is JSDocAugmentsTag;
+    function isJSDocClassTag(node: Node): node is JSDocClassTag;
     function isJSDocParameterTag(node: Node): node is JSDocParameterTag;
     function isJSDocReturnTag(node: Node): node is JSDocReturnTag;
     function isJSDocTypeTag(node: Node): node is JSDocTypeTag;
@@ -3283,7 +3278,7 @@ declare namespace ts {
     function isEntityName(node: Node): node is EntityName;
     function isPropertyName(node: Node): node is PropertyName;
     function isBindingName(node: Node): node is BindingName;
-    function isFunctionLike(node: Node): node is FunctionLike;
+    function isFunctionLike(node: Node): node is SignatureDeclaration;
     function isClassElement(node: Node): node is ClassElement;
     function isClassLike(node: Node): node is ClassLikeDeclaration;
     function isAccessor(node: Node): node is AccessorDeclaration;
@@ -3301,7 +3296,8 @@ declare namespace ts {
     function isCallOrNewExpression(node: Node): node is CallExpression | NewExpression;
     function isTemplateLiteral(node: Node): node is TemplateLiteral;
     function isAssertionExpression(node: Node): node is AssertionExpression;
-    function isIterationStatement(node: Node, lookInLabeledStatements: boolean): node is IterationStatement;
+    function isIterationStatement(node: Node, lookInLabeledStatements: false): node is IterationStatement;
+    function isIterationStatement(node: Node, lookInLabeledStatements: boolean): node is IterationStatement | LabeledStatement;
     function isJsxOpeningLikeElement(node: Node): node is JsxOpeningLikeElement;
     function isCaseOrDefaultClause(node: Node): node is CaseOrDefaultClause;
     /** True if node is of a kind that may contain comment text. */
@@ -3398,6 +3394,8 @@ declare namespace ts {
     function createLoopVariable(): Identifier;
     /** Create a unique name based on the supplied text. */
     function createUniqueName(text: string): Identifier;
+    /** Create a unique name based on the supplied text. */
+    function createOptimisticUniqueName(text: string): Identifier;
     /** Create a unique name generated for a node. */
     function getGeneratedNameForNode(node: Node): Identifier;
     function createToken<TKind extends SyntaxKind>(token: TKind): Token<TKind>;
@@ -3406,6 +3404,8 @@ declare namespace ts {
     function createNull(): NullLiteral & Token<SyntaxKind.NullKeyword>;
     function createTrue(): BooleanLiteral & Token<SyntaxKind.TrueKeyword>;
     function createFalse(): BooleanLiteral & Token<SyntaxKind.FalseKeyword>;
+    function createModifier<T extends Modifier["kind"]>(kind: T): Token<T>;
+    function createModifiersFromModifierFlags(flags: ModifierFlags): Modifier[];
     function createQualifiedName(left: EntityName, right: string | Identifier): QualifiedName;
     function updateQualifiedName(node: QualifiedName, left: EntityName, right: Identifier): QualifiedName;
     function createComputedPropertyName(expression: Expression): ComputedPropertyName;
@@ -3606,7 +3606,7 @@ declare namespace ts {
     function updateNamespaceExportDeclaration(node: NamespaceExportDeclaration, name: Identifier): NamespaceExportDeclaration;
     function createImportEqualsDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, name: string | Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
     function updateImportEqualsDeclaration(node: ImportEqualsDeclaration, decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, name: Identifier, moduleReference: ModuleReference): ImportEqualsDeclaration;
-    function createImportDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier?: Expression): ImportDeclaration;
+    function createImportDeclaration(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression): ImportDeclaration;
     function updateImportDeclaration(node: ImportDeclaration, decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, importClause: ImportClause | undefined, moduleSpecifier: Expression | undefined): ImportDeclaration;
     function createImportClause(name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
     function updateImportClause(node: ImportClause, name: Identifier | undefined, namedBindings: NamedImportBindings | undefined): ImportClause;
@@ -3628,10 +3628,10 @@ declare namespace ts {
     function updateExternalModuleReference(node: ExternalModuleReference, expression: Expression): ExternalModuleReference;
     function createJsxElement(openingElement: JsxOpeningElement, children: ReadonlyArray<JsxChild>, closingElement: JsxClosingElement): JsxElement;
     function updateJsxElement(node: JsxElement, openingElement: JsxOpeningElement, children: ReadonlyArray<JsxChild>, closingElement: JsxClosingElement): JsxElement;
-    function createJsxSelfClosingElement(tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxSelfClosingElement;
-    function updateJsxSelfClosingElement(node: JsxSelfClosingElement, tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxSelfClosingElement;
-    function createJsxOpeningElement(tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxOpeningElement;
-    function updateJsxOpeningElement(node: JsxOpeningElement, tagName: JsxTagNameExpression, attributes: JsxAttributes): JsxOpeningElement;
+    function createJsxSelfClosingElement(tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxSelfClosingElement;
+    function updateJsxSelfClosingElement(node: JsxSelfClosingElement, tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxSelfClosingElement;
+    function createJsxOpeningElement(tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxOpeningElement;
+    function updateJsxOpeningElement(node: JsxOpeningElement, tagName: JsxTagNameExpression, typeArguments: ReadonlyArray<TypeNode> | undefined, attributes: JsxAttributes): JsxOpeningElement;
     function createJsxClosingElement(tagName: JsxTagNameExpression): JsxClosingElement;
     function updateJsxClosingElement(node: JsxClosingElement, tagName: JsxTagNameExpression): JsxClosingElement;
     function createJsxFragment(openingFragment: JsxOpeningFragment, children: ReadonlyArray<JsxChild>, closingFragment: JsxClosingFragment): JsxFragment;
@@ -3660,7 +3660,7 @@ declare namespace ts {
     function updateSpreadAssignment(node: SpreadAssignment, expression: Expression): SpreadAssignment;
     function createEnumMember(name: string | PropertyName, initializer?: Expression): EnumMember;
     function updateEnumMember(node: EnumMember, name: PropertyName, initializer: Expression | undefined): EnumMember;
-    function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>): SourceFile;
+    function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>, isDeclarationFile?: boolean, referencedFiles?: SourceFile["referencedFiles"], typeReferences?: SourceFile["typeReferenceDirectives"]): SourceFile;
     /**
      * Creates a shallow, memberwise clone of a node for mutation.
      */
@@ -4332,10 +4332,17 @@ declare namespace ts {
         isKnownTypesPackageName?(name: string): boolean;
         installPackage?(options: InstallPackageOptions): Promise<ApplyCodeActionCommandResult>;
     }
+    interface UserPreferences {
+        readonly quotePreference?: "double" | "single";
+        readonly includeCompletionsForModuleExports?: boolean;
+        readonly includeCompletionsWithInsertText?: boolean;
+        readonly importModuleSpecifierPreference?: "relative" | "non-relative";
+    }
     interface LanguageService {
         cleanupSemanticCache(): void;
         getSyntacticDiagnostics(fileName: string): Diagnostic[];
         getSemanticDiagnostics(fileName: string): Diagnostic[];
+        getSuggestionDiagnostics(fileName: string): Diagnostic[];
         getCompilerOptionsDiagnostics(): Diagnostic[];
         /**
          * @deprecated Use getEncodedSyntacticClassifications instead.
@@ -4348,7 +4355,7 @@ declare namespace ts {
         getEncodedSyntacticClassifications(fileName: string, span: TextSpan): Classifications;
         getEncodedSemanticClassifications(fileName: string, span: TextSpan): Classifications;
         getCompletionsAtPosition(fileName: string, position: number, options: GetCompletionsAtPositionOptions | undefined): CompletionInfo;
-        getCompletionEntryDetails(fileName: string, position: number, name: string, options: FormatCodeOptions | FormatCodeSettings | undefined, source: string | undefined): CompletionEntryDetails;
+        getCompletionEntryDetails(fileName: string, position: number, name: string, formatOptions: FormatCodeOptions | FormatCodeSettings | undefined, source: string | undefined, preferences: UserPreferences | undefined): CompletionEntryDetails;
         getCompletionEntrySymbol(fileName: string, position: number, name: string, source: string | undefined): Symbol;
         getQuickInfoAtPosition(fileName: string, position: number): QuickInfo;
         getNameOrDottedNameSpan(fileName: string, startPos: number, endPos: number): TextSpan;
@@ -4378,8 +4385,8 @@ declare namespace ts {
         getDocCommentTemplateAtPosition(fileName: string, position: number): TextInsertion;
         isValidBraceCompletionAtPosition(fileName: string, position: number, openingBrace: number): boolean;
         getSpanOfEnclosingComment(fileName: string, position: number, onlyMultiLine: boolean): TextSpan;
-        getCodeFixesAtPosition(fileName: string, start: number, end: number, errorCodes: ReadonlyArray<number>, formatOptions: FormatCodeSettings): ReadonlyArray<CodeFixAction>;
-        getCombinedCodeFix(scope: CombinedCodeFixScope, fixId: {}, formatOptions: FormatCodeSettings): CombinedCodeActions;
+        getCodeFixesAtPosition(fileName: string, start: number, end: number, errorCodes: ReadonlyArray<number>, formatOptions: FormatCodeSettings, preferences: UserPreferences): ReadonlyArray<CodeFixAction>;
+        getCombinedCodeFix(scope: CombinedCodeFixScope, fixId: {}, formatOptions: FormatCodeSettings, preferences: UserPreferences): CombinedCodeActions;
         applyCodeActionCommand(action: CodeActionCommand): Promise<ApplyCodeActionCommandResult>;
         applyCodeActionCommand(action: CodeActionCommand[]): Promise<ApplyCodeActionCommandResult[]>;
         applyCodeActionCommand(action: CodeActionCommand | CodeActionCommand[]): Promise<ApplyCodeActionCommandResult | ApplyCodeActionCommandResult[]>;
@@ -4389,9 +4396,9 @@ declare namespace ts {
         applyCodeActionCommand(fileName: string, action: CodeActionCommand[]): Promise<ApplyCodeActionCommandResult[]>;
         /** @deprecated `fileName` will be ignored */
         applyCodeActionCommand(fileName: string, action: CodeActionCommand | CodeActionCommand[]): Promise<ApplyCodeActionCommandResult | ApplyCodeActionCommandResult[]>;
-        getApplicableRefactors(fileName: string, positionOrRaneg: number | TextRange): ApplicableRefactorInfo[];
-        getEditsForRefactor(fileName: string, formatOptions: FormatCodeSettings, positionOrRange: number | TextRange, refactorName: string, actionName: string): RefactorEditInfo | undefined;
-        organizeImports(scope: OrganizeImportsScope, formatOptions: FormatCodeSettings): ReadonlyArray<FileTextChanges>;
+        getApplicableRefactors(fileName: string, positionOrRaneg: number | TextRange, preferences: UserPreferences | undefined): ApplicableRefactorInfo[];
+        getEditsForRefactor(fileName: string, formatOptions: FormatCodeSettings, positionOrRange: number | TextRange, refactorName: string, actionName: string, preferences: UserPreferences | undefined): RefactorEditInfo | undefined;
+        organizeImports(scope: OrganizeImportsScope, formatOptions: FormatCodeSettings, preferences: UserPreferences | undefined): ReadonlyArray<FileTextChanges>;
         getEmitOutput(fileName: string, emitOnlyDtsFiles?: boolean): EmitOutput;
         getProgram(): Program;
         dispose(): void;
@@ -4401,9 +4408,12 @@ declare namespace ts {
         fileName: string;
     }
     type OrganizeImportsScope = CombinedCodeFixScope;
-    interface GetCompletionsAtPositionOptions {
-        includeExternalModuleExports: boolean;
-        includeInsertTextCompletions: boolean;
+    /** @deprecated Use UserPreferences */
+    interface GetCompletionsAtPositionOptions extends UserPreferences {
+        /** @deprecated Use includeCompletionsForModuleExports */
+        includeExternalModuleExports?: boolean;
+        /** @deprecated Use includeCompletionsWithInsertText */
+        includeInsertTextCompletions?: boolean;
     }
     interface ApplyCodeActionCommandResult {
         successMessage: string;
@@ -4484,6 +4494,7 @@ declare namespace ts {
          * This may be omitted to indicate that the code fix can't be applied in a group.
          */
         fixId?: {};
+        fixAllDescription?: string;
     }
     interface CombinedCodeActions {
         changes: ReadonlyArray<FileTextChanges>;
@@ -4569,7 +4580,7 @@ declare namespace ts {
         none = "none",
         definition = "definition",
         reference = "reference",
-        writtenReference = "writtenReference",
+        writtenReference = "writtenReference"
     }
     interface HighlightSpan {
         fileName?: string;
@@ -4591,7 +4602,7 @@ declare namespace ts {
     enum IndentStyle {
         None = 0,
         Block = 1,
-        Smart = 2,
+        Smart = 2
     }
     interface EditorOptions {
         BaseIndentSize?: number;
@@ -4686,7 +4697,7 @@ declare namespace ts {
         typeParameterName = 18,
         enumMemberName = 19,
         functionName = 20,
-        regularExpressionLiteral = 21,
+        regularExpressionLiteral = 21
     }
     interface SymbolDisplayPart {
         text: string;
@@ -4746,7 +4757,7 @@ declare namespace ts {
         argumentCount: number;
     }
     interface CompletionInfo {
-        /** Not true for all glboal completions. This will be true if the enclosing scope matches a few syntax kinds. See `isGlobalCompletionScope`. */
+        /** Not true for all glboal completions. This will be true if the enclosing scope matches a few syntax kinds. See `isSnippetScope`. */
         isGlobalCompletion: boolean;
         isMemberCompletion: boolean;
         /**
@@ -4797,7 +4808,7 @@ declare namespace ts {
     enum OutputFileType {
         JavaScript = 0,
         SourceMap = 1,
-        Declaration = 2,
+        Declaration = 2
     }
     enum EndOfLineState {
         None = 0,
@@ -4806,7 +4817,7 @@ declare namespace ts {
         InDoubleQuoteStringLiteral = 3,
         InTemplateHeadOrNoSubstitutionTemplate = 4,
         InTemplateMiddleOrTail = 5,
-        InTemplateSubstitutionPosition = 6,
+        InTemplateSubstitutionPosition = 6
     }
     enum TokenClass {
         Punctuation = 0,
@@ -4817,7 +4828,7 @@ declare namespace ts {
         Identifier = 5,
         NumberLiteral = 6,
         StringLiteral = 7,
-        RegExpLiteral = 8,
+        RegExpLiteral = 8
     }
     interface ClassificationResult {
         finalLexState: EndOfLineState;
@@ -4916,7 +4927,7 @@ declare namespace ts {
         /**
          * <JsxTagName attribute1 attribute2={0} />
          */
-        jsxAttribute = "JSX attribute",
+        jsxAttribute = "JSX attribute"
     }
     enum ScriptElementKindModifier {
         none = "",
@@ -4927,7 +4938,7 @@ declare namespace ts {
         ambientModifier = "declare",
         staticModifier = "static",
         abstractModifier = "abstract",
-        optionalModifier = "optional",
+        optionalModifier = "optional"
     }
     enum ClassificationTypeNames {
         comment = "comment",
@@ -4952,7 +4963,7 @@ declare namespace ts {
         jsxSelfClosingTagName = "jsx self closing tag name",
         jsxAttribute = "jsx attribute",
         jsxText = "jsx text",
-        jsxAttributeStringLiteralValue = "jsx attribute string literal value",
+        jsxAttributeStringLiteralValue = "jsx attribute string literal value"
     }
     enum ClassificationType {
         comment = 1,
@@ -4978,7 +4989,7 @@ declare namespace ts {
         jsxSelfClosingTagName = 21,
         jsxAttribute = 22,
         jsxText = 23,
-        jsxAttributeStringLiteralValue = 24,
+        jsxAttributeStringLiteralValue = 24
     }
 }
 declare namespace ts {
@@ -5072,7 +5083,7 @@ declare namespace ts {
 }
 declare namespace ts {
     /** The version of the language service API */
-    const servicesVersion = "0.7";
+    const servicesVersion = "0.8";
     function toEditorSettings(options: EditorOptions | EditorSettings): EditorSettings;
     function displayPartsToString(displayParts: SymbolDisplayPart[]): string;
     function getDefaultCompilerOptions(): CompilerOptions;

lib/zh-CN/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "两个取值函数必须都是抽象的或都是非抽象的。",
   "Add_0_to_existing_import_declaration_from_1_90015": "将“{0}”从“{1}”添加到现有导入声明",
   "Add_async_modifier_to_containing_function_90029": "将异步修饰符添加到包含函数",
+  "Add_definite_assignment_assertion_to_property_0_95020": "向属性“{0}”添加明确的赋值断言",
   "Add_index_signature_for_property_0_90017": "为属性“{0}”添加索引签名",
+  "Add_initializer_to_property_0_95019": "向属性“{0}”添加初始值设定项",
   "Add_missing_super_call_90001": "添加缺失的 \"super()\" 调用",
   "Add_this_to_unresolved_variable_90008": "向未解析的变量添加 \"this.\"",
+  "Add_undefined_type_to_property_0_95018": "向属性“{0}”添加“未定义”类型",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "添加 tsconfig.json 文件有助于组织包含 TypeScript 和 JavaScript 文件的项目。有关详细信息，请访问 https://aka.ms/tsconfig。",
   "Additional_Checks_6176": "其他检查",
   "Advanced_Options_6178": "高级选项",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "“{0}”的所有声明必须具有相同的修饰符。",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "“{0}”的所有声明都必须具有相同的类型参数。",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "抽象方法的所有声明必须是连续的。",
+  "All_imports_in_import_declaration_are_unused_6192": "未使用导入声明中的所有导入。",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "允许从不带默认输出的模块中默认输入。这不会影响代码发出，只是类型检查。",
   "Allow_javascript_files_to_be_compiled_6102": "允许编译 JavaScript 文件。",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "提供 \"--isolatedModules\" 标志的情况下不允许使用环境常数枚举。",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "对 ES7 修饰器启用实验支持。",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "对发出修饰器的类型元数据启用实验支持。",
   "Enum_0_used_before_its_declaration_2450": "枚举“{0}”用于其声明前。",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "枚举声明只能与命名空间或其他枚举声明合并。",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "枚举声明必须全为常数或非常数。",
   "Enum_member_expected_1132": "应为枚举成员。",
   "Enum_member_must_have_initializer_1061": "枚举成员必须具有初始化表达式。",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "文件“{0}”不在 \"rootDir\"“{1}”下。\"rootDir\" 应包含所有源文件。",
   "File_0_not_found_6053": "找不到文件“{0}”。",
   "File_change_detected_Starting_incremental_compilation_6032": "检测到文件更改。正在启动增量编译...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "文件是 CommonJS 模块；它可能会转换为 ES6 模块。",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "文件名“{0}”仅在大小写方面与包含的文件名“{1}”不同。",
   "File_name_0_has_a_1_extension_stripping_it_6132": "文件名“{0}”的扩展名为“{1}”，请去除它。",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "文件规范不能包含出现在递归目录通配符(\"*\"): “{0}”后的父目录(\"..\")。",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "导入声明与“{0}”的局部声明冲突。",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "命名空间中的导入声明不能引用模块。",
   "Import_emit_helpers_from_tslib_6139": "从 \"tslib\" 导入发出帮助程序。",
+  "Import_may_be_converted_to_a_default_import_80003": "导入可能会转换为默认导入。",
   "Import_name_cannot_be_0_2438": "导入名称不能为“{0}”。",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "环境模块声明中的导入或导出声明不能通过相对模块名引用模块。",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "模块扩大中不允许导入。请考虑将它们移动到封闭的外部模块。",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc \"@{0}\" 未附加到类。",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc \"...\" 可能仅出现在签名的最后一个参数中。",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "JSDoc \"@param\" 标记具有名称 \"{0}\"，但不存在具有该名称的参数。",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "JSDoc \"@param\" 标记的名称为“{0}”，但该名称没有参数。如果它为数组类型，将匹配 \"arguments\"。",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "JSDoc \"@typedef\" 标记应具有类型注释，或其后跟有 \"@property\" 或 \"@member\" 标记。",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc 类型只能在文档注释内部使用。",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc 类型可能会移到 TypeScript 类型。",
   "JSX_attribute_expected_17003": "需要 JSX 属性。",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "只能为 JSX 属性分配非空“表达式”。",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "JSX 元素“{0}”没有相应的结束标记。",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX 元素不能具有多个名称相同的特性。",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX 表达式必须具有一个父元素。",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "JSX 片段没有相应的结束标记。",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "使用内联 JSX 工厂杂注时，不支持 JSX 片段",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "使用 --jsxFactory 时不支持 JSX 片段",
   "JSX_spread_child_must_be_an_array_type_2609": "JSX 扩展子属性必须为数组类型。",
   "Jump_target_cannot_cross_function_boundary_1107": "跳转目标不能跨越函数边界。",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "模块 {0} 已导出一个名为“{1}”的成员。请考虑重新显式导出以解决歧义。",
   "Module_0_has_no_default_export_1192": "模块“{0}”没有默认导出。",
   "Module_0_has_no_exported_member_1_2305": "模块“{0}”没有导出的成员“{1}”。",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "模块“{0}”没有导出的成员“{1}”。你是否指的是“{2}”?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "模块“{0}”被具有相同名称的局部声明隐藏。",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "模块“{0}”解析为非模块实体，且不能使用此构造导入。",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "模块“{0}”使用 \"export =\" 且无法与 \"export *\" 一起使用。",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "在带隐式“any\" 类型的 \"this\" 表达式上引发错误。",
   "Redirect_output_structure_to_the_directory_6006": "将输出结构重定向到目录。",
   "Remove_declaration_for_Colon_0_90004": "删除“{0}”的声明",
+  "Remove_import_from_0_90005": "从“{0}”删除导入",
   "Replace_import_with_0_95015": "用“{0}”替换导入。",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "在函数中的所有代码路径并非都返回值时报告错误。",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "报告 switch 语句中遇到 fallthrough 情况的错误。",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "报告未使用的局部变量上的错误。",
   "Report_errors_on_unused_parameters_6135": "报告未使用的参数上的错误。",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "所需的类型参数可能不遵循可选类型参数。",
-  "Resolution_for_module_0_was_found_in_cache_6147": "在缓存中找到了模块“{0}”的解析。",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "在位置“{1}”的缓存中找到模块“{0}”的解析。",
   "Resolving_from_node_modules_folder_6118": "正在从 node_modules 文件夹解析...",
   "Resolving_module_0_from_1_6086": "======== 正在从“{1}”解析模块“{0}”。========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "正在相对于基 URL“{1}”-“{2}”解析模块名“{0}”。",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "\"for...in\" 语句的变量声明不能有初始化表达式。",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "\"for...of\" 语句的变量声明不能有初始化表达式。",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "不支持 \"with\" 语句。\"with\" 程序块中的所有符号都将具有类型 \"any\"。",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "此构造函数可能会转换为类声明。",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "此语法需要一个导入的帮助程序，但找不到模块“{0}”。",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "此语法需要一个名为“{1}”的导入帮助程序，但模块“{0}”没有导出的成员“{1}”。",
   "Trailing_comma_not_allowed_1009": "不允许使用尾随逗号。",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "变量声明列表不能为空。",
   "Version_0_6029": "版本 {0}",
   "Watch_input_files_6005": "监视输入文件。",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "是否在监视模式下保留过时的控制台输出，而不是清除屏幕。",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "不能重命名标准 TypeScript 库中定义的元素。",
   "You_cannot_rename_this_element_8000": "无法重命名此元素。",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "“{0}”收到的参数过少，无法在此处充当修饰器。你是要先调用它，然后再写入 \"@{0}()\" 吗?",

lib/zh-TW/diagnosticMessages.generated.json

@@ -95,15 +95,19 @@
   "Accessors_must_both_be_abstract_or_non_abstract_2676": "存取子必須兩者均為抽象或非抽象。",
   "Add_0_to_existing_import_declaration_from_1_90015": "從 \"{1}\" 將 '{0}' 新增至現有的匯入宣告",
   "Add_async_modifier_to_containing_function_90029": "將 async 修飾詞新增至包含的函式",
+  "Add_definite_assignment_assertion_to_property_0_95020": "將明確指派判斷提示新增至屬性 '{0}'",
   "Add_index_signature_for_property_0_90017": "為屬性 '{0}' 新增索引簽章",
+  "Add_initializer_to_property_0_95019": "將初始設定式新增至屬性 '{0}'",
   "Add_missing_super_call_90001": "新增遺漏的 'super()' 呼叫",
   "Add_this_to_unresolved_variable_90008": "將 'this' 新增至未解析的變數",
+  "Add_undefined_type_to_property_0_95018": "將 'undefined' 類型新增至屬性 '{0}'",
   "Adding_a_tsconfig_json_file_will_help_organize_projects_that_contain_both_TypeScript_and_JavaScript__5068": "新增 tsconfig.json 檔案有助於組織同時包含 TypeScript 及 JavaScript 檔案的專案。若要深入了解，請前往 https://aka.ms/tsconfig。",
   "Additional_Checks_6176": "其他檢查",
   "Advanced_Options_6178": "進階選項",
   "All_declarations_of_0_must_have_identical_modifiers_2687": "'{0}' 的所有宣告都必須有相同修飾詞。",
   "All_declarations_of_0_must_have_identical_type_parameters_2428": "'{0}' 的所有宣告都必須具有相同的類型參數。",
   "All_declarations_of_an_abstract_method_must_be_consecutive_2516": "抽象方法的所有宣告必須連續。",
+  "All_imports_in_import_declaration_are_unused_6192": "匯入宣告中的所有匯入皆未使用。",
   "Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typech_6011": "允許從沒有預設匯出的模組進行預設匯入。這不會影響程式碼發出，僅為類型檢查。",
   "Allow_javascript_files_to_be_compiled_6102": "允許編譯 JavaScript 檔案。",
   "Ambient_const_enums_are_not_allowed_when_the_isolatedModules_flag_is_provided_1209": "提供 '--isolatedModules' 旗標時，不可使用環境常數列舉。",
@@ -324,6 +328,7 @@
   "Enables_experimental_support_for_ES7_decorators_6065": "啟用 ES7 裝飾項目的實驗支援。",
   "Enables_experimental_support_for_emitting_type_metadata_for_decorators_6066": "啟用實驗支援以發出裝飾項目類型的中繼資料。",
   "Enum_0_used_before_its_declaration_2450": "列舉 '{0}' 的位置在其宣告之前。",
+  "Enum_declarations_can_only_merge_with_namespace_or_other_enum_declarations_2567": "列舉宣告只能與命名空間或其他列舉宣告合併。",
   "Enum_declarations_must_all_be_const_or_non_const_2473": "列舉宣告必須都是 const 或非 const。",
   "Enum_member_expected_1132": "必須是列舉成員。",
   "Enum_member_must_have_initializer_1061": "列舉成員必須有初始設定式。",
@@ -378,6 +383,7 @@
   "File_0_is_not_under_rootDir_1_rootDir_is_expected_to_contain_all_source_files_6059": "檔案 '{0}' 不在 'rootDir' '{1}' 之下。'rootDir' 必須包含所有原始程式檔。",
   "File_0_not_found_6053": "找不到檔案 '{0}'。",
   "File_change_detected_Starting_incremental_compilation_6032": "偵測到檔案變更。正在啟動累加編譯...",
+  "File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module_80001": "檔案為 CommonJS 模組; 其可轉換為 ES6 模組。",
   "File_name_0_differs_from_already_included_file_name_1_only_in_casing_1149": "檔案名稱 '{0}' 與包含的檔案名稱 '{1}' 只差在大小寫。",
   "File_name_0_has_a_1_extension_stripping_it_6132": "檔案名稱 '{0}' 的副檔名為 '{1}'。正予以移除。",
   "File_specification_cannot_contain_a_parent_directory_that_appears_after_a_recursive_directory_wildca_5065": "檔案規格不得包含出現在遞迴目錄萬用字元 ('**') 之後的父目錄 ('..'): '{0}'。",
@@ -424,6 +430,7 @@
   "Import_declaration_conflicts_with_local_declaration_of_0_2440": "匯入宣告與 '{0}' 的區域宣告衝突。",
   "Import_declarations_in_a_namespace_cannot_reference_a_module_1147": "命名空間中的匯入宣告不得參考模組。",
   "Import_emit_helpers_from_tslib_6139": "從 'tslib' 匯入發出協助程式。",
+  "Import_may_be_converted_to_a_default_import_80003": "匯入可轉換成預設匯入。",
   "Import_name_cannot_be_0_2438": "匯入名稱不得為 '{0}'。",
   "Import_or_export_declaration_in_an_ambient_module_declaration_cannot_reference_module_through_relati_2439": "環境模組宣告中的匯入或匯出宣告，不得透過相對模組名稱參考模組。",
   "Imports_are_not_permitted_in_module_augmentations_Consider_moving_them_to_the_enclosing_external_mod_2667": "模組增強指定中不允許匯入。請考慮將其移至封入外部模組。",
@@ -462,8 +469,10 @@
   "JSDoc_0_is_not_attached_to_a_class_8022": "JSDoc ''@{0}' 未連結到類別。",
   "JSDoc_may_only_appear_in_the_last_parameter_of_a_signature_8028": "JSDoc '...' 只能出現在特徵標記的最後一個參數中。",
   "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_8024": "JSDoc '@param' 標記的名稱為 '{0}'，但沒有為該名稱的參數。",
+  "JSDoc_param_tag_has_name_0_but_there_is_no_parameter_with_that_name_It_would_match_arguments_if_it_h_8029": "JSDoc '@param' 標籤的名稱為 '{0}'，但沒有任何參數使用該名稱。如有陣列類型，則會與 'arguments' 相符。",
   "JSDoc_typedef_tag_should_either_have_a_type_annotation_or_be_followed_by_property_or_member_tags_8021": "JSDoc '@typedef' 標記應具有類型註解，或者其後接著 '@property' 或 '@member' 標記。",
   "JSDoc_types_can_only_be_used_inside_documentation_comments_8020": "JSDoc 類型只能在文件註解中使用。",
+  "JSDoc_types_may_be_moved_to_TypeScript_types_80004": "JSDoc 類型可移為 TypeScript 類型。",
   "JSX_attribute_expected_17003": "必須是 JSX 屬性。",
   "JSX_attributes_must_only_be_assigned_a_non_empty_expression_17000": "只能將非空白的 'expression' 指派給 JSX 屬性。",
   "JSX_element_0_has_no_corresponding_closing_tag_17008": "JSX 元素 '{0}' 沒有對應的結尾標記。",
@@ -476,6 +485,7 @@
   "JSX_elements_cannot_have_multiple_attributes_with_the_same_name_17001": "JSX 項目不得有多個同名的屬性。",
   "JSX_expressions_must_have_one_parent_element_2657": "JSX 運算式必須具有一個父元素。",
   "JSX_fragment_has_no_corresponding_closing_tag_17014": "JSX 片段沒有對應的結尾標記。",
+  "JSX_fragment_is_not_supported_when_using_an_inline_JSX_factory_pragma_17017": "使用內嵌 JSX 處理站 pragma 時，不支援 JSX 片段",
   "JSX_fragment_is_not_supported_when_using_jsxFactory_17016": "使用 --jsxFactory 時，不支援 JSX 片段",
   "JSX_spread_child_must_be_an_array_type_2609": "JSX 擴張子系必須為陣列類型。",
   "Jump_target_cannot_cross_function_boundary_1107": "跳躍目標不得跨越函式界限。",
@@ -507,6 +517,7 @@
   "Module_0_has_already_exported_a_member_named_1_Consider_explicitly_re_exporting_to_resolve_the_ambig_2308": "模組 {0} 已匯出名為 '{1}' 的成員。請考慮明確重新匯出項目以解決模稜兩可的情形。",
   "Module_0_has_no_default_export_1192": "模組 '{0}' 沒有預設匯出。",
   "Module_0_has_no_exported_member_1_2305": "模組 '{0}' 沒有匯出的成員 '{1}'。",
+  "Module_0_has_no_exported_member_1_Did_you_mean_2_2724": "模組 '{0}' 沒有任何匯出的成員 '{1}'。您是否指的是 '{2}'?",
   "Module_0_is_hidden_by_a_local_declaration_with_the_same_name_2437": "同名的區域宣告隱藏了模組 '{0}'。",
   "Module_0_resolves_to_a_non_module_entity_and_cannot_be_imported_using_this_construct_2497": "模組 '{0}' 會解析成非模組實體，且不可使用這個建構加以匯入。",
   "Module_0_uses_export_and_cannot_be_used_with_export_Asterisk_2498": "模組 '{0}' 使用 'export ='，因而無法以 'export *' 的方式使用。",
@@ -650,6 +661,7 @@
   "Raise_error_on_this_expressions_with_an_implied_any_type_6115": "對具有隱含 'any' 類型的 'this' 運算式引發錯誤。",
   "Redirect_output_structure_to_the_directory_6006": "將輸出結構重新導向至目錄。",
   "Remove_declaration_for_Colon_0_90004": "移除 '{0}' 的宣告",
+  "Remove_import_from_0_90005": "從 '{0}' 移除匯入",
   "Replace_import_with_0_95015": "以 '{0}' 取代匯入。",
   "Report_error_when_not_all_code_paths_in_function_return_a_value_6075": "當函式中的部分程式碼路徑並未傳回值時回報錯誤。",
   "Report_errors_for_fallthrough_cases_in_switch_statement_6076": "回報 switch 陳述式內 fallthrough 案例的錯誤。",
@@ -657,7 +669,7 @@
   "Report_errors_on_unused_locals_6134": "回報未使用之區域變數的錯誤。",
   "Report_errors_on_unused_parameters_6135": "回報未使用之參數的錯誤。",
   "Required_type_parameters_may_not_follow_optional_type_parameters_2706": "必要型別參數可能未遵循選擇性型別參數。",
-  "Resolution_for_module_0_was_found_in_cache_6147": "於快取找到模組 '{0}' 的解析。",
+  "Resolution_for_module_0_was_found_in_cache_from_location_1_6147": "從位置 '{1}' 的快取中找到模組 '{0}' 的解析。",
   "Resolving_from_node_modules_folder_6118": "正在從 node_modules 資料夾解析...",
   "Resolving_module_0_from_1_6086": "======== 正在從 '{1}' 解析模組 '{0}'。========",
   "Resolving_module_name_0_relative_to_base_url_1_2_6094": "正在解析與基底 URL '{1}' 相對的模組名稱 '{0}' - '{2}'。",
@@ -791,6 +803,7 @@
   "The_variable_declaration_of_a_for_in_statement_cannot_have_an_initializer_1189": "'for...in' 陳述式的變數宣告不得有初始設定式。",
   "The_variable_declaration_of_a_for_of_statement_cannot_have_an_initializer_1190": "'for...of' 陳述式的變數宣告不得有初始設定式。",
   "The_with_statement_is_not_supported_All_symbols_in_a_with_block_will_have_type_any_2410": "不支援 'with' 陳述式。'with' 區塊中的所有符號都會有類型 'any'。",
+  "This_constructor_function_may_be_converted_to_a_class_declaration_80002": "此建構函式可轉換為類別宣告。",
   "This_syntax_requires_an_imported_helper_but_module_0_cannot_be_found_2354": "此語法需要已匯入的協助程式，但找不到模組 '{0}'。",
   "This_syntax_requires_an_imported_helper_named_1_but_module_0_has_no_exported_member_1_2343": "此語法需要名為 '{1}' 的已匯入協助程式，但模組 '{0}' 沒有匯出的成員 '{1}'。",
   "Trailing_comma_not_allowed_1009": "尾端不得為逗號。",
@@ -887,6 +900,7 @@
   "Variable_declaration_list_cannot_be_empty_1123": "變數宣告清單不得為空白。",
   "Version_0_6029": "版本 {0}",
   "Watch_input_files_6005": "監看輸入檔案。",
+  "Whether_to_keep_outdated_console_output_in_watch_mode_instead_of_clearing_the_screen_6191": "是否要將已過期的主控台輸出，維持在監看模式下，而非清除螢幕。",
   "You_cannot_rename_elements_that_are_defined_in_the_standard_TypeScript_library_8001": "您無法重新命名標準 TypeScript 程式庫中所定義的項目。",
   "You_cannot_rename_this_element_8000": "您無法重新命名這個項目。",
   "_0_accepts_too_few_arguments_to_be_used_as_a_decorator_here_Did_you_mean_to_call_it_first_and_write__1329": "'{0}' 在此只接受極少數的引數用為裝飾項目。要先呼叫此項目，然後再寫入 '@{0}()' 嗎?",

src/compiler/binder.ts

@@ -2362,6 +2362,10 @@ namespace ts {
                     const symbolTable = hasModifier(thisContainer, ModifierFlags.Static) ? containingClass.symbol.exports : containingClass.symbol.members;
                     declareSymbol(symbolTable, containingClass.symbol, node, SymbolFlags.Property, SymbolFlags.None, /*isReplaceableByMethod*/ true);
                     break;
+                case SyntaxKind.SourceFile:
+                    // this.foo assignment in a source file
+                    // Do not bind. It would be nice to support this someday though.
+                    break;
 
                 default:
                     Debug.fail(Debug.showSyntaxKind(thisContainer));

src/compiler/builder.ts

@@ -218,29 +218,40 @@ namespace ts {
         newProgram: Program;
         host: BuilderProgramHost;
         oldProgram: BuilderProgram | undefined;
+        configFileParsingDiagnostics: ReadonlyArray<Diagnostic>;
     }
 
-    export function getBuilderCreationParameters(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | BuilderProgram, oldProgram?: BuilderProgram): BuilderCreationParameters {
+    export function getBuilderCreationParameters(newProgramOrRootNames: Program | ReadonlyArray<string> | undefined, hostOrOptions: BuilderProgramHost | CompilerOptions | undefined, oldProgramOrHost?: BuilderProgram | CompilerHost, configFileParsingDiagnosticsOrOldProgram?: ReadonlyArray<Diagnostic> | BuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): BuilderCreationParameters {
         let host: BuilderProgramHost;
         let newProgram: Program;
-        if (isArray(newProgramOrRootNames)) {
-            newProgram = createProgram(newProgramOrRootNames, hostOrOptions as CompilerOptions, oldProgramOrHost as CompilerHost, oldProgram && oldProgram.getProgram());
+        let oldProgram: BuilderProgram;
+        if (newProgramOrRootNames === undefined) {
+            Debug.assert(hostOrOptions === undefined);
+            host = oldProgramOrHost as CompilerHost;
+            oldProgram = configFileParsingDiagnosticsOrOldProgram as BuilderProgram;
+            Debug.assert(!!oldProgram);
+            newProgram = oldProgram.getProgram();
+        }
+        else if (isArray(newProgramOrRootNames)) {
+            oldProgram = configFileParsingDiagnosticsOrOldProgram as BuilderProgram;
+            newProgram = createProgram(newProgramOrRootNames, hostOrOptions as CompilerOptions, oldProgramOrHost as CompilerHost, oldProgram && oldProgram.getProgram(), configFileParsingDiagnostics);
             host = oldProgramOrHost as CompilerHost;
         }
         else {
             newProgram = newProgramOrRootNames;
             host = hostOrOptions as BuilderProgramHost;
             oldProgram = oldProgramOrHost as BuilderProgram;
+            configFileParsingDiagnostics = configFileParsingDiagnosticsOrOldProgram as ReadonlyArray<Diagnostic>;
         }
-        return { host, newProgram, oldProgram };
+        return { host, newProgram, oldProgram, configFileParsingDiagnostics: configFileParsingDiagnostics || emptyArray };
     }
 
     export function createBuilderProgram(kind: BuilderProgramKind.SemanticDiagnosticsBuilderProgram, builderCreationParameters: BuilderCreationParameters): SemanticDiagnosticsBuilderProgram;
     export function createBuilderProgram(kind: BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram, builderCreationParameters: BuilderCreationParameters): EmitAndSemanticDiagnosticsBuilderProgram;
-    export function createBuilderProgram(kind: BuilderProgramKind, { newProgram, host, oldProgram }: BuilderCreationParameters) {
+    export function createBuilderProgram(kind: BuilderProgramKind, { newProgram, host, oldProgram, configFileParsingDiagnostics }: BuilderCreationParameters) {
         // Return same program if underlying program doesnt change
         let oldState = oldProgram && oldProgram.getState();
-        if (oldState && newProgram === oldState.program) {
+        if (oldState && newProgram === oldState.program && configFileParsingDiagnostics !== newProgram.getConfigFileParsingDiagnostics()) {
             newProgram = undefined;
             oldState = undefined;
             return oldProgram;
@@ -269,6 +280,7 @@ namespace ts {
             getSourceFiles: () => state.program.getSourceFiles(),
             getOptionsDiagnostics: cancellationToken => state.program.getOptionsDiagnostics(cancellationToken),
             getGlobalDiagnostics: cancellationToken => state.program.getGlobalDiagnostics(cancellationToken),
+            getConfigFileParsingDiagnostics: () => configFileParsingDiagnostics || state.program.getConfigFileParsingDiagnostics(),
             getSyntacticDiagnostics: (sourceFile, cancellationToken) => state.program.getSyntacticDiagnostics(sourceFile, cancellationToken),
             getSemanticDiagnostics,
             emit,
@@ -471,6 +483,10 @@ namespace ts {
          * Get the diagnostics that dont belong to any file
          */
         getGlobalDiagnostics(cancellationToken?: CancellationToken): ReadonlyArray<Diagnostic>;
+        /**
+         * Get the diagnostics from config file parsing
+         */
+        getConfigFileParsingDiagnostics(): ReadonlyArray<Diagnostic>;
         /**
          * Get the syntax diagnostics, for all source files if source file is not supplied
          */
@@ -533,29 +549,29 @@ namespace ts {
     /**
      * Create the builder to manage semantic diagnostics and cache them
      */
-    export function createSemanticDiagnosticsBuilderProgram(newProgram: Program, host: BuilderProgramHost, oldProgram?: SemanticDiagnosticsBuilderProgram): SemanticDiagnosticsBuilderProgram;
-    export function createSemanticDiagnosticsBuilderProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: SemanticDiagnosticsBuilderProgram): SemanticDiagnosticsBuilderProgram;
-    export function createSemanticDiagnosticsBuilderProgram(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | SemanticDiagnosticsBuilderProgram, oldProgram?: SemanticDiagnosticsBuilderProgram) {
-        return createBuilderProgram(BuilderProgramKind.SemanticDiagnosticsBuilderProgram, getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, oldProgram));
+    export function createSemanticDiagnosticsBuilderProgram(newProgram: Program, host: BuilderProgramHost, oldProgram?: SemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): SemanticDiagnosticsBuilderProgram;
+    export function createSemanticDiagnosticsBuilderProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: SemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): SemanticDiagnosticsBuilderProgram;
+    export function createSemanticDiagnosticsBuilderProgram(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | SemanticDiagnosticsBuilderProgram, configFileParsingDiagnosticsOrOldProgram?: ReadonlyArray<Diagnostic> | SemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>) {
+        return createBuilderProgram(BuilderProgramKind.SemanticDiagnosticsBuilderProgram, getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics));
     }
 
     /**
      * Create the builder that can handle the changes in program and iterate through changed files
      * to emit the those files and manage semantic diagnostics cache as well
      */
-    export function createEmitAndSemanticDiagnosticsBuilderProgram(newProgram: Program, host: BuilderProgramHost, oldProgram?: EmitAndSemanticDiagnosticsBuilderProgram): EmitAndSemanticDiagnosticsBuilderProgram;
-    export function createEmitAndSemanticDiagnosticsBuilderProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: EmitAndSemanticDiagnosticsBuilderProgram): EmitAndSemanticDiagnosticsBuilderProgram;
-    export function createEmitAndSemanticDiagnosticsBuilderProgram(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | EmitAndSemanticDiagnosticsBuilderProgram, oldProgram?: EmitAndSemanticDiagnosticsBuilderProgram) {
-        return createBuilderProgram(BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram, getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, oldProgram));
+    export function createEmitAndSemanticDiagnosticsBuilderProgram(newProgram: Program, host: BuilderProgramHost, oldProgram?: EmitAndSemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): EmitAndSemanticDiagnosticsBuilderProgram;
+    export function createEmitAndSemanticDiagnosticsBuilderProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: EmitAndSemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): EmitAndSemanticDiagnosticsBuilderProgram;
+    export function createEmitAndSemanticDiagnosticsBuilderProgram(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | EmitAndSemanticDiagnosticsBuilderProgram, configFileParsingDiagnosticsOrOldProgram?: ReadonlyArray<Diagnostic> | EmitAndSemanticDiagnosticsBuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>) {
+        return createBuilderProgram(BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram, getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics));
     }
 
     /**
      * Creates a builder thats just abstraction over program and can be used with watch
      */
-    export function createAbstractBuilder(newProgram: Program, host: BuilderProgramHost, oldProgram?: BuilderProgram): BuilderProgram;
-    export function createAbstractBuilder(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: BuilderProgram): BuilderProgram;
-    export function createAbstractBuilder(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | BuilderProgram, oldProgram?: BuilderProgram): BuilderProgram {
-        const { newProgram: program } = getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, oldProgram);
+    export function createAbstractBuilder(newProgram: Program, host: BuilderProgramHost, oldProgram?: BuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): BuilderProgram;
+    export function createAbstractBuilder(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: BuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): BuilderProgram;
+    export function createAbstractBuilder(newProgramOrRootNames: Program | ReadonlyArray<string>, hostOrOptions: BuilderProgramHost | CompilerOptions, oldProgramOrHost?: CompilerHost | BuilderProgram, configFileParsingDiagnosticsOrOldProgram?: ReadonlyArray<Diagnostic> | BuilderProgram, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): BuilderProgram {
+        const { newProgram: program } = getBuilderCreationParameters(newProgramOrRootNames, hostOrOptions, oldProgramOrHost, configFileParsingDiagnosticsOrOldProgram, configFileParsingDiagnostics);
         return {
             // Only return program, all other methods are not implemented
             getProgram: () => program,
@@ -565,6 +581,7 @@ namespace ts {
             getSourceFiles: notImplemented,
             getOptionsDiagnostics: notImplemented,
             getGlobalDiagnostics: notImplemented,
+            getConfigFileParsingDiagnostics: notImplemented,
             getSyntacticDiagnostics: notImplemented,
             getSemanticDiagnostics: notImplemented,
             emit: notImplemented,

src/compiler/checker.ts

@@ -1234,7 +1234,7 @@ namespace ts {
                                     lastLocation.kind === SyntaxKind.Parameter ||
                                     (
                                         lastLocation === (<FunctionLikeDeclaration>location).type &&
-                                        result.valueDeclaration.kind === SyntaxKind.Parameter
+                                        !!findAncestor(result.valueDeclaration, isParameter)
                                     );
                             }
                         }
@@ -1432,7 +1432,7 @@ namespace ts {
             // We just climbed up parents looking for the name, meaning that we started in a descendant node of `lastLocation`.
             // If `result === lastSelfReferenceLocation.symbol`, that means that we are somewhere inside `lastSelfReferenceLocation` looking up a name, and resolving to `lastLocation` itself.
             // That means that this is a self-reference of `lastLocation`, and shouldn't count this when considering whether `lastLocation` is used.
-            if (isUse && result && nameNotFoundMessage && noUnusedIdentifiers && (!lastSelfReferenceLocation || result !== lastSelfReferenceLocation.symbol)) {
+            if (isUse && result && noUnusedIdentifiers && (!lastSelfReferenceLocation || result !== lastSelfReferenceLocation.symbol)) {
                 result.isReferenced |= meaning;
             }
 
@@ -1741,8 +1741,8 @@ namespace ts {
             // Declaration files (and ambient modules)
             if (!file || file.isDeclarationFile) {
                 // Definitely cannot have a synthetic default if they have a syntactic default member specified
-                const defaultExportSymbol = resolveExportByName(moduleSymbol, InternalSymbolName.Default, dontResolveAlias);
-                if (defaultExportSymbol && defaultExportSymbol.valueDeclaration && isSyntacticDefault(defaultExportSymbol.valueDeclaration)) {
+                const defaultExportSymbol = resolveExportByName(moduleSymbol, InternalSymbolName.Default, /*dontResolveAlias*/ true); // Dont resolve alias because we want the immediately exported symbol's declaration
+                if (defaultExportSymbol && some(defaultExportSymbol.declarations, isSyntacticDefault)) {
                     return false;
                 }
                 // It _might_ still be incorrect to assume there is no __esModule marker on the import at runtime, even if there is no `default` member
@@ -1902,11 +1902,16 @@ namespace ts {
                 resolveEntityName(node.propertyName || node.name, meaning, /*ignoreErrors*/ false, dontResolveAlias);
         }
 
-        function getTargetOfExportAssignment(node: ExportAssignment, dontResolveAlias: boolean): Symbol {
-            return resolveEntityName(<EntityNameExpression>node.expression, SymbolFlags.Value | SymbolFlags.Type | SymbolFlags.Namespace, /*ignoreErrors*/ false, dontResolveAlias);
+        function getTargetOfExportAssignment(node: ExportAssignment, dontResolveAlias: boolean): Symbol | undefined {
+            const aliasLike = resolveEntityName(<EntityNameExpression>node.expression, SymbolFlags.Value | SymbolFlags.Type | SymbolFlags.Namespace, /*ignoreErrors*/ true, dontResolveAlias);
+            if (aliasLike) {
+                return aliasLike;
+            }
+            checkExpression(node.expression);
+            return getNodeLinks(node.expression).resolvedSymbol;
         }
 
-        function getTargetOfAliasDeclaration(node: Declaration, dontRecursivelyResolve?: boolean): Symbol {
+        function getTargetOfAliasDeclaration(node: Declaration, dontRecursivelyResolve?: boolean): Symbol | undefined {
             switch (node.kind) {
                 case SyntaxKind.ImportEqualsDeclaration:
                     return getTargetOfImportEqualsDeclaration(<ImportEqualsDeclaration>node, dontRecursivelyResolve);
@@ -2503,11 +2508,8 @@ namespace ts {
             }
 
             const id = "" + getSymbolId(symbol);
-            let visitedSymbolTables: SymbolTable[];
-            if (visitedSymbolTablesMap.has(id)) {
-                visitedSymbolTables = visitedSymbolTablesMap.get(id);
-            }
-            else {
+            let visitedSymbolTables = visitedSymbolTablesMap.get(id);
+            if (!visitedSymbolTables) {
                 visitedSymbolTablesMap.set(id, visitedSymbolTables = []);
             }
             return forEachSymbolTableInScope(enclosingDeclaration, getAccessibleSymbolChainFromSymbolTable);
@@ -3324,6 +3326,10 @@ namespace ts {
                                 const methodDeclaration = <MethodSignature>signatureToSignatureDeclarationHelper(signature, SyntaxKind.MethodSignature, context);
                                 methodDeclaration.name = propertyName;
                                 methodDeclaration.questionToken = optionalToken;
+                                if (propertySymbol.valueDeclaration) {
+                                    // Copy comments to node for declaration emit
+                                    setCommentRange(methodDeclaration, propertySymbol.valueDeclaration);
+                                }
                                 typeElements.push(methodDeclaration);
                             }
                         }
@@ -3340,6 +3346,10 @@ namespace ts {
                                 optionalToken,
                                 propertyTypeNode,
                                /*initializer*/ undefined);
+                            if (propertySymbol.valueDeclaration) {
+                                // Copy comments to node for declaration emit
+                                setCommentRange(propertySignature, propertySymbol.valueDeclaration);
+                            }
                             typeElements.push(propertySignature);
                         }
                     }
@@ -3393,7 +3403,8 @@ namespace ts {
                 else {
                     typeParameters = signature.typeParameters && signature.typeParameters.map(parameter => typeParameterToDeclaration(parameter, context));
                 }
-                const parameters = signature.parameters.map(parameter => symbolToParameterDeclaration(parameter, context));
+
+                const parameters = signature.parameters.map(parameter => symbolToParameterDeclaration(parameter, context, kind === SyntaxKind.Constructor));
                 if (signature.thisParameter) {
                     const thisParameter = symbolToParameterDeclaration(signature.thisParameter, context);
                     parameters.unshift(thisParameter);
@@ -3433,7 +3444,7 @@ namespace ts {
                 return createTypeParameterDeclaration(name, constraintNode, defaultParameterNode);
             }
 
-            function symbolToParameterDeclaration(parameterSymbol: Symbol, context: NodeBuilderContext): ParameterDeclaration {
+            function symbolToParameterDeclaration(parameterSymbol: Symbol, context: NodeBuilderContext, preserveModifierFlags?: boolean): ParameterDeclaration {
                 const parameterDeclaration = getDeclarationOfKind<ParameterDeclaration>(parameterSymbol, SyntaxKind.Parameter);
                 Debug.assert(!!parameterDeclaration || isTransientSymbol(parameterSymbol) && !!parameterSymbol.isRestParameter);
 
@@ -3443,7 +3454,7 @@ namespace ts {
                 }
                 const parameterTypeNode = typeToTypeNodeHelper(parameterType, context);
 
-                const modifiers = !(context.flags & NodeBuilderFlags.OmitParameterModifiers) && parameterDeclaration && parameterDeclaration.modifiers && parameterDeclaration.modifiers.map(getSynthesizedClone);
+                const modifiers = !(context.flags & NodeBuilderFlags.OmitParameterModifiers) && preserveModifierFlags && parameterDeclaration && parameterDeclaration.modifiers && parameterDeclaration.modifiers.map(getSynthesizedClone);
                 const dotDotDotToken = !parameterDeclaration || isRestParameter(parameterDeclaration) ? createToken(SyntaxKind.DotDotDotToken) : undefined;
                 const name = parameterDeclaration
                     ? parameterDeclaration.name ?
@@ -6233,7 +6244,7 @@ namespace ts {
         }
 
         function getDefaultConstraintOfConditionalType(type: ConditionalType) {
-            return getUnionType([getTrueTypeFromConditionalType(type), getFalseTypeFromConditionalType(type)]);
+            return getUnionType([getInferredTrueTypeFromConditionalType(type), getFalseTypeFromConditionalType(type)]);
         }
 
         function getConstraintOfDistributiveConditionalType(type: ConditionalType): Type {
@@ -8151,6 +8162,9 @@ namespace ts {
                     }
                     return indexInfo.type;
                 }
+                if (indexType.flags & TypeFlags.Never) {
+                    return neverType;
+                }
                 if (accessExpression && !isConstEnumObjectType(objectType)) {
                     if (noImplicitAny && !compilerOptions.suppressImplicitAnyIndexErrors) {
                         if (getIndexTypeOfType(objectType, IndexKind.Number)) {
@@ -8340,16 +8354,19 @@ namespace ts {
             // If this is a distributive conditional type and the check type is generic we need to defer
             // resolution of the conditional type such that a later instantiation will properly distribute
             // over union types.
-            if (!root.isDistributive || !maybeTypeOfKind(checkType, TypeFlags.Instantiable)) {
+            const isDeferred = root.isDistributive && maybeTypeOfKind(checkType, TypeFlags.Instantiable);
                 let combinedMapper: TypeMapper;
                 if (root.inferTypeParameters) {
                     const context = createInferenceContext(root.inferTypeParameters, /*signature*/ undefined, InferenceFlags.None);
+                if (!isDeferred) {
                     // We don't want inferences from constraints as they may cause us to eagerly resolve the
                     // conditional type instead of deferring resolution. Also, we always want strict function
                     // types rules (i.e. proper contravariance) for inferences.
                     inferTypes(context.inferences, checkType, extendsType, InferencePriority.NoConstraints | InferencePriority.AlwaysStrict);
+                }
                     combinedMapper = combineTypeMappers(mapper, context);
                 }
+            if (!isDeferred) {
                 // Return union of trueType and falseType for 'any' since it matches anything
                 if (checkType.flags & TypeFlags.Any) {
                     return getUnionType([instantiateType(root.trueType, combinedMapper || mapper), instantiateType(root.falseType, mapper)]);
@@ -8378,6 +8395,7 @@ namespace ts {
             result.checkType = erasedCheckType;
             result.extendsType = extendsType;
             result.mapper = mapper;
+            result.combinedMapper = combinedMapper;
             result.aliasSymbol = root.aliasSymbol;
             result.aliasTypeArguments = instantiateTypes(root.aliasTypeArguments, mapper);
             return result;
@@ -8391,6 +8409,12 @@ namespace ts {
             return type.resolvedFalseType || (type.resolvedFalseType = instantiateType(type.root.falseType, type.mapper));
         }
 
+        function getInferredTrueTypeFromConditionalType(type: ConditionalType) {
+            return type.combinedMapper ?
+                type.resolvedInferredTrueType || (type.resolvedInferredTrueType = instantiateType(type.root.trueType, type.combinedMapper)) :
+                getTrueTypeFromConditionalType(type);
+        }
+
         function getInferTypeParameters(node: ConditionalTypeNode): TypeParameter[] {
             let result: TypeParameter[];
             if (node.locals) {
@@ -8900,7 +8924,7 @@ namespace ts {
             }
             // Keep the flags from the symbol we're instantiating.  Mark that is instantiated, and
             // also transient so that we can just store data on it directly.
-            const result = createSymbol(symbol.flags, symbol.escapedName, CheckFlags.Instantiated);
+            const result = createSymbol(symbol.flags, symbol.escapedName, CheckFlags.Instantiated | (getCheckFlags(symbol) & CheckFlags.Late));
             result.declarations = symbol.declarations;
             result.parent = symbol.parent;
             result.target = symbol;
@@ -14754,7 +14778,7 @@ namespace ts {
             return propsType;
         }
 
-        function getJsxPropsTypeFromClassType(hostClassType: Type, isJs: boolean, context: Node) {
+        function getJsxPropsTypeFromClassType(hostClassType: Type, isJs: boolean, context: JsxOpeningLikeElement, reportErrors: boolean) {
             if (isTypeAny(hostClassType)) {
                 return hostClassType;
             }
@@ -14773,6 +14797,9 @@ namespace ts {
 
                 if (!attributesType) {
                     // There is no property named 'props' on this instance type
+                    if (reportErrors && !!length(context.attributes.properties)) {
+                        error(context, Diagnostics.JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property, unescapeLeadingUnderscores(propsName));
+                    }
                     return emptyObjectType;
                 }
                 else if (isTypeAny(attributesType)) {
@@ -14803,10 +14830,10 @@ namespace ts {
             }
         }
 
-        function getJsxPropsTypeFromConstructSignature(sig: Signature, isJs: boolean, context: Node) {
+        function getJsxPropsTypeFromConstructSignature(sig: Signature, isJs: boolean, context: JsxOpeningLikeElement) {
             const hostClassType = getReturnTypeOfSignature(sig);
             if (hostClassType) {
-                return getJsxPropsTypeFromClassType(hostClassType, isJs, context);
+                return getJsxPropsTypeFromClassType(hostClassType, isJs, context, /*reportErrors*/ false);
             }
             return getJsxPropsTypeFromCallSignature(sig, context);
         }
@@ -15844,7 +15871,7 @@ namespace ts {
                 checkTypeRelatedTo(elemInstanceType, elementClassType, assignableRelation, openingLikeElement, Diagnostics.JSX_element_type_0_is_not_a_constructor_function_for_JSX_elements);
             }
 
-            return getJsxPropsTypeFromClassType(elemInstanceType, isInJavaScriptFile(openingLikeElement), openingLikeElement);
+            return getJsxPropsTypeFromClassType(elemInstanceType, isInJavaScriptFile(openingLikeElement), openingLikeElement, /*reportErrors*/ true);
         }
 
         /**
@@ -16049,28 +16076,21 @@ namespace ts {
             //     attr1 and attr2 are treated as JSXAttributes attached in the JsxOpeningLikeElement as "attributes".
             const sourceAttributesType = createJsxAttributesTypeFromAttributesProperty(openingLikeElement, checkMode);
 
-            // If the targetAttributesType is an emptyObjectType, indicating that there is no property named 'props' on this instance type.
-            // but there exists a sourceAttributesType, we need to explicitly give an error as normal assignability check allow excess properties and will pass.
-            if (targetAttributesType === emptyObjectType && (isTypeAny(sourceAttributesType) || getPropertiesOfType(<ResolvedType>sourceAttributesType).length > 0)) {
-                error(openingLikeElement, Diagnostics.JSX_element_class_does_not_support_attributes_because_it_does_not_have_a_0_property, unescapeLeadingUnderscores(getJsxElementPropertiesName(getJsxNamespaceAt(openingLikeElement))));
-            }
-            else {
-                // Check if sourceAttributesType assignable to targetAttributesType though this check will allow excess properties
-                const isSourceAttributeTypeAssignableToTarget = checkTypeAssignableTo(sourceAttributesType, targetAttributesType, openingLikeElement.attributes.properties.length > 0 ? openingLikeElement.attributes : openingLikeElement);
-                // After we check for assignability, we will do another pass to check that all explicitly specified attributes have correct name corresponding in targetAttributeType.
-                // This will allow excess properties in spread type as it is very common pattern to spread outer attributes into React component in its render method.
-                if (isSourceAttributeTypeAssignableToTarget && !isTypeAny(sourceAttributesType) && !isTypeAny(targetAttributesType)) {
-                    for (const attribute of openingLikeElement.attributes.properties) {
-                        if (!isJsxAttribute(attribute)) {
-                            continue;
-                        }
-                        const attrName = attribute.name;
-                        const isNotIgnoredJsxProperty = (isUnhyphenatedJsxName(idText(attrName)) || !!(getPropertyOfType(targetAttributesType, attrName.escapedText)));
-                        if (isNotIgnoredJsxProperty && !isKnownProperty(targetAttributesType, attrName.escapedText, /*isComparingJsxAttributes*/ true)) {
-                            error(attribute, Diagnostics.Property_0_does_not_exist_on_type_1, idText(attrName), typeToString(targetAttributesType));
-                            // We break here so that errors won't be cascading
-                            break;
-                        }
+            // Check if sourceAttributesType assignable to targetAttributesType though this check will allow excess properties
+            const isSourceAttributeTypeAssignableToTarget = checkTypeAssignableTo(sourceAttributesType, targetAttributesType, openingLikeElement.attributes.properties.length > 0 ? openingLikeElement.attributes : openingLikeElement);
+            // After we check for assignability, we will do another pass to check that all explicitly specified attributes have correct name corresponding in targetAttributeType.
+            // This will allow excess properties in spread type as it is very common pattern to spread outer attributes into React component in its render method.
+            if (isSourceAttributeTypeAssignableToTarget && !isTypeAny(sourceAttributesType) && !isTypeAny(targetAttributesType)) {
+                for (const attribute of openingLikeElement.attributes.properties) {
+                    if (!isJsxAttribute(attribute)) {
+                        continue;
+                    }
+                    const attrName = attribute.name;
+                    const isNotIgnoredJsxProperty = (isUnhyphenatedJsxName(idText(attrName)) || !!(getPropertyOfType(targetAttributesType, attrName.escapedText)));
+                    if (isNotIgnoredJsxProperty && !isKnownProperty(targetAttributesType, attrName.escapedText, /*isComparingJsxAttributes*/ true)) {
+                        error(attribute, Diagnostics.Property_0_does_not_exist_on_type_1, idText(attrName), typeToString(targetAttributesType));
+                        // We break here so that errors won't be cascading
+                        break;
                     }
                 }
             }
@@ -16100,7 +16120,9 @@ namespace ts {
         }
 
         function isMethodLike(symbol: Symbol) {
-            return !!(symbol.flags & SymbolFlags.Method || getCheckFlags(symbol) & CheckFlags.SyntheticMethod);
+            return !!(symbol.flags & SymbolFlags.Method ||
+                      getCheckFlags(symbol) & CheckFlags.SyntheticMethod ||
+                      isInJavaScriptFile(symbol.valueDeclaration) && isFunctionLikeDeclaration(getAssignedJavascriptInitializer(symbol.valueDeclaration)));
         }
 
         /**
@@ -19153,6 +19175,7 @@ namespace ts {
 
         function checkObjectLiteralAssignment(node: ObjectLiteralExpression, sourceType: Type): Type {
             const properties = node.properties;
+            checkGrammarForDisallowedTrailingComma(properties, Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma);
             if (strictNullChecks && properties.length === 0) {
                 return checkNonNullType(sourceType, node);
             }
@@ -19211,6 +19234,8 @@ namespace ts {
         }
 
         function checkArrayLiteralAssignment(node: ArrayLiteralExpression, sourceType: Type, checkMode?: CheckMode): Type {
+            const elements = node.elements;
+            checkGrammarForDisallowedTrailingComma(elements, Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma);
             if (languageVersion < ScriptTarget.ES2015 && compilerOptions.downlevelIteration) {
                 checkExternalEmitHelpers(node, ExternalEmitHelpers.Read);
             }
@@ -19219,7 +19244,6 @@ namespace ts {
             // present (aka the tuple element property). This call also checks that the parentType is in
             // fact an iterable or array (depending on target language).
             const elementType = checkIteratedTypeOrElementType(sourceType, node, /*allowStringInput*/ false, /*allowAsyncIterables*/ false) || unknownType;
-            const elements = node.elements;
             for (let i = 0; i < elements.length; i++) {
                 checkArrayLiteralDestructuringElementAssignment(node, sourceType, i, elementType, checkMode);
             }
@@ -22486,19 +22510,17 @@ namespace ts {
         function checkForOfStatement(node: ForOfStatement): void {
             checkGrammarForInOrForOfStatement(node);
 
-            if (node.kind === SyntaxKind.ForOfStatement) {
-                if (node.awaitModifier) {
-                    const functionFlags = getFunctionFlags(getContainingFunction(node));
-                    if ((functionFlags & (FunctionFlags.Invalid | FunctionFlags.Async)) === FunctionFlags.Async && languageVersion < ScriptTarget.ESNext) {
-                        // for..await..of in an async function or async generator function prior to ESNext requires the __asyncValues helper
-                        checkExternalEmitHelpers(node, ExternalEmitHelpers.ForAwaitOfIncludes);
-                    }
-                }
-                else if (compilerOptions.downlevelIteration && languageVersion < ScriptTarget.ES2015) {
-                    // for..of prior to ES2015 requires the __values helper when downlevelIteration is enabled
-                    checkExternalEmitHelpers(node, ExternalEmitHelpers.ForOfIncludes);
+            if (node.awaitModifier) {
+                const functionFlags = getFunctionFlags(getContainingFunction(node));
+                if ((functionFlags & (FunctionFlags.Invalid | FunctionFlags.Async)) === FunctionFlags.Async && languageVersion < ScriptTarget.ESNext) {
+                    // for..await..of in an async function or async generator function prior to ESNext requires the __asyncValues helper
+                    checkExternalEmitHelpers(node, ExternalEmitHelpers.ForAwaitOfIncludes);
                 }
             }
+            else if (compilerOptions.downlevelIteration && languageVersion < ScriptTarget.ES2015) {
+                // for..of prior to ES2015 requires the __values helper when downlevelIteration is enabled
+                checkExternalEmitHelpers(node, ExternalEmitHelpers.ForOfIncludes);
+            }
 
             // Check the LHS and RHS
             // If the LHS is a declaration, just check it as a variable declaration, which will in turn check the RHS
@@ -22577,8 +22599,8 @@ namespace ts {
 
             // unknownType is returned i.e. if node.expression is identifier whose name cannot be resolved
             // in this case error about missing name is already reported - do not report extra one
-            if (!isTypeAssignableToKind(rightType, TypeFlags.NonPrimitive | TypeFlags.InstantiableNonPrimitive)) {
-                error(node.expression, Diagnostics.The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter);
+            if (rightType === neverType || !isTypeAssignableToKind(rightType, TypeFlags.NonPrimitive | TypeFlags.InstantiableNonPrimitive)) {
+                error(node.expression, Diagnostics.The_right_hand_side_of_a_for_in_statement_must_be_of_type_any_an_object_type_or_a_type_parameter_but_here_has_type_0, typeToString(rightType));
             }
 
             checkSourceElement(node.statement);
@@ -22614,7 +22636,12 @@ namespace ts {
          * we want to get the iterated type of an iterable for ES2015 or later, or the iterated type
          * of a iterable (if defined globally) or element type of an array like for ES2015 or earlier.
          */
-        function getIteratedTypeOrElementType(inputType: Type, errorNode: Node, allowStringInput: boolean, allowAsyncIterables: boolean, checkAssignability: boolean): Type {
+        function getIteratedTypeOrElementType(inputType: Type, errorNode: Node, allowStringInput: boolean, allowAsyncIterables: boolean, checkAssignability: boolean): Type | undefined {
+            if (inputType === neverType) {
+                reportTypeNotIterableError(errorNode, inputType, allowAsyncIterables);
+                return undefined;
+            }
+
             const uplevelIteration = languageVersion >= ScriptTarget.ES2015;
             const downlevelIteration = !uplevelIteration && compilerOptions.downlevelIteration;
 
@@ -22674,13 +22701,18 @@ namespace ts {
                     // want to say that number is not an array type. But if the input was just
                     // number and string input is allowed, we want to say that number is not an
                     // array type or a string type.
+                    const isIterable = !!getIteratedTypeOfIterable(inputType, /* errorNode */ undefined, allowAsyncIterables, /*allowSyncIterables*/ true, checkAssignability);
                     const diagnostic = !allowStringInput || hasStringConstituent
                         ? downlevelIteration
                             ? Diagnostics.Type_0_is_not_an_array_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator
-                            : Diagnostics.Type_0_is_not_an_array_type
+                            : isIterable
+                                ? Diagnostics.Type_0_is_not_an_array_type_Use_compiler_option_downlevelIteration_to_allow_iterating_of_iterators
+                                : Diagnostics.Type_0_is_not_an_array_type
                         : downlevelIteration
                             ? Diagnostics.Type_0_is_not_an_array_type_or_a_string_type_or_does_not_have_a_Symbol_iterator_method_that_returns_an_iterator
-                            : Diagnostics.Type_0_is_not_an_array_type_or_a_string_type;
+                            : isIterable
+                                ? Diagnostics.Type_0_is_not_an_array_type_or_a_string_type_Use_compiler_option_downlevelIteration_to_allow_iterating_of_iterators
+                                : Diagnostics.Type_0_is_not_an_array_type_or_a_string_type;
                     error(errorNode, diagnostic, typeToString(arrayType));
                 }
                 return hasStringConstituent ? stringType : undefined;
@@ -22781,11 +22813,8 @@ namespace ts {
                 const signatures = methodType && getSignaturesOfType(methodType, SignatureKind.Call);
                 if (!some(signatures)) {
                     if (errorNode) {
-                        error(errorNode,
-                            allowAsyncIterables
-                                ? Diagnostics.Type_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator
-                                : Diagnostics.Type_must_have_a_Symbol_iterator_method_that_returns_an_iterator);
                         // only report on the first error
+                        reportTypeNotIterableError(errorNode, type, allowAsyncIterables);
                         errorNode = undefined;
                     }
                     return undefined;
@@ -22808,6 +22837,12 @@ namespace ts {
             }
         }
 
+        function reportTypeNotIterableError(errorNode: Node, type: Type, allowAsyncIterables: boolean): void {
+            error(errorNode, allowAsyncIterables
+                ? Diagnostics.Type_0_must_have_a_Symbol_asyncIterator_method_that_returns_an_async_iterator
+                : Diagnostics.Type_0_must_have_a_Symbol_iterator_method_that_returns_an_iterator, typeToString(type));
+        }
+
         /**
          * This function has very similar logic as getIteratedTypeOfIterable, except that it operates on
          * Iterators instead of Iterables. Here is the structure:
@@ -25030,12 +25065,14 @@ namespace ts {
             }
 
             if (entityName.parent.kind === SyntaxKind.ExportAssignment && isEntityNameExpression(entityName)) {
-                return resolveEntityName(entityName,
-                    /*all meanings*/ SymbolFlags.Value | SymbolFlags.Type | SymbolFlags.Namespace | SymbolFlags.Alias);
+                // Even an entity name expression that doesn't resolve as an entityname may still typecheck as a property access expression
+                const success = resolveEntityName(entityName,
+                    /*all meanings*/ SymbolFlags.Value | SymbolFlags.Type | SymbolFlags.Namespace | SymbolFlags.Alias, /*ignoreErrors*/ true);
+                if (success && success !== unknownSymbol) {
+                    return success;
+                }
             }
-
-            if (entityName.kind !== SyntaxKind.PropertyAccessExpression && isInRightSideOfImportOrExportAssignment(entityName)) {
-                // Since we already checked for ExportAssignment, this really could only be an Import
+            else if (entityName.kind !== SyntaxKind.PropertyAccessExpression && isInRightSideOfImportOrExportAssignment(entityName)) {
                 const importEqualsDeclaration = getAncestor(entityName, SyntaxKind.ImportEqualsDeclaration);
                 Debug.assert(importEqualsDeclaration !== undefined);
                 return getSymbolOfPartOfRightHandSideOfImportEquals(entityName, /*dontResolveAlias*/ true);
@@ -25897,7 +25934,7 @@ namespace ts {
                 // populate reverse mapping: file path -> type reference directive that was resolved to this file
                 fileToDirective = createMap<string>();
                 resolvedTypeReferenceDirectives.forEach((resolvedDirective, key) => {
-                    if (!resolvedDirective) {
+                    if (!resolvedDirective || !resolvedDirective.resolvedFileName) {
                         return;
                     }
                     const file = host.getSourceFile(resolvedDirective.resolvedFileName);
@@ -25957,18 +25994,23 @@ namespace ts {
                 getJsxFactoryEntity: location => location ? (getJsxNamespace(location), (getSourceFileOfNode(location).localJsxFactory || _jsxFactoryEntity)) : _jsxFactoryEntity
             };
 
+            function isInHeritageClause(node: PropertyAccessEntityNameExpression) {
+                return node.parent && node.parent.kind === SyntaxKind.ExpressionWithTypeArguments && node.parent.parent && node.parent.parent.kind === SyntaxKind.HeritageClause;
+            }
+
             // defined here to avoid outer scope pollution
             function getTypeReferenceDirectivesForEntityName(node: EntityNameOrEntityNameExpression): string[] {
                 // program does not have any files with type reference directives - bail out
                 if (!fileToDirective) {
                     return undefined;
                 }
-                // property access can only be used as values
+                // property access can only be used as values, or types when within an expression with type arguments inside a heritage clause
                 // qualified names can only be used as types\namespaces
                 // identifiers are treated as values only if they appear in type queries
-                const meaning = (node.kind === SyntaxKind.PropertyAccessExpression) || (node.kind === SyntaxKind.Identifier && isInTypeQuery(node))
-                    ? SymbolFlags.Value | SymbolFlags.ExportValue
-                    : SymbolFlags.Type | SymbolFlags.Namespace;
+                let meaning = SymbolFlags.Type | SymbolFlags.Namespace;
+                if ((node.kind === SyntaxKind.Identifier && isInTypeQuery(node)) || (node.kind === SyntaxKind.PropertyAccessExpression && !isInHeritageClause(node))) {
+                    meaning = SymbolFlags.Value | SymbolFlags.ExportValue;
+                }
 
                 const symbol = resolveEntityName(node, meaning, /*ignoreErrors*/ true);
                 return symbol && symbol !== unknownSymbol ? getTypeReferenceDirectivesForSymbol(symbol, meaning) : undefined;
@@ -26483,11 +26525,9 @@ namespace ts {
             return grammarErrorOnNode(asyncModifier, Diagnostics._0_modifier_cannot_be_used_here, "async");
         }
 
-        function checkGrammarForDisallowedTrailingComma(list: NodeArray<Node>): boolean {
+        function checkGrammarForDisallowedTrailingComma(list: NodeArray<Node>, diag = Diagnostics.Trailing_comma_not_allowed): boolean {
             if (list && list.hasTrailingComma) {
-                const start = list.end - ",".length;
-                const end = list.end;
-                return grammarErrorAtPos(list[0], start, end - start, Diagnostics.Trailing_comma_not_allowed);
+                return grammarErrorAtPos(list[0], list.end - ",".length, ",".length, diag);
             }
         }
 
@@ -26509,6 +26549,7 @@ namespace ts {
                     if (i !== (parameterCount - 1)) {
                         return grammarErrorOnNode(parameter.dotDotDotToken, Diagnostics.A_rest_parameter_must_be_last_in_a_parameter_list);
                     }
+                    checkGrammarForDisallowedTrailingComma(parameters, Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma);
 
                     if (isBindingPattern(parameter.name)) {
                         return grammarErrorOnNode(parameter.name, Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);
@@ -27123,6 +27164,7 @@ namespace ts {
                 if (node !== last(elements)) {
                     return grammarErrorOnNode(node, Diagnostics.A_rest_element_must_be_last_in_a_destructuring_pattern);
                 }
+                checkGrammarForDisallowedTrailingComma(elements, Diagnostics.A_rest_parameter_or_binding_pattern_may_not_have_a_trailing_comma);
 
                 if (node.name.kind === SyntaxKind.ArrayBindingPattern || node.name.kind === SyntaxKind.ObjectBindingPattern) {
                     return grammarErrorOnNode(node.name, Diagnostics.A_rest_element_cannot_contain_a_binding_pattern);

src/compiler/core.ts

@@ -1570,10 +1570,10 @@ namespace ts {
         }
     }
 
-    export function formatStringFromArgs(text: string, args: { [index: number]: string; }, baseIndex?: number): string {
+    export function formatStringFromArgs(text: string, args: ArrayLike<string>, baseIndex?: number): string {
         baseIndex = baseIndex || 0;
 
-        return text.replace(/{(\d+)}/g, (_match, index?) => args[+index + baseIndex]);
+        return text.replace(/{(\d+)}/g, (_match, index?: string) => Debug.assertDefined(args[+index + baseIndex]));
     }
 
     export let localizedDiagnosticMessages: MapLike<string>;
@@ -2909,7 +2909,7 @@ namespace ts {
             return value;
         }
 
-        export function assertEachDefined<T, A extends ReadonlyArray<T>>(value: A, message: string): A {
+        export function assertEachDefined<T, A extends ReadonlyArray<T>>(value: A, message?: string): A {
             for (const v of value) {
                 assertDefined(v, message);
             }

src/compiler/diagnosticMessages.json

@@ -27,6 +27,10 @@
         "category": "Error",
         "code": 1012
     },
+    "A rest parameter or binding pattern may not have a trailing comma.": {
+        "category": "Error",
+        "code": 1013
+    },
     "A rest parameter must be last in a parameter list.": {
         "category": "Error",
         "code": 1014
@@ -1372,7 +1376,7 @@
         "category": "Error",
         "code": 2406
     },
-    "The right-hand side of a 'for...in' statement must be of type 'any', an object type or a type parameter.": {
+    "The right-hand side of a 'for...in' statement must be of type 'any', an object type or a type parameter, but here has type '{0}'.": {
         "category": "Error",
         "code": 2407
     },
@@ -1668,7 +1672,7 @@
         "category": "Error",
         "code": 2487
     },
-    "Type must have a '[Symbol.iterator]()' method that returns an iterator.": {
+    "Type '{0}' must have a '[Symbol.iterator]()' method that returns an iterator.": {
         "category": "Error",
         "code": 2488
     },
@@ -1732,7 +1736,7 @@
         "category": "Error",
         "code": 2503
     },
-    "Type must have a '[Symbol.asyncIterator]()' method that returns an async iterator.": {
+    "Type '{0}' must have a '[Symbol.asyncIterator]()' method that returns an async iterator.": {
         "category": "Error",
         "code": 2504
     },
@@ -1988,6 +1992,14 @@
         "category": "Error",
         "code": 2567
     },
+    "Type '{0}' is not an array type. Use compiler option '--downlevelIteration' to allow iterating of iterators.": {
+        "category": "Error",
+        "code": 2568
+    },
+    "Type '{0}' is not an array type or a string type. Use compiler option '--downlevelIteration' to allow iterating of iterators.": {
+        "category": "Error",
+        "code": 2569
+    },
 
     "JSX element attributes type '{0}' may not be a union type.": {
         "category": "Error",
@@ -4026,5 +4038,101 @@
     "Add definite assignment assertion to property '{0}'": {
         "category": "Message",
         "code": 95020
+    },
+    "Add all missing members": {
+        "category": "Message",
+        "code": 95022
+    },
+    "Infer all types from usage": {
+        "category": "Message",
+        "code": 95023
+    },
+    "Delete all unused declarations": {
+        "category": "Message",
+        "code": 95024
+    },
+    "Prefix all unused declarations with '_' where possible": {
+        "category": "Message",
+        "code": 95025
+    },
+    "Fix all detected spelling errors": {
+        "category": "Message",
+        "code": 95026
+    },
+    "Add initializers to all uninitialized properties": {
+        "category": "Message",
+        "code": 95027
+    },
+    "Add definite assignment assertions to all uninitialized properties": {
+        "category": "Message",
+        "code": 95028
+    },
+    "Add undefined type to all uninitialized properties": {
+        "category": "Message",
+        "code": 95029
+    },
+    "Change all jsdoc-style types to TypeScript": {
+        "category": "Message",
+        "code": 95030
+    },
+    "Change all jsdoc-style types to TypeScript (and add '| undefined' to nullable types)": {
+        "category": "Message",
+        "code": 95031
+    },
+    "Implement all unimplemented interfaces": {
+        "category": "Message",
+        "code": 95032
+    },
+    "Install all missing types packages": {
+        "category": "Message",
+        "code": 95033
+    },
+    "Rewrite all as indexed access types": {
+        "category": "Message",
+        "code": 95034
+    },
+    "Convert all to default imports": {
+        "category": "Message",
+        "code": 95035
+    },
+    "Make all 'super()' calls the first statement in their constructor": {
+        "category": "Message",
+        "code": 95036
+    },
+    "Add 'this.' to all unresolved variables matching a member name": {
+        "category": "Message",
+        "code": 95037
+    },
+    "Change all extended interfaces to 'implements'": {
+        "category": "Message",
+        "code": 95038
+    },
+    "Add all missing super calls": {
+        "category": "Message",
+        "code": 95039
+    },
+    "Implement all inherited abstract classes": {
+        "category": "Message",
+        "code": 95040
+    },
+    "Add all missing 'async' modifiers": {
+        "category": "Message",
+        "code": 95041
+    },
+    "Add '@ts-ignore' to all error messages": {
+        "category": "Message",
+        "code": 95042
+    },
+    "Annotate everything with types from JSDoc": {
+        "category": "Message",
+        "code": 95043
+    },
+    "Add '()' to all uncalled decorators": {
+        "category": "Message",
+        "code": 95044
+    },
+    "Convert all constructor functions to classes": {
+        "category": "Message",
+        "code": 95045
     }
 }

src/compiler/emitter.ts

@@ -568,7 +568,7 @@ namespace ts {
             writeSpace();
             writeKeyword("in");
             writeSpace();
-            emit(node.constraint);
+            emitIfPresent(node.constraint);
         }
 
         function pipelineEmitUnspecified(node: Node): void {
@@ -1046,7 +1046,7 @@ namespace ts {
             }
             emitIfPresent(node.questionToken);
             if (node.parent && node.parent.kind === SyntaxKind.JSDocFunctionType && !node.name) {
-                emit(node.type);
+                emitIfPresent(node.type);
             }
             else {
                 emitTypeAnnotation(node.type);
@@ -1174,14 +1174,14 @@ namespace ts {
             writeSpace();
             writePunctuation("=>");
             writeSpace();
-            emit(node.type);
+            emitIfPresent(node.type);
         }
 
         function emitJSDocFunctionType(node: JSDocFunctionType) {
             write("function");
             emitParameters(node, node.parameters);
             write(":");
-            emit(node.type);
+            emitIfPresent(node.type);
         }
 
 
@@ -1208,7 +1208,7 @@ namespace ts {
             writeSpace();
             writePunctuation("=>");
             writeSpace();
-            emit(node.type);
+            emitIfPresent(node.type);
         }
 
         function emitTypeQuery(node: TypeQueryNode) {
@@ -1322,7 +1322,7 @@ namespace ts {
             }
             writePunctuation(":");
             writeSpace();
-            emit(node.type);
+            emitIfPresent(node.type);
             writeSemicolon();
             if (emitFlags & EmitFlags.SingleLine) {
                 writeSpace();
@@ -1593,7 +1593,7 @@ namespace ts {
 
         function emitYieldExpression(node: YieldExpression) {
             emitTokenWithComment(SyntaxKind.YieldKeyword, node.pos, writeKeyword, node);
-            emit(node.asteriskToken);
+            emitIfPresent(node.asteriskToken);
             emitExpressionWithLeadingSpace(node.expression);
         }
 
@@ -2156,12 +2156,12 @@ namespace ts {
         }
 
         function emitImportClause(node: ImportClause) {
-            emit(node.name);
+            emitIfPresent(node.name);
             if (node.name && node.namedBindings) {
                 emitTokenWithComment(SyntaxKind.CommaToken, node.name.end, writePunctuation, node);
                 writeSpace();
             }
-            emit(node.namedBindings);
+            emitIfPresent(node.namedBindings);
         }
 
         function emitNamespaceImport(node: NamespaceImport) {
@@ -2473,14 +2473,33 @@ namespace ts {
         }
 
         function emitSyntheticTripleSlashReferencesIfNeeded(node: Bundle) {
-            emitTripleSlashDirectives(node.syntheticFileReferences || [], node.syntheticTypeReferences || []);
+            emitTripleSlashDirectives(node.hasNoDefaultLib, node.syntheticFileReferences || [], node.syntheticTypeReferences || []);
         }
 
         function emitTripleSlashDirectivesIfNeeded(node: SourceFile) {
-            if (node.isDeclarationFile) emitTripleSlashDirectives(node.referencedFiles, node.typeReferenceDirectives);
+            if (node.isDeclarationFile) emitTripleSlashDirectives(node.hasNoDefaultLib, node.referencedFiles, node.typeReferenceDirectives);
         }
 
-        function emitTripleSlashDirectives(files: ReadonlyArray<FileReference>, types: ReadonlyArray<FileReference>) {
+        function emitTripleSlashDirectives(hasNoDefaultLib: boolean, files: ReadonlyArray<FileReference>, types: ReadonlyArray<FileReference>) {
+            if (hasNoDefaultLib) {
+                write(`/// <reference no-default-lib="true"/>`);
+                writeLine();
+            }
+            if (currentSourceFile && currentSourceFile.moduleName) {
+                write(`/// <amd-module name="${currentSourceFile.moduleName}" />`);
+                writeLine();
+            }
+            if (currentSourceFile && currentSourceFile.amdDependencies) {
+                for (const dep of currentSourceFile.amdDependencies) {
+                    if (dep.name) {
+                        write(`/// <amd-dependency name="${dep.name}" path="${dep.path}" />`);
+                    }
+                    else {
+                        write(`/// <amd-dependency path="${dep.path}" />`);
+                    }
+                    writeLine();
+                }
+            }
             for (const directive of files) {
                 write(`/// <reference path="${directive.fileName}" />`);
                 writeLine();

src/compiler/factory.ts

@@ -2387,12 +2387,13 @@ namespace ts {
 
     // Top-level nodes
 
-    export function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>, isDeclarationFile?: boolean, referencedFiles?: SourceFile["referencedFiles"], typeReferences?: SourceFile["typeReferenceDirectives"]) {
+    export function updateSourceFileNode(node: SourceFile, statements: ReadonlyArray<Statement>, isDeclarationFile?: boolean, referencedFiles?: SourceFile["referencedFiles"], typeReferences?: SourceFile["typeReferenceDirectives"], hasNoDefaultLib?: boolean) {
         if (
             node.statements !== statements ||
             (isDeclarationFile !== undefined && node.isDeclarationFile !== isDeclarationFile) ||
             (referencedFiles !== undefined && node.referencedFiles !== referencedFiles) ||
-            (typeReferences !== undefined && node.typeReferenceDirectives !== typeReferences)
+            (typeReferences !== undefined && node.typeReferenceDirectives !== typeReferences) ||
+            (hasNoDefaultLib !== undefined && node.hasNoDefaultLib !== hasNoDefaultLib)
         ) {
             const updated = <SourceFile>createSynthesizedNode(SyntaxKind.SourceFile);
             updated.flags |= node.flags;
@@ -2404,11 +2405,11 @@ namespace ts {
             updated.isDeclarationFile = isDeclarationFile === undefined ? node.isDeclarationFile : isDeclarationFile;
             updated.referencedFiles = referencedFiles === undefined ? node.referencedFiles : referencedFiles;
             updated.typeReferenceDirectives = typeReferences === undefined ? node.typeReferenceDirectives : typeReferences;
+            updated.hasNoDefaultLib = hasNoDefaultLib === undefined ? node.hasNoDefaultLib : hasNoDefaultLib;
             if (node.amdDependencies !== undefined) updated.amdDependencies = node.amdDependencies;
             if (node.moduleName !== undefined) updated.moduleName = node.moduleName;
             if (node.languageVariant !== undefined) updated.languageVariant = node.languageVariant;
             if (node.renamedDependencies !== undefined) updated.renamedDependencies = node.renamedDependencies;
-            if (node.hasNoDefaultLib !== undefined) updated.hasNoDefaultLib = node.hasNoDefaultLib;
             if (node.languageVersion !== undefined) updated.languageVersion = node.languageVersion;
             if (node.scriptKind !== undefined) updated.scriptKind = node.scriptKind;
             if (node.externalModuleIndicator !== undefined) updated.externalModuleIndicator = node.externalModuleIndicator;

src/compiler/moduleNameResolver.ts

@@ -794,6 +794,7 @@ namespace ts {
         if (traceEnabled) {
             trace(host, Diagnostics.Resolving_real_path_for_0_result_1, path, real);
         }
+        Debug.assert(host.fileExists(real), `${path} linked to nonexistent file ${real}`); // tslint:disable-line
         return real;
     }
 

src/compiler/parser.ts

@@ -1344,26 +1344,26 @@ namespace ts {
         }
 
         function nextTokenCanFollowModifier() {
-            if (token() === SyntaxKind.ConstKeyword) {
-                // 'const' is only a modifier if followed by 'enum'.
-                return nextToken() === SyntaxKind.EnumKeyword;
+            switch (token()) {
+                case SyntaxKind.ConstKeyword:
+                    // 'const' is only a modifier if followed by 'enum'.
+                    return nextToken() === SyntaxKind.EnumKeyword;
+                case SyntaxKind.ExportKeyword:
+                    nextToken();
+                    if (token() === SyntaxKind.DefaultKeyword) {
+                        return lookAhead(nextTokenCanFollowDefaultKeyword);
+                    }
+                    return token() !== SyntaxKind.AsteriskToken && token() !== SyntaxKind.AsKeyword && token() !== SyntaxKind.OpenBraceToken && canFollowModifier();
+                case SyntaxKind.DefaultKeyword:
+                    return nextTokenCanFollowDefaultKeyword();
+                case SyntaxKind.StaticKeyword:
+                case SyntaxKind.GetKeyword:
+                case SyntaxKind.SetKeyword:
+                    nextToken();
+                    return canFollowModifier();
+                default:
+                    return nextTokenIsOnSameLineAndCanFollowModifier();
             }
-            if (token() === SyntaxKind.ExportKeyword) {
-                nextToken();
-                if (token() === SyntaxKind.DefaultKeyword) {
-                    return lookAhead(nextTokenCanFollowDefaultKeyword);
-                }
-                return token() !== SyntaxKind.AsteriskToken && token() !== SyntaxKind.AsKeyword && token() !== SyntaxKind.OpenBraceToken && canFollowModifier();
-            }
-            if (token() === SyntaxKind.DefaultKeyword) {
-                return nextTokenCanFollowDefaultKeyword();
-            }
-            if (token() === SyntaxKind.StaticKeyword) {
-                nextToken();
-                return canFollowModifier();
-            }
-
-            return nextTokenIsOnSameLineAndCanFollowModifier();
         }
 
         function parseAnyContextualModifier(): boolean {
@@ -3600,7 +3600,7 @@ namespace ts {
                 // reScanGreaterToken so that we merge token sequences like > and = into >=
 
                 reScanGreaterToken();
-                const newPrecedence = getBinaryOperatorPrecedence();
+                const newPrecedence = getBinaryOperatorPrecedence(token());
 
                 // Check the precedence to see if we should "take" this operator
                 // - For left associative operator (all operator but **), consume the operator,
@@ -3662,52 +3662,7 @@ namespace ts {
                 return false;
             }
 
-            return getBinaryOperatorPrecedence() > 0;
-        }
-
-        function getBinaryOperatorPrecedence(): number {
-            switch (token()) {
-                case SyntaxKind.BarBarToken:
-                    return 1;
-                case SyntaxKind.AmpersandAmpersandToken:
-                    return 2;
-                case SyntaxKind.BarToken:
-                    return 3;
-                case SyntaxKind.CaretToken:
-                    return 4;
-                case SyntaxKind.AmpersandToken:
-                    return 5;
-                case SyntaxKind.EqualsEqualsToken:
-                case SyntaxKind.ExclamationEqualsToken:
-                case SyntaxKind.EqualsEqualsEqualsToken:
-                case SyntaxKind.ExclamationEqualsEqualsToken:
-                    return 6;
-                case SyntaxKind.LessThanToken:
-                case SyntaxKind.GreaterThanToken:
-                case SyntaxKind.LessThanEqualsToken:
-                case SyntaxKind.GreaterThanEqualsToken:
-                case SyntaxKind.InstanceOfKeyword:
-                case SyntaxKind.InKeyword:
-                case SyntaxKind.AsKeyword:
-                    return 7;
-                case SyntaxKind.LessThanLessThanToken:
-                case SyntaxKind.GreaterThanGreaterThanToken:
-                case SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
-                    return 8;
-                case SyntaxKind.PlusToken:
-                case SyntaxKind.MinusToken:
-                    return 9;
-                case SyntaxKind.AsteriskToken:
-                case SyntaxKind.SlashToken:
-                case SyntaxKind.PercentToken:
-                    return 10;
-                case SyntaxKind.AsteriskAsteriskToken:
-                    return 11;
-            }
-
-            // -1 is lower than all other precedences.  Returning it will cause binary expression
-            // parsing to stop.
-            return -1;
+            return getBinaryOperatorPrecedence(token()) > 0;
         }
 
         function makeBinaryExpression(left: Expression, operatorToken: BinaryOperatorToken, right: Expression): BinaryExpression {
@@ -3795,7 +3750,7 @@ namespace ts {
             if (isUpdateExpression()) {
                 const updateExpression = parseUpdateExpression();
                 return token() === SyntaxKind.AsteriskAsteriskToken ?
-                    <BinaryExpression>parseBinaryExpressionRest(getBinaryOperatorPrecedence(), updateExpression) :
+                    <BinaryExpression>parseBinaryExpressionRest(getBinaryOperatorPrecedence(token()), updateExpression) :
                     updateExpression;
             }
 
@@ -5506,19 +5461,6 @@ namespace ts {
             return finishNode(node);
         }
 
-        function isClassMemberModifier(idToken: SyntaxKind) {
-            switch (idToken) {
-                case SyntaxKind.PublicKeyword:
-                case SyntaxKind.PrivateKeyword:
-                case SyntaxKind.ProtectedKeyword:
-                case SyntaxKind.StaticKeyword:
-                case SyntaxKind.ReadonlyKeyword:
-                    return true;
-                default:
-                    return false;
-            }
-        }
-
         function isClassMemberStart(): boolean {
             let idToken: SyntaxKind;
 
@@ -6555,7 +6497,7 @@ namespace ts {
                     const result = target === PropertyLikeParse.Parameter ?
                         <JSDocParameterTag>createNode(SyntaxKind.JSDocParameterTag, atToken.pos) :
                         <JSDocPropertyTag>createNode(SyntaxKind.JSDocPropertyTag, atToken.pos);
-                    const nestedTypeLiteral = parseNestedTypeLiteral(typeExpression, name);
+                    const nestedTypeLiteral = parseNestedTypeLiteral(typeExpression, name, target);
                     if (nestedTypeLiteral) {
                         typeExpression = nestedTypeLiteral;
                         isNameFirst = true;
@@ -6569,15 +6511,17 @@ namespace ts {
                     return finishNode(result);
                 }
 
-                function parseNestedTypeLiteral(typeExpression: JSDocTypeExpression, name: EntityName) {
+                function parseNestedTypeLiteral(typeExpression: JSDocTypeExpression, name: EntityName, target: PropertyLikeParse) {
                     if (typeExpression && isObjectOrObjectArrayTypeReference(typeExpression.type)) {
                         const typeLiteralExpression = <JSDocTypeExpression>createNode(SyntaxKind.JSDocTypeExpression, scanner.getTokenPos());
-                        let child: JSDocParameterTag | false;
+                        let child: JSDocPropertyLikeTag | JSDocTypeTag | false;
                         let jsdocTypeLiteral: JSDocTypeLiteral;
                         const start = scanner.getStartPos();
-                        let children: JSDocParameterTag[];
-                        while (child = tryParse(() => parseChildParameterOrPropertyTag(PropertyLikeParse.Parameter, name))) {
-                            children = append(children, child);
+                        let children: JSDocPropertyLikeTag[];
+                        while (child = tryParse(() => parseChildParameterOrPropertyTag(target, name))) {
+                            if (child.kind === SyntaxKind.JSDocParameterTag || child.kind === SyntaxKind.JSDocPropertyTag) {
+                                children = append(children, child);
+                            }
                         }
                         if (children) {
                             jsdocTypeLiteral = <JSDocTypeLiteral>createNode(SyntaxKind.JSDocTypeLiteral, start);
@@ -6681,7 +6625,7 @@ namespace ts {
                         let jsdocTypeLiteral: JSDocTypeLiteral;
                         let childTypeTag: JSDocTypeTag;
                         const start = scanner.getStartPos();
-                        while (child = tryParse(() => parseChildParameterOrPropertyTag(PropertyLikeParse.Property))) {
+                        while (child = tryParse(() => parseChildPropertyTag())) {
                             if (!jsdocTypeLiteral) {
                                 jsdocTypeLiteral = <JSDocTypeLiteral>createNode(SyntaxKind.JSDocTypeLiteral, start);
                             }
@@ -6741,8 +6685,10 @@ namespace ts {
                     return a.escapedText === b.escapedText;
                 }
 
-                function parseChildParameterOrPropertyTag(target: PropertyLikeParse.Property): JSDocTypeTag | JSDocPropertyTag | false;
-                function parseChildParameterOrPropertyTag(target: PropertyLikeParse.Parameter, name: EntityName): JSDocParameterTag | false;
+                function parseChildPropertyTag() {
+                    return parseChildParameterOrPropertyTag(PropertyLikeParse.Property) as JSDocTypeTag | JSDocPropertyTag | false;
+                }
+
                 function parseChildParameterOrPropertyTag(target: PropertyLikeParse, name?: EntityName): JSDocTypeTag | JSDocPropertyTag | JSDocParameterTag | false {
                     let canParseTag = true;
                     let seenAsterisk = false;
@@ -7023,7 +6969,7 @@ namespace ts {
                 forEachChild(node, visitNode, visitArray);
                 if (hasJSDocNodes(node)) {
                     for (const jsDocComment of node.jsDoc) {
-                        forEachChild(jsDocComment, visitNode, visitArray);
+                        visitNode(<IncrementalNode><Node>jsDocComment);
                     }
                 }
                 checkNodePositions(node, aggressiveChecks);
@@ -7129,10 +7075,16 @@ namespace ts {
         function checkNodePositions(node: Node, aggressiveChecks: boolean) {
             if (aggressiveChecks) {
                 let pos = node.pos;
-                forEachChild(node, child => {
+                const visitNode = (child: Node) => {
                     Debug.assert(child.pos >= pos);
                     pos = child.end;
-                });
+                };
+                if (hasJSDocNodes(node)) {
+                    for (const jsDocComment of node.jsDoc) {
+                        visitNode(jsDocComment);
+                    }
+                }
+                forEachChild(node, visitNode);
                 Debug.assert(pos <= node.end);
             }
         }
@@ -7170,7 +7122,11 @@ namespace ts {
                     // Adjust the pos or end (or both) of the intersecting element accordingly.
                     adjustIntersectingElement(child, changeStart, changeRangeOldEnd, changeRangeNewEnd, delta);
                     forEachChild(child, visitNode, visitArray);
-
+                    if (hasJSDocNodes(child)) {
+                        for (const jsDocComment of child.jsDoc) {
+                            visitNode(<IncrementalNode><Node>jsDocComment);
+                        }
+                    }
                     checkNodePositions(child, aggressiveChecks);
                     return;
                 }

src/compiler/program.ts

@@ -198,6 +198,7 @@ namespace ts {
 
     export function getPreEmitDiagnostics(program: Program, sourceFile?: SourceFile, cancellationToken?: CancellationToken): Diagnostic[] {
         const diagnostics = [
+            ...program.getConfigFileParsingDiagnostics(),
             ...program.getOptionsDiagnostics(cancellationToken),
             ...program.getSyntacticDiagnostics(sourceFile, cancellationToken),
             ...program.getGlobalDiagnostics(cancellationToken),
@@ -454,6 +455,12 @@ namespace ts {
         }
     }
 
+    export function getConfigFileParsingDiagnostics(configFileParseResult: ParsedCommandLine): ReadonlyArray<Diagnostic> {
+        return configFileParseResult.options.configFile ?
+            configFileParseResult.options.configFile.parseDiagnostics.concat(configFileParseResult.errors) :
+            configFileParseResult.errors;
+    }
+
     /**
      * Determined if source file needs to be re-created even if its text hasn't changed
      */
@@ -485,9 +492,10 @@ namespace ts {
      * @param options - The compiler options which should be used.
      * @param host - The host interacts with the underlying file system.
      * @param oldProgram - Reuses an old program structure.
+     * @param configFileParsingDiagnostics - error during config file parsing
      * @returns A 'Program' object.
      */
-    export function createProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: Program): Program {
+    export function createProgram(rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: Program, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>): Program {
         let program: Program;
         let files: SourceFile[] = [];
         let commonSourceDirectory: string;
@@ -538,7 +546,7 @@ namespace ts {
         let resolveModuleNamesWorker: (moduleNames: string[], containingFile: string, reusedNames?: string[]) => ResolvedModuleFull[];
         const hasInvalidatedResolution = host.hasInvalidatedResolution || returnFalse;
         if (host.resolveModuleNames) {
-            resolveModuleNamesWorker = (moduleNames, containingFile, reusedNames) => host.resolveModuleNames(checkAllDefined(moduleNames), containingFile, reusedNames).map(resolved => {
+            resolveModuleNamesWorker = (moduleNames, containingFile, reusedNames) => host.resolveModuleNames(Debug.assertEachDefined(moduleNames), containingFile, reusedNames).map(resolved => {
                 // An older host may have omitted extension, in which case we should infer it from the file extension of resolvedFileName.
                 if (!resolved || (resolved as ResolvedModuleFull).extension !== undefined) {
                     return resolved as ResolvedModuleFull;
@@ -551,16 +559,16 @@ namespace ts {
         else {
             moduleResolutionCache = createModuleResolutionCache(currentDirectory, x => host.getCanonicalFileName(x));
             const loader = (moduleName: string, containingFile: string) => resolveModuleName(moduleName, containingFile, options, host, moduleResolutionCache).resolvedModule;
-            resolveModuleNamesWorker = (moduleNames, containingFile) => loadWithLocalCache(checkAllDefined(moduleNames), containingFile, loader);
+            resolveModuleNamesWorker = (moduleNames, containingFile) => loadWithLocalCache(Debug.assertEachDefined(moduleNames), containingFile, loader);
         }
 
         let resolveTypeReferenceDirectiveNamesWorker: (typeDirectiveNames: string[], containingFile: string) => ResolvedTypeReferenceDirective[];
         if (host.resolveTypeReferenceDirectives) {
-            resolveTypeReferenceDirectiveNamesWorker = (typeDirectiveNames, containingFile) => host.resolveTypeReferenceDirectives(checkAllDefined(typeDirectiveNames), containingFile);
+            resolveTypeReferenceDirectiveNamesWorker = (typeDirectiveNames, containingFile) => host.resolveTypeReferenceDirectives(Debug.assertEachDefined(typeDirectiveNames), containingFile);
         }
         else {
             const loader = (typesRef: string, containingFile: string) => resolveTypeReferenceDirective(typesRef, containingFile, options, host).resolvedTypeReferenceDirective;
-            resolveTypeReferenceDirectiveNamesWorker = (typeReferenceDirectiveNames, containingFile) => loadWithLocalCache(checkAllDefined(typeReferenceDirectiveNames), containingFile, loader);
+            resolveTypeReferenceDirectiveNamesWorker = (typeReferenceDirectiveNames, containingFile) => loadWithLocalCache(Debug.assertEachDefined(typeReferenceDirectiveNames), containingFile, loader);
         }
 
         // Map from a stringified PackageId to the source file with that id.
@@ -665,7 +673,8 @@ namespace ts {
             getSourceFileFromReference,
             sourceFileToPackageName,
             redirectTargetsSet,
-            isEmittedFile
+            isEmittedFile,
+            getConfigFileParsingDiagnostics
         };
 
         verifyCompilerOptions();
@@ -1568,6 +1577,10 @@ namespace ts {
             return sortAndDeduplicateDiagnostics(getDiagnosticsProducingTypeChecker().getGlobalDiagnostics().slice());
         }
 
+        function getConfigFileParsingDiagnostics(): ReadonlyArray<Diagnostic> {
+            return configFileParsingDiagnostics || emptyArray;
+        }
+
         function processRootFile(fileName: string, isDefaultLib: boolean) {
             processSourceFile(normalizePath(fileName), isDefaultLib, /*packageId*/ undefined);
         }
@@ -2415,11 +2428,6 @@ namespace ts {
         }
     }
 
-    function checkAllDefined(names: string[]): string[] {
-        Debug.assert(names.every(name => name !== undefined), "A name is undefined.", () => JSON.stringify(names));
-        return names;
-    }
-
     function getModuleNames({ imports, moduleAugmentations }: SourceFile): string[] {
         const res = imports.map(i => i.text);
         for (const aug of moduleAugmentations) {

src/compiler/sys.ts

@@ -334,9 +334,10 @@ namespace ts {
     /*@internal*/
     export interface RecursiveDirectoryWatcherHost {
         watchDirectory: HostWatchDirectory;
-        getAccessileSortedChildDirectories(path: string): ReadonlyArray<string>;
+        getAccessibleSortedChildDirectories(path: string): ReadonlyArray<string>;
         directoryExists(dir: string): boolean;
         filePathComparer: Comparer<string>;
+        realpath(s: string): string;
     }
 
     /**
@@ -392,9 +393,14 @@ namespace ts {
         function watchChildDirectories(parentDir: string, existingChildWatches: ChildWatches, callback: DirectoryWatcherCallback): ChildWatches {
             let newChildWatches: DirectoryWatcher[] | undefined;
             enumerateInsertsAndDeletes<string, DirectoryWatcher>(
-                host.directoryExists(parentDir) ? host.getAccessileSortedChildDirectories(parentDir) : emptyArray,
+                host.directoryExists(parentDir) ? mapDefined(host.getAccessibleSortedChildDirectories(parentDir), child => {
+                    const childFullName = getNormalizedAbsolutePath(child, parentDir);
+                    // Filter our the symbolic link directories since those arent included in recursive watch
+                    // which is same behaviour when recursive: true is passed to fs.watch
+                    return host.filePathComparer(childFullName, host.realpath(childFullName)) === Comparison.EqualTo ? childFullName : undefined;
+                }) : emptyArray,
                 existingChildWatches,
-                (child, childWatcher) => host.filePathComparer(getNormalizedAbsolutePath(child, parentDir), childWatcher.dirName),
+                (child, childWatcher) => host.filePathComparer(child, childWatcher.dirName),
                 createAndAddChildDirectoryWatcher,
                 closeFileWatcher,
                 addChildDirectoryWatcher
@@ -406,7 +412,7 @@ namespace ts {
              * Create new childDirectoryWatcher and add it to the new ChildDirectoryWatcher list
              */
             function createAndAddChildDirectoryWatcher(childName: string) {
-                const result = createDirectoryWatcher(getNormalizedAbsolutePath(childName, parentDir), callback);
+                const result = createDirectoryWatcher(childName, callback);
                 addChildDirectoryWatcher(result);
             }
 
@@ -601,14 +607,7 @@ namespace ts {
                 exit(exitCode?: number): void {
                     process.exit(exitCode);
                 },
-                realpath(path: string): string {
-                    try {
-                        return _fs.realpathSync(path);
-                    }
-                    catch {
-                        return path;
-                    }
-                },
+                realpath,
                 debugMode: some(<string[]>process.execArgv, arg => /^--(inspect|debug)(-brk)?(=\d+)?$/i.test(arg)),
                 tryEnableSourceMapsForHost() {
                     try {
@@ -699,8 +698,9 @@ namespace ts {
                 const watchDirectoryRecursively = createRecursiveDirectoryWatcher({
                     filePathComparer: useCaseSensitiveFileNames ? compareStringsCaseSensitive : compareStringsCaseInsensitive,
                     directoryExists,
-                    getAccessileSortedChildDirectories: path => getAccessibleFileSystemEntries(path).directories,
-                    watchDirectory
+                    getAccessibleSortedChildDirectories: path => getAccessibleFileSystemEntries(path).directories,
+                    watchDirectory,
+                    realpath
                 });
 
                 return (directoryName, callback, recursive) => {
@@ -1043,6 +1043,15 @@ namespace ts {
                 return filter<string>(_fs.readdirSync(path), dir => fileSystemEntryExists(combinePaths(path, dir), FileSystemEntryKind.Directory));
             }
 
+            function realpath(path: string): string {
+                try {
+                    return _fs.realpathSync(path);
+                }
+                catch {
+                    return path;
+                }
+            }
+
             function getModifiedTime(path: string) {
                 try {
                     return _fs.statSync(path).mtime;

src/compiler/transformers/declarations.ts

@@ -135,9 +135,11 @@ namespace ts {
             if (node.kind === SyntaxKind.Bundle) {
                 isBundledEmit = true;
                 const refs = createMap<SourceFile>();
+                let hasNoDefaultLib = false;
                 const bundle = createBundle(map(node.sourceFiles,
                     sourceFile => {
                         if (sourceFile.isDeclarationFile || isSourceFileJavaScript(sourceFile)) return; // Omit declaration files from bundle results, too
+                        hasNoDefaultLib = hasNoDefaultLib || sourceFile.hasNoDefaultLib;
                         currentSourceFile = sourceFile;
                         enclosingDeclaration = sourceFile;
                         possibleImports = undefined;
@@ -154,16 +156,17 @@ namespace ts {
                                 [createModifier(SyntaxKind.DeclareKeyword)],
                                 createLiteral(getResolvedExternalModuleName(context.getEmitHost(), sourceFile)),
                                 createModuleBlock(setTextRange(createNodeArray(filterCandidateImports(statements)), sourceFile.statements))
-                            )], /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ []);
+                            )], /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ [], /*hasNoDefaultLib*/ false);
                             return newFile;
                         }
                         needsDeclare = true;
                         const updated = visitNodes(sourceFile.statements, visitDeclarationStatements);
-                        return updateSourceFileNode(sourceFile, updated, /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ []);
+                        return updateSourceFileNode(sourceFile, updated, /*isDeclarationFile*/ true, /*referencedFiles*/ [], /*typeReferences*/ [], /*hasNoDefaultLib*/ false);
                     }
                 ));
                 bundle.syntheticFileReferences = [];
                 bundle.syntheticTypeReferences = getFileReferencesForUsedTypeReferences();
+                bundle.hasNoDefaultLib = hasNoDefaultLib;
                 const outputFilePath = getDirectoryPath(normalizeSlashes(getOutputPathsFor(node, host, /*forceDtsPaths*/ true).declarationFilePath));
                 const referenceVisitor = mapReferencesIntoArray(bundle.syntheticFileReferences as FileReference[], outputFilePath);
                 refs.forEach(referenceVisitor);
@@ -191,7 +194,7 @@ namespace ts {
             if (isExternalModule(node) && !resultHasExternalModuleIndicator) {
                 combinedStatements = setTextRange(createNodeArray([...combinedStatements, createExportDeclaration(/*decorators*/ undefined, /*modifiers*/ undefined, createNamedExports([]), /*moduleSpecifier*/ undefined)]), combinedStatements);
             }
-            const updated = updateSourceFileNode(node, combinedStatements, /*isDeclarationFile*/ true, references, getFileReferencesForUsedTypeReferences());
+            const updated = updateSourceFileNode(node, combinedStatements, /*isDeclarationFile*/ true, references, getFileReferencesForUsedTypeReferences(), node.hasNoDefaultLib);
             return updated;
 
             function getFileReferencesForUsedTypeReferences() {

src/compiler/transformers/es2015.ts

@@ -1510,8 +1510,7 @@ namespace ts {
                         break;
 
                     default:
-                        Debug.failBadSyntaxKind(node);
-                        break;
+                        return Debug.failBadSyntaxKind(node);
                 }
 
                 const captureNewTargetStatement = createVariableStatement(
@@ -1922,7 +1921,7 @@ namespace ts {
             return block;
         }
 
-        function visitFunctionBodyDownLevel(node: FunctionDeclaration | FunctionExpression) {
+        function visitFunctionBodyDownLevel(node: FunctionDeclaration | FunctionExpression | AccessorDeclaration) {
             const updated = visitFunctionBody(node.body, functionBodyVisitor, context);
             return updateBlock(
                 updated,
@@ -3196,18 +3195,15 @@ namespace ts {
             convertedLoopState = undefined;
             const ancestorFacts = enterSubtree(HierarchyFacts.FunctionExcludes, HierarchyFacts.FunctionIncludes);
             let updated: AccessorDeclaration;
-            if (node.transformFlags & TransformFlags.ContainsCapturedLexicalThis) {
-                const parameters = visitParameterList(node.parameters, visitor, context);
-                const body = transformFunctionBody(node);
-                if (node.kind === SyntaxKind.GetAccessor) {
-                    updated = updateGetAccessor(node, node.decorators, node.modifiers, node.name, parameters, node.type, body);
-                }
-                else {
-                    updated = updateSetAccessor(node, node.decorators, node.modifiers, node.name, parameters, body);
-                }
+            const parameters = visitParameterList(node.parameters, visitor, context);
+            const body = node.transformFlags & (TransformFlags.ContainsCapturedLexicalThis | TransformFlags.ContainsES2015)
+                ? transformFunctionBody(node)
+                : visitFunctionBodyDownLevel(node);
+            if (node.kind === SyntaxKind.GetAccessor) {
+                updated = updateGetAccessor(node, node.decorators, node.modifiers, node.name, parameters, node.type, body);
             }
             else {
-                updated = visitEachChild(node, visitor, context);
+                updated = updateSetAccessor(node, node.decorators, node.modifiers, node.name, parameters, body);
             }
             exitSubtree(ancestorFacts, HierarchyFacts.PropagateNewTargetMask, HierarchyFacts.None);
             convertedLoopState = savedConvertedLoopState;

src/compiler/transformers/generators.ts

@@ -430,8 +430,7 @@ namespace ts {
                     return visitFunctionExpression(<FunctionExpression>node);
 
                 default:
-                    Debug.failBadSyntaxKind(node);
-                    return visitEachChild(node, visitor, context);
+                    return Debug.failBadSyntaxKind(node);
             }
         }
 

src/compiler/transformers/jsx.ts

@@ -72,8 +72,7 @@ namespace ts {
                     return visitJsxFragment(node, /*isChild*/ true);
 
                 default:
-                    Debug.failBadSyntaxKind(node);
-                    return undefined;
+                    return Debug.failBadSyntaxKind(node);
             }
         }
 
@@ -182,7 +181,7 @@ namespace ts {
                 return visitJsxExpression(node);
             }
             else {
-                Debug.failBadSyntaxKind(node);
+                return Debug.failBadSyntaxKind(node);
             }
         }
 

src/compiler/transformers/module/system.ts

@@ -913,6 +913,12 @@ namespace ts {
                 delete deferredExports[id];
                 return append(statements, node);
             }
+            else {
+                const original = getOriginalNode(node);
+                if (isModuleOrEnumDeclaration(original)) {
+                    return append(appendExportsOfDeclaration(statements, original), node);
+                }
+            }
 
             return node;
         }

src/compiler/transformers/ts.ts

@@ -324,8 +324,7 @@ namespace ts {
                     return node;
 
                 default:
-                    Debug.failBadSyntaxKind(node);
-                    return undefined;
+                    return Debug.failBadSyntaxKind(node);
             }
         }
 
@@ -531,8 +530,7 @@ namespace ts {
                     return visitImportEqualsDeclaration(<ImportEqualsDeclaration>node);
 
                 default:
-                    Debug.failBadSyntaxKind(node);
-                    return visitEachChild(node, visitor, context);
+                    return Debug.failBadSyntaxKind(node);
             }
         }
 
@@ -1870,10 +1868,8 @@ namespace ts {
                             return createIdentifier("Boolean");
 
                         default:
-                            Debug.failBadSyntaxKind((<LiteralTypeNode>node).literal);
-                            break;
+                            return Debug.failBadSyntaxKind((<LiteralTypeNode>node).literal);
                     }
-                    break;
 
                 case SyntaxKind.NumberKeyword:
                     return createIdentifier("Number");
@@ -1900,8 +1896,7 @@ namespace ts {
                     break;
 
                 default:
-                    Debug.failBadSyntaxKind(node);
-                    break;
+                    return Debug.failBadSyntaxKind(node);
             }
 
             return createIdentifier("Object");

src/compiler/transformers/utilities.ts

@@ -60,7 +60,7 @@ namespace ts {
                     // import * as x from "mod"
                     // import { x, y } from "mod"
                     externalImports.push(<ImportDeclaration>node);
-                    hasImportStarOrImportDefault = getImportNeedsImportStarHelper(<ImportDeclaration>node) || getImportNeedsImportDefaultHelper(<ImportDeclaration>node);
+                    hasImportStarOrImportDefault = hasImportStarOrImportDefault || getImportNeedsImportStarHelper(<ImportDeclaration>node) || getImportNeedsImportDefaultHelper(<ImportDeclaration>node);
                     break;
 
                 case SyntaxKind.ImportEqualsDeclaration:

src/compiler/tsc.ts

@@ -117,7 +117,7 @@ namespace ts {
                 createWatchOfConfigFile(configParseResult, commandLineOptions);
             }
             else {
-                performCompilation(configParseResult.fileNames, configParseResult.options);
+                performCompilation(configParseResult.fileNames, configParseResult.options, getConfigFileParsingDiagnostics(configParseResult));
             }
         }
         else {
@@ -139,11 +139,11 @@ namespace ts {
         }
     }
 
-    function performCompilation(rootFileNames: string[], compilerOptions: CompilerOptions) {
+    function performCompilation(rootFileNames: string[], compilerOptions: CompilerOptions, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>) {
         const compilerHost = createCompilerHost(compilerOptions);
         enableStatistics(compilerOptions);
 
-        const program = createProgram(rootFileNames, compilerOptions, compilerHost);
+        const program = createProgram(rootFileNames, compilerOptions, compilerHost, /*oldProgram*/ undefined, configFileParsingDiagnostics);
         const exitStatus = emitFilesAndReportErrors(program, reportDiagnostic, s => sys.write(s + sys.newLine));
         reportStatistics(program);
         return sys.exit(exitStatus);
@@ -169,10 +169,7 @@ namespace ts {
     function createWatchOfConfigFile(configParseResult: ParsedCommandLine, optionsToExtend: CompilerOptions) {
         const watchCompilerHost = createWatchCompilerHostOfConfigFile(configParseResult.options.configFilePath, optionsToExtend, sys, /*createProgram*/ undefined, reportDiagnostic, createWatchStatusReporter(configParseResult.options));
         updateWatchCompilationHost(watchCompilerHost);
-        watchCompilerHost.rootFiles = configParseResult.fileNames;
-        watchCompilerHost.options = configParseResult.options;
-        watchCompilerHost.configFileSpecs = configParseResult.configFileSpecs;
-        watchCompilerHost.configFileWildCardDirectories = configParseResult.wildcardDirectories;
+        watchCompilerHost.configFileParsingResult = configParseResult;
         createWatchProgram(watchCompilerHost);
     }
 

src/compiler/types.ts

@@ -2590,6 +2590,7 @@ namespace ts {
         sourceFiles: ReadonlyArray<SourceFile>;
         /* @internal */ syntheticFileReferences?: ReadonlyArray<FileReference>;
         /* @internal */ syntheticTypeReferences?: ReadonlyArray<FileReference>;
+        /* @internal */ hasNoDefaultLib?: boolean;
     }
 
     export interface JsonSourceFile extends SourceFile {
@@ -2671,6 +2672,7 @@ namespace ts {
         getSyntacticDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): ReadonlyArray<Diagnostic>;
         getSemanticDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): ReadonlyArray<Diagnostic>;
         getDeclarationDiagnostics(sourceFile?: SourceFile, cancellationToken?: CancellationToken): ReadonlyArray<Diagnostic>;
+        getConfigFileParsingDiagnostics(): ReadonlyArray<Diagnostic>;
 
         /**
          * Gets a type checker that can be used to semantically analyze source files in the program.
@@ -2778,7 +2780,7 @@ namespace ts {
         getCompilerOptions(): CompilerOptions;
 
         getSourceFiles(): ReadonlyArray<SourceFile>;
-        getSourceFile(fileName: string): SourceFile;
+        getSourceFile(fileName: string): SourceFile | undefined;
         getResolvedTypeReferenceDirectives(): ReadonlyMap<ResolvedTypeReferenceDirective>;
     }
 
@@ -3878,7 +3880,11 @@ namespace ts {
         resolvedTrueType?: Type;
         resolvedFalseType?: Type;
         /* @internal */
+        resolvedInferredTrueType?: Type;
+        /* @internal */
         mapper?: TypeMapper;
+        /* @internal */
+        combinedMapper?: TypeMapper;
     }
 
     // Type parameter substitution (TypeFlags.Substitution)
@@ -5087,14 +5093,7 @@ namespace ts {
         // Otherwise, returns all the diagnostics (global and file associated) in this collection.
         getDiagnostics(fileName?: string): Diagnostic[];
 
-        // Gets a count of how many times this collection has been modified.  This value changes
-        // each time 'add' is called (regardless of whether or not an equivalent diagnostic was
-        // already in the collection).  As such, it can be used as a simple way to tell if any
-        // operation caused diagnostics to be returned by storing and comparing the return value
-        // of this method before/after the operation is performed.
-        getModificationCount(): number;
-
-        /* @internal */ reattachFileDiagnostics(newFile: SourceFile): void;
+        reattachFileDiagnostics(newFile: SourceFile): void;
     }
 
     // SyntaxKind.SyntaxList

src/compiler/utilities.ts

@@ -2059,12 +2059,12 @@ namespace ts {
                 // Name in member declaration or property name in property access
                 return (<NamedDeclaration | PropertyAccessExpression>parent).name === node;
             case SyntaxKind.QualifiedName:
-                // Name on right hand side of dot in a type query
+                // Name on right hand side of dot in a type query or type reference
                 if ((<QualifiedName>parent).right === node) {
                     while (parent.kind === SyntaxKind.QualifiedName) {
                         parent = parent.parent;
                     }
-                    return parent.kind === SyntaxKind.TypeQuery;
+                    return parent.kind === SyntaxKind.TypeQuery || parent.kind === SyntaxKind.TypeReference;
                 }
                 return false;
             case SyntaxKind.BindingElement:
@@ -2111,6 +2111,13 @@ namespace ts {
         return heritageClause ? heritageClause.types : undefined;
     }
 
+    /** Returns the node in an `extends` or `implements` clause of a class or interface. */
+    export function getAllSuperTypeNodes(node: Node): ReadonlyArray<TypeNode> {
+        return isInterfaceDeclaration(node) ? getInterfaceBaseTypeNodes(node) || emptyArray
+            : isClassLike(node) ? concatenate(singleElementArray(getClassExtendsHeritageClauseElement(node)), getClassImplementsHeritageClauseElements(node)) || emptyArray
+            : emptyArray;
+    }
+
     export function getInterfaceBaseTypeNodes(node: InterfaceDeclaration) {
         const heritageClause = getHeritageClause(node.heritageClauses, SyntaxKind.ExtendsKeyword);
         return heritageClause ? heritageClause.types : undefined;
@@ -2414,6 +2421,63 @@ namespace ts {
 
     export function getOperatorPrecedence(nodeKind: SyntaxKind, operatorKind: SyntaxKind, hasArguments?: boolean) {
         switch (nodeKind) {
+            case SyntaxKind.CommaListExpression:
+                return 0;
+
+            case SyntaxKind.SpreadElement:
+                return 1;
+
+            case SyntaxKind.YieldExpression:
+                return 2;
+
+            case SyntaxKind.ConditionalExpression:
+                return 4;
+
+            case SyntaxKind.BinaryExpression:
+                switch (operatorKind) {
+                    case SyntaxKind.CommaToken:
+                        return 0;
+
+                    case SyntaxKind.EqualsToken:
+                    case SyntaxKind.PlusEqualsToken:
+                    case SyntaxKind.MinusEqualsToken:
+                    case SyntaxKind.AsteriskAsteriskEqualsToken:
+                    case SyntaxKind.AsteriskEqualsToken:
+                    case SyntaxKind.SlashEqualsToken:
+                    case SyntaxKind.PercentEqualsToken:
+                    case SyntaxKind.LessThanLessThanEqualsToken:
+                    case SyntaxKind.GreaterThanGreaterThanEqualsToken:
+                    case SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken:
+                    case SyntaxKind.AmpersandEqualsToken:
+                    case SyntaxKind.CaretEqualsToken:
+                    case SyntaxKind.BarEqualsToken:
+                        return 3;
+
+                    default:
+                        return getBinaryOperatorPrecedence(operatorKind);
+                }
+
+            case SyntaxKind.PrefixUnaryExpression:
+            case SyntaxKind.TypeOfExpression:
+            case SyntaxKind.VoidExpression:
+            case SyntaxKind.DeleteExpression:
+            case SyntaxKind.AwaitExpression:
+                return 16;
+
+            case SyntaxKind.PostfixUnaryExpression:
+                return 17;
+
+            case SyntaxKind.CallExpression:
+                return 18;
+
+            case SyntaxKind.NewExpression:
+                return hasArguments ? 19 : 18;
+
+            case SyntaxKind.TaggedTemplateExpression:
+            case SyntaxKind.PropertyAccessExpression:
+            case SyntaxKind.ElementAccessExpression:
+                return 19;
+
             case SyntaxKind.ThisKeyword:
             case SyntaxKind.SuperKeyword:
             case SyntaxKind.Identifier:
@@ -2435,137 +2499,72 @@ namespace ts {
             case SyntaxKind.TemplateExpression:
             case SyntaxKind.ParenthesizedExpression:
             case SyntaxKind.OmittedExpression:
-                return 19;
-
-            case SyntaxKind.TaggedTemplateExpression:
-            case SyntaxKind.PropertyAccessExpression:
-            case SyntaxKind.ElementAccessExpression:
-                return 18;
-
-            case SyntaxKind.NewExpression:
-                return hasArguments ? 18 : 17;
-
-            case SyntaxKind.CallExpression:
-                return 17;
-
-            case SyntaxKind.PostfixUnaryExpression:
-                return 16;
-
-            case SyntaxKind.PrefixUnaryExpression:
-            case SyntaxKind.TypeOfExpression:
-            case SyntaxKind.VoidExpression:
-            case SyntaxKind.DeleteExpression:
-            case SyntaxKind.AwaitExpression:
-                return 15;
-
-            case SyntaxKind.BinaryExpression:
-                switch (operatorKind) {
-                    case SyntaxKind.ExclamationToken:
-                    case SyntaxKind.TildeToken:
-                        return 15;
-
-                    case SyntaxKind.AsteriskAsteriskToken:
-                    case SyntaxKind.AsteriskToken:
-                    case SyntaxKind.SlashToken:
-                    case SyntaxKind.PercentToken:
-                        return 14;
-
-                    case SyntaxKind.PlusToken:
-                    case SyntaxKind.MinusToken:
-                        return 13;
-
-                    case SyntaxKind.LessThanLessThanToken:
-                    case SyntaxKind.GreaterThanGreaterThanToken:
-                    case SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
-                        return 12;
-
-                    case SyntaxKind.LessThanToken:
-                    case SyntaxKind.LessThanEqualsToken:
-                    case SyntaxKind.GreaterThanToken:
-                    case SyntaxKind.GreaterThanEqualsToken:
-                    case SyntaxKind.InKeyword:
-                    case SyntaxKind.InstanceOfKeyword:
-                        return 11;
-
-                    case SyntaxKind.EqualsEqualsToken:
-                    case SyntaxKind.EqualsEqualsEqualsToken:
-                    case SyntaxKind.ExclamationEqualsToken:
-                    case SyntaxKind.ExclamationEqualsEqualsToken:
-                        return 10;
-
-                    case SyntaxKind.AmpersandToken:
-                        return 9;
-
-                    case SyntaxKind.CaretToken:
-                        return 8;
-
-                    case SyntaxKind.BarToken:
-                        return 7;
-
-                    case SyntaxKind.AmpersandAmpersandToken:
-                        return 6;
-
-                    case SyntaxKind.BarBarToken:
-                        return 5;
-
-                    case SyntaxKind.EqualsToken:
-                    case SyntaxKind.PlusEqualsToken:
-                    case SyntaxKind.MinusEqualsToken:
-                    case SyntaxKind.AsteriskAsteriskEqualsToken:
-                    case SyntaxKind.AsteriskEqualsToken:
-                    case SyntaxKind.SlashEqualsToken:
-                    case SyntaxKind.PercentEqualsToken:
-                    case SyntaxKind.LessThanLessThanEqualsToken:
-                    case SyntaxKind.GreaterThanGreaterThanEqualsToken:
-                    case SyntaxKind.GreaterThanGreaterThanGreaterThanEqualsToken:
-                    case SyntaxKind.AmpersandEqualsToken:
-                    case SyntaxKind.CaretEqualsToken:
-                    case SyntaxKind.BarEqualsToken:
-                        return 3;
-
-                    case SyntaxKind.CommaToken:
-                        return 0;
-
-                    default:
-                        return -1;
-                }
-
-            case SyntaxKind.ConditionalExpression:
-                return 4;
-
-            case SyntaxKind.YieldExpression:
-                return 2;
-
-            case SyntaxKind.SpreadElement:
-                return 1;
-
-            case SyntaxKind.CommaListExpression:
-                return 0;
+                return 20;
 
             default:
                 return -1;
         }
     }
 
+    /* @internal */
+    export function getBinaryOperatorPrecedence(kind: SyntaxKind): number {
+        switch (kind) {
+            case SyntaxKind.BarBarToken:
+                return 5;
+            case SyntaxKind.AmpersandAmpersandToken:
+                return 6;
+            case SyntaxKind.BarToken:
+                return 7;
+            case SyntaxKind.CaretToken:
+                return 8;
+            case SyntaxKind.AmpersandToken:
+                return 9;
+            case SyntaxKind.EqualsEqualsToken:
+            case SyntaxKind.ExclamationEqualsToken:
+            case SyntaxKind.EqualsEqualsEqualsToken:
+            case SyntaxKind.ExclamationEqualsEqualsToken:
+                return 10;
+            case SyntaxKind.LessThanToken:
+            case SyntaxKind.GreaterThanToken:
+            case SyntaxKind.LessThanEqualsToken:
+            case SyntaxKind.GreaterThanEqualsToken:
+            case SyntaxKind.InstanceOfKeyword:
+            case SyntaxKind.InKeyword:
+            case SyntaxKind.AsKeyword:
+                return 11;
+            case SyntaxKind.LessThanLessThanToken:
+            case SyntaxKind.GreaterThanGreaterThanToken:
+            case SyntaxKind.GreaterThanGreaterThanGreaterThanToken:
+                return 12;
+            case SyntaxKind.PlusToken:
+            case SyntaxKind.MinusToken:
+                return 13;
+            case SyntaxKind.AsteriskToken:
+            case SyntaxKind.SlashToken:
+            case SyntaxKind.PercentToken:
+                return 14;
+            case SyntaxKind.AsteriskAsteriskToken:
+                return 15;
+        }
+
+        // -1 is lower than all other precedences.  Returning it will cause binary expression
+        // parsing to stop.
+        return -1;
+    }
+
     export function createDiagnosticCollection(): DiagnosticCollection {
         let nonFileDiagnostics = [] as SortedArray<Diagnostic>;
         const filesWithDiagnostics = [] as SortedArray<string>;
         const fileDiagnostics = createMap<SortedArray<Diagnostic>>();
         let hasReadNonFileDiagnostics = false;
-        let modificationCount = 0;
 
         return {
             add,
             getGlobalDiagnostics,
             getDiagnostics,
-            getModificationCount,
             reattachFileDiagnostics
         };
 
-        function getModificationCount() {
-            return modificationCount;
-        }
-
         function reattachFileDiagnostics(newFile: SourceFile): void {
             forEach(fileDiagnostics.get(newFile.fileName), diagnostic => diagnostic.file = newFile);
         }
@@ -2591,7 +2590,6 @@ namespace ts {
             }
 
             insertSorted(diagnostics, diagnostic, compareDiagnostics);
-            modificationCount++;
         }
 
         function getGlobalDiagnostics(): Diagnostic[] {
@@ -4070,6 +4068,12 @@ namespace ts {
         return { start, length };
     }
 
+    /* @internal */
+    export function createTextRange(pos: number, end: number = pos): TextRange {
+        Debug.assert(end >= pos);
+        return { pos, end };
+    }
+
     export function createTextSpanFromBounds(start: number, end: number) {
         return createTextSpan(start, end - start);
     }
@@ -5432,6 +5436,16 @@ namespace ts {
         return false;
     }
 
+    /* @internal */
+    export function isParameterPropertyModifier(kind: SyntaxKind): boolean {
+        return !!(modifierToFlag(kind) & ModifierFlags.ParameterPropertyModifier);
+    }
+
+    /* @internal */
+    export function isClassMemberModifier(idToken: SyntaxKind): boolean {
+        return isParameterPropertyModifier(idToken) || idToken === SyntaxKind.StaticKeyword;
+    }
+
     export function isModifier(node: Node): node is Modifier {
         return isModifierKind(node.kind);
     }

src/compiler/visitor.ts

@@ -1546,11 +1546,11 @@ namespace ts {
     export namespace Debug {
         let isDebugInfoEnabled = false;
 
-        export const failBadSyntaxKind = shouldAssert(AssertionLevel.Normal)
-            ? (node: Node, message?: string): never => fail(
+        export function failBadSyntaxKind(node: Node, message?: string): never {
+            return fail(
                 `${message || "Unexpected node."}\r\nNode ${formatSyntaxKind(node.kind)} was unexpected.`,
-                failBadSyntaxKind)
-            : noop as () => never; // TODO: GH#22091
+                failBadSyntaxKind);
+        }
 
         export const assertEachNode = shouldAssert(AssertionLevel.Normal)
             ? (nodes: Node[], test: (node: Node) => boolean, message?: string): void => assert(

src/compiler/watch.ts

@@ -70,10 +70,8 @@ namespace ts {
     /** Parses config file using System interface */
     export function parseConfigFileWithSystem(configFileName: string, optionsToExtend: CompilerOptions, system: System, reportDiagnostic: DiagnosticReporter) {
         const host: ParseConfigFileHost = <any>system;
-        host.onConfigFileDiagnostic = reportDiagnostic;
         host.onUnRecoverableConfigFileDiagnostic = diagnostic => reportUnrecoverableDiagnostic(sys, reportDiagnostic, diagnostic);
         const result = getParsedCommandLineOfConfigFile(configFileName, optionsToExtend, host);
-        host.onConfigFileDiagnostic = undefined;
         host.onUnRecoverableConfigFileDiagnostic = undefined;
         return result;
     }
@@ -98,13 +96,8 @@ namespace ts {
         }
 
         const result = parseJsonText(configFileName, configFileText);
-        result.parseDiagnostics.forEach(diagnostic => host.onConfigFileDiagnostic(diagnostic));
-
         const cwd = host.getCurrentDirectory();
-        const configParseResult = parseJsonSourceFileConfigFileContent(result, host, getNormalizedAbsolutePath(getDirectoryPath(configFileName), cwd), optionsToExtend, getNormalizedAbsolutePath(configFileName, cwd));
-        configParseResult.errors.forEach(diagnostic => host.onConfigFileDiagnostic(diagnostic));
-
-        return configParseResult;
+        return parseJsonSourceFileConfigFileContent(result, host, getNormalizedAbsolutePath(getDirectoryPath(configFileName), cwd), optionsToExtend, getNormalizedAbsolutePath(configFileName, cwd));
     }
 
     /**
@@ -118,6 +111,7 @@ namespace ts {
         getOptionsDiagnostics(): ReadonlyArray<Diagnostic>;
         getGlobalDiagnostics(): ReadonlyArray<Diagnostic>;
         getSemanticDiagnostics(): ReadonlyArray<Diagnostic>;
+        getConfigFileParsingDiagnostics(): ReadonlyArray<Diagnostic>;
         emit(): EmitResult;
     }
 
@@ -126,16 +120,18 @@ namespace ts {
      */
     export function emitFilesAndReportErrors(program: ProgramToEmitFilesAndReportErrors, reportDiagnostic: DiagnosticReporter, writeFileName?: (s: string) => void) {
         // First get and report any syntactic errors.
-        const diagnostics = program.getSyntacticDiagnostics().slice();
+        const diagnostics = program.getConfigFileParsingDiagnostics().slice();
+        const configFileParsingDiagnosticsLength = diagnostics.length;
+        addRange(diagnostics, program.getSyntacticDiagnostics());
         let reportSemanticDiagnostics = false;
 
         // If we didn't have any syntactic errors, then also try getting the global and
         // semantic errors.
-        if (diagnostics.length === 0) {
+        if (diagnostics.length === configFileParsingDiagnosticsLength) {
             addRange(diagnostics, program.getOptionsDiagnostics());
             addRange(diagnostics, program.getGlobalDiagnostics());
 
-            if (diagnostics.length === 0) {
+            if (diagnostics.length === configFileParsingDiagnosticsLength) {
                 reportSemanticDiagnostics = true;
             }
         }
@@ -238,7 +234,6 @@ namespace ts {
     export function createWatchCompilerHostOfConfigFile<T extends BuilderProgram = EmitAndSemanticDiagnosticsBuilderProgram>(configFileName: string, optionsToExtend: CompilerOptions | undefined, system: System, createProgram?: CreateProgram<T>, reportDiagnostic?: DiagnosticReporter, reportWatchStatus?: WatchStatusReporter): WatchCompilerHostOfConfigFile<T> {
         reportDiagnostic = reportDiagnostic || createDiagnosticReporter(system);
         const host = createWatchCompilerHost(system, createProgram, reportDiagnostic, reportWatchStatus) as WatchCompilerHostOfConfigFile<T>;
-        host.onConfigFileDiagnostic = reportDiagnostic;
         host.onUnRecoverableConfigFileDiagnostic = diagnostic => reportUnrecoverableDiagnostic(system, reportDiagnostic, diagnostic);
         host.configFileName = configFileName;
         host.optionsToExtend = optionsToExtend;
@@ -259,7 +254,8 @@ namespace ts {
 namespace ts {
     export type DiagnosticReporter = (diagnostic: Diagnostic) => void;
     export type WatchStatusReporter = (diagnostic: Diagnostic, newLine: string, options: CompilerOptions) => void;
-    export type CreateProgram<T extends BuilderProgram> = (rootNames: ReadonlyArray<string>, options: CompilerOptions, host?: CompilerHost, oldProgram?: T) => T;
+    /** Create the program with rootNames and options, if they are undefined, oldProgram and new configFile diagnostics create new program */
+    export type CreateProgram<T extends BuilderProgram> = (rootNames: ReadonlyArray<string> | undefined, options: CompilerOptions | undefined, host?: CompilerHost, oldProgram?: T, configFileParsingDiagnostics?: ReadonlyArray<Diagnostic>) => T;
     export interface WatchCompilerHost<T extends BuilderProgram> {
         /**
          * Used to create the program when need for program creation or recreation detected
@@ -345,11 +341,6 @@ namespace ts {
      * Reports config file diagnostics
      */
     export interface ConfigFileDiagnosticsReporter {
-        /**
-         * Reports the diagnostics in reading/writing or parsing of the config file
-         */
-        onConfigFileDiagnostic: DiagnosticReporter;
-
         /**
          * Reports unrecoverable error when parsing config file
          */
@@ -378,11 +369,8 @@ namespace ts {
      */
     /*@internal*/
     export interface WatchCompilerHostOfConfigFile<T extends BuilderProgram> extends WatchCompilerHost<T> {
-        rootFiles?: string[];
-        options?: CompilerOptions;
         optionsToExtend?: CompilerOptions;
-        configFileSpecs?: ConfigFileSpecs;
-        configFileWildCardDirectories?: MapLike<WatchDirectoryFlags>;
+        configFileParsingResult?: ParsedCommandLine;
     }
 
     export interface Watch<T> {
@@ -460,7 +448,10 @@ namespace ts {
         const getCurrentDirectory = () => currentDirectory;
         const readFile: (path: string, encoding?: string) => string | undefined = (path, encoding) => host.readFile(path, encoding);
         const { configFileName, optionsToExtend: optionsToExtendForConfigFile = {}, createProgram } = host;
-        let { rootFiles: rootFileNames, options: compilerOptions, configFileSpecs, configFileWildCardDirectories } = host;
+        let { rootFiles: rootFileNames, options: compilerOptions } = host;
+        let configFileSpecs: ConfigFileSpecs;
+        let configFileParsingDiagnostics: ReadonlyArray<Diagnostic> | undefined;
+        let hasChangedConfigFileParsingErrors = false;
 
         const cachedDirectoryStructureHost = configFileName && createCachedDirectoryStructureHost(host, currentDirectory, useCaseSensitiveFileNames);
         if (cachedDirectoryStructureHost && host.onCachedDirectoryStructureHostCreate) {
@@ -473,13 +464,22 @@ namespace ts {
             fileExists: path => host.fileExists(path),
             readFile,
             getCurrentDirectory,
-            onConfigFileDiagnostic: host.onConfigFileDiagnostic,
             onUnRecoverableConfigFileDiagnostic: host.onUnRecoverableConfigFileDiagnostic
         };
 
         // From tsc we want to get already parsed result and hence check for rootFileNames
-        if (configFileName && !rootFileNames) {
-            parseConfigFile();
+        let newLine = updateNewLine();
+        reportWatchDiagnostic(Diagnostics.Starting_compilation_in_watch_mode);
+        if (configFileName) {
+            newLine = getNewLineCharacter(optionsToExtendForConfigFile, () => host.getNewLine());
+            if (host.configFileParsingResult) {
+                setConfigFileParsingResult(host.configFileParsingResult);
+            }
+            else {
+                Debug.assert(!rootFileNames);
+                parseConfigFile();
+            }
+            newLine = updateNewLine();
         }
 
         const trace = host.trace && ((s: string) => { host.trace(s + newLine); });
@@ -489,7 +489,6 @@ namespace ts {
         const { watchFile, watchFilePath, watchDirectory: watchDirectoryWorker } = getWatchFactory(watchLogLevel, writeLog);
 
         const getCanonicalFileName = createGetCanonicalFileName(useCaseSensitiveFileNames);
-        let newLine = updateNewLine();
 
         writeLog(`Current directory: ${currentDirectory} CaseSensitiveFileNames: ${useCaseSensitiveFileNames}`);
         if (configFileName) {
@@ -546,7 +545,6 @@ namespace ts {
             ((typeDirectiveNames, containingFile) => resolutionCache.resolveTypeReferenceDirectives(typeDirectiveNames, containingFile));
         const userProvidedResolution = !!host.resolveModuleNames || !!host.resolveTypeReferenceDirectives;
 
-        reportWatchDiagnostic(Diagnostics.Starting_compilation_in_watch_mode);
         synchronizeProgram();
 
         // Update the wild card directory watch
@@ -578,6 +576,10 @@ namespace ts {
             // All resolutions are invalid if user provided resolutions
             const hasInvalidatedResolution = resolutionCache.createHasInvalidatedResolution(userProvidedResolution);
             if (isProgramUptoDate(getCurrentProgram(), rootFileNames, compilerOptions, getSourceVersion, fileExists, hasInvalidatedResolution, hasChangedAutomaticTypeDirectiveNames)) {
+                if (hasChangedConfigFileParsingErrors) {
+                    builderProgram = createProgram(/*rootNames*/ undefined, /*options*/ undefined, compilerHost, builderProgram, configFileParsingDiagnostics);
+                    hasChangedConfigFileParsingErrors = false;
+                }
                 return builderProgram;
             }
 
@@ -590,10 +592,11 @@ namespace ts {
 
             const needsUpdateInTypeRootWatch = hasChangedCompilerOptions || !program;
             hasChangedCompilerOptions = false;
+            hasChangedConfigFileParsingErrors = false;
             resolutionCache.startCachingPerDirectoryResolution();
             compilerHost.hasInvalidatedResolution = hasInvalidatedResolution;
             compilerHost.hasChangedAutomaticTypeDirectiveNames = hasChangedAutomaticTypeDirectiveNames;
-            builderProgram = createProgram(rootFileNames, compilerOptions, compilerHost, builderProgram);
+            builderProgram = createProgram(rootFileNames, compilerOptions, compilerHost, builderProgram, configFileParsingDiagnostics);
             resolutionCache.finishCachingPerDirectoryResolution();
 
             // Update watches
@@ -630,7 +633,7 @@ namespace ts {
         }
 
         function updateNewLine() {
-            return getNewLineCharacter(compilerOptions, () => host.getNewLine());
+            return getNewLineCharacter(compilerOptions || optionsToExtendForConfigFile, () => host.getNewLine());
         }
 
         function toPath(fileName: string) {
@@ -760,7 +763,7 @@ namespace ts {
 
         function reportWatchDiagnostic(message: DiagnosticMessage) {
             if (host.onWatchStatusChange) {
-                host.onWatchStatusChange(createCompilerDiagnostic(message), newLine, compilerOptions);
+                host.onWatchStatusChange(createCompilerDiagnostic(message), newLine, compilerOptions || optionsToExtendForConfigFile);
             }
         }
 
@@ -801,8 +804,13 @@ namespace ts {
 
         function reloadFileNamesFromConfigFile() {
             const result = getFileNamesFromConfigSpecs(configFileSpecs, getDirectoryPath(configFileName), compilerOptions, parseConfigFileHost);
-            if (!configFileSpecs.filesSpecs && result.fileNames.length === 0) {
-                host.onConfigFileDiagnostic(getErrorForNoInputFiles(configFileSpecs, configFileName));
+            if (result.fileNames.length) {
+                configFileParsingDiagnostics = filter(configFileParsingDiagnostics, error => !isErrorNoInputFiles(error));
+                hasChangedConfigFileParsingErrors = true;
+            }
+            else if (!configFileSpecs.filesSpecs && !some(configFileParsingDiagnostics, isErrorNoInputFiles)) {
+                configFileParsingDiagnostics = configFileParsingDiagnostics!.concat(getErrorForNoInputFiles(configFileSpecs, configFileName));
+                hasChangedConfigFileParsingErrors = true;
             }
             rootFileNames = result.fileNames;
 
@@ -826,11 +834,15 @@ namespace ts {
         }
 
         function parseConfigFile() {
-            const configParseResult = getParsedCommandLineOfConfigFile(configFileName, optionsToExtendForConfigFile, parseConfigFileHost);
-            rootFileNames = configParseResult.fileNames;
-            compilerOptions = configParseResult.options;
-            configFileSpecs = configParseResult.configFileSpecs;
-            configFileWildCardDirectories = configParseResult.wildcardDirectories;
+            setConfigFileParsingResult(getParsedCommandLineOfConfigFile(configFileName, optionsToExtendForConfigFile, parseConfigFileHost));
+        }
+
+        function setConfigFileParsingResult(configFileParseResult: ParsedCommandLine) {
+            rootFileNames = configFileParseResult.fileNames;
+            compilerOptions = configFileParseResult.options;
+            configFileSpecs = configFileParseResult.configFileSpecs;
+            configFileParsingDiagnostics = getConfigFileParsingDiagnostics(configFileParseResult);
+            hasChangedConfigFileParsingErrors = true;
         }
 
         function onSourceFileChange(fileName: string, eventKind: FileWatcherEventKind, path: Path) {
@@ -876,10 +888,10 @@ namespace ts {
         }
 
         function watchConfigFileWildCardDirectories() {
-            if (configFileWildCardDirectories) {
+            if (configFileSpecs) {
                 updateWatchingWildcardDirectories(
                     watchedWildcardDirectories || (watchedWildcardDirectories = createMap()),
-                    createMapFromTemplate(configFileWildCardDirectories),
+                    createMapFromTemplate(configFileSpecs.wildcardDirectories),
                     watchWildcardDirectory
                 );
             }

src/harness/fourslash.ts

@@ -832,7 +832,12 @@ namespace FourSlash {
             }
         }
 
-        public verifyCompletionsAt(markerName: string, expected: ReadonlyArray<FourSlashInterface.ExpectedCompletionEntry>, options?: FourSlashInterface.CompletionsAtOptions) {
+        public verifyCompletionsAt(markerName: string | ReadonlyArray<string>, expected: ReadonlyArray<FourSlashInterface.ExpectedCompletionEntry>, options?: FourSlashInterface.CompletionsAtOptions) {
+            if (typeof markerName !== "string") {
+                for (const m of markerName) this.verifyCompletionsAt(m, expected, options);
+                return;
+            }
+
             this.goToMarker(markerName);
 
             const actualCompletions = this.getCompletionListAtCaret(options);
@@ -840,8 +845,8 @@ namespace FourSlash {
                 this.raiseError(`No completions at position '${this.currentCaretPosition}'.`);
             }
 
-            if (options && options.isNewIdentifierLocation !== undefined && actualCompletions.isNewIdentifierLocation !== options.isNewIdentifierLocation) {
-                this.raiseError(`Expected 'isNewIdentifierLocation' to be ${options.isNewIdentifierLocation}, got ${actualCompletions.isNewIdentifierLocation}`);
+            if (actualCompletions.isNewIdentifierLocation !== (options && options.isNewIdentifierLocation || false)) {
+                this.raiseError(`Expected 'isNewIdentifierLocation' to be ${options && options.isNewIdentifierLocation}, got ${actualCompletions.isNewIdentifierLocation}`);
             }
 
             const actual = actualCompletions.entries;
@@ -2452,12 +2457,14 @@ Actual: ${stringify(fullActual)}`);
             this.verifyRangeIs(expectedText, includeWhiteSpace);
         }
 
-        public verifyCodeFixAll(options: FourSlashInterface.VerifyCodeFixAllOptions): void {
-            const { fixId, newFileContent } = options;
-            const fixIds = ts.mapDefined(this.getCodeFixes(this.activeFile.fileName), a => a.fixId);
-            ts.Debug.assert(ts.contains(fixIds, fixId), "No available code fix has that group id.", () => `Expected '${fixId}'. Available action ids: ${fixIds}`);
+        public verifyCodeFixAll({ fixId, fixAllDescription, newFileContent, commands: expectedCommands }: FourSlashInterface.VerifyCodeFixAllOptions): void {
+            const fixWithId = ts.find(this.getCodeFixes(this.activeFile.fileName), a => a.fixId === fixId);
+            ts.Debug.assert(fixWithId !== undefined, "No available code fix has that group id.", () =>
+                `Expected '${fixId}'. Available action ids: ${ts.mapDefined(this.getCodeFixes(this.activeFile.fileName), a => a.fixId)}`);
+            ts.Debug.assertEqual(fixWithId.fixAllDescription, fixAllDescription);
+
             const { changes, commands } = this.languageService.getCombinedCodeFix({ type: "file", fileName: this.activeFile.fileName }, fixId, this.formatCodeSettings, ts.defaultPreferences);
-            assert.deepEqual(commands, options.commands);
+            assert.deepEqual(commands, expectedCommands);
             assert(changes.every(c => c.fileName === this.activeFile.fileName), "TODO: support testing codefixes that touch multiple files");
             this.applyChanges(changes);
             this.verifyCurrentFileContent(newFileContent);
@@ -2859,7 +2866,7 @@ Actual: ${stringify(fullActual)}`);
         }
 
         public verifyRangesWithSameTextAreDocumentHighlights() {
-            this.rangesByText().forEach(ranges => this.verifyRangesAreDocumentHighlights(ranges));
+            this.rangesByText().forEach(ranges => this.verifyRangesAreDocumentHighlights(ranges, /*options*/ undefined));
         }
 
         public verifyDocumentHighlightsOf(startRange: Range, ranges: Range[], options: FourSlashInterface.VerifyDocumentHighlightsOptions | undefined) {
@@ -2868,9 +2875,9 @@ Actual: ${stringify(fullActual)}`);
             this.verifyDocumentHighlights(ranges, fileNames);
         }
 
-        public verifyRangesAreDocumentHighlights(ranges?: Range[]) {
+        public verifyRangesAreDocumentHighlights(ranges: Range[] | undefined, options: FourSlashInterface.VerifyDocumentHighlightsOptions | undefined) {
             ranges = ranges || this.getRanges();
-            const fileNames = unique(ranges, range => range.fileName);
+            const fileNames = options && options.filesToSearch || unique(ranges, range => range.fileName);
             for (const range of ranges) {
                 this.goToRangeStart(range);
                 this.verifyDocumentHighlights(ranges, fileNames);
@@ -3182,9 +3189,7 @@ Actual: ${stringify(fullActual)}`);
             eq(item.hasAction, hasAction, "hasAction");
             eq(item.isRecommended, options && options.isRecommended, "isRecommended");
             eq(item.insertText, options && options.insertText, "insertText");
-            if (options && options.replacementSpan) { // TODO: GH#21679
-                eq(item.replacementSpan, options && options.replacementSpan && ts.createTextSpanFromRange(options.replacementSpan), "replacementSpan");
-            }
+            eq(item.replacementSpan, options && options.replacementSpan && ts.createTextSpanFromRange(options.replacementSpan), "replacementSpan");
         }
 
         private findFile(indexOrName: string | number) {
@@ -3988,7 +3993,7 @@ namespace FourSlashInterface {
             super(state);
         }
 
-        public completionsAt(markerName: string, completions: ReadonlyArray<ExpectedCompletionEntry>, options?: CompletionsAtOptions) {
+        public completionsAt(markerName: string | ReadonlyArray<string>, completions: ReadonlyArray<ExpectedCompletionEntry>, options?: CompletionsAtOptions) {
             this.state.verifyCompletionsAt(markerName, completions, options);
         }
 
@@ -4271,8 +4276,8 @@ namespace FourSlashInterface {
             this.state.verifyRangesAreRenameLocations(options);
         }
 
-        public rangesAreDocumentHighlights(ranges?: FourSlash.Range[]) {
-            this.state.verifyRangesAreDocumentHighlights(ranges);
+        public rangesAreDocumentHighlights(ranges?: FourSlash.Range[], options?: VerifyDocumentHighlightsOptions) {
+            this.state.verifyRangesAreDocumentHighlights(ranges, options);
         }
 
         public rangesWithSameTextAreDocumentHighlights() {
@@ -4658,6 +4663,7 @@ namespace FourSlashInterface {
 
     export interface VerifyCodeFixAllOptions {
         fixId: string;
+        fixAllDescription: string;
         newFileContent: string;
         commands: ReadonlyArray<{}>;
     }

src/harness/unittests/printer.ts

@@ -63,6 +63,8 @@ namespace ts {
             // github #18071
             printsCorrectly("regularExpressionLiteral", {}, printer => printer.printFile(createSourceFile("source.ts", "let regex = /abc/;", ScriptTarget.ES2017)));
 
+            // github #22239
+            printsCorrectly("importStatementRemoveComments", { removeComments: true }, printer => printer.printFile(createSourceFile("source.ts", "import {foo} from 'foo';", ScriptTarget.ESNext)));
             printsCorrectly("classHeritageClauses", {}, printer => printer.printFile(createSourceFile(
                 "source.ts",
                 `class A extends B implements C implements D {}`,

src/harness/unittests/tscWatchMode.ts

@@ -72,22 +72,29 @@ namespace ts.tscWatch {
         checkOutputDoesNotContain(host, expectedNonAffectedFiles);
     }
 
+    const elapsedRegex = /^Elapsed:: [0-9]+ms/;
     function checkOutputErrors(
         host: WatchedSystem,
-        preErrorsWatchDiagnostic: DiagnosticMessage | undefined,
+        logsBeforeWatchDiagnostic: string[] | undefined,
+        preErrorsWatchDiagnostic: DiagnosticMessage,
+        logsBeforeErrors: string[] | undefined,
         errors: ReadonlyArray<Diagnostic>,
+        disableConsoleClears?: boolean | undefined,
         ...postErrorsWatchDiagnostics: DiagnosticMessage[]
     ) {
+        let screenClears = 0;
         const outputs = host.getOutput();
-        const expectedOutputCount = (preErrorsWatchDiagnostic ? 1 : 0) + errors.length + postErrorsWatchDiagnostics.length;
-        assert.equal(outputs.length, expectedOutputCount);
+        const expectedOutputCount = 1 + errors.length + postErrorsWatchDiagnostics.length +
+            (logsBeforeWatchDiagnostic ? logsBeforeWatchDiagnostic.length : 0) + (logsBeforeErrors ? logsBeforeErrors.length : 0);
+        assert.equal(outputs.length, expectedOutputCount, JSON.stringify(outputs));
         let index = 0;
-        if (preErrorsWatchDiagnostic) {
-            assertWatchDiagnostic(preErrorsWatchDiagnostic);
-        }
+        forEach(logsBeforeWatchDiagnostic, log => assertLog("logsBeforeWatchDiagnostic", log));
+        assertWatchDiagnostic(preErrorsWatchDiagnostic);
+        forEach(logsBeforeErrors, log => assertLog("logBeforeError", log));
         // Verify errors
         forEach(errors, assertDiagnostic);
         forEach(postErrorsWatchDiagnostics, assertWatchDiagnostic);
+        assert.equal(host.screenClears.length, screenClears, "Expected number of screen clears");
         host.clearOutput();
 
         function assertDiagnostic(diagnostic: Diagnostic) {
@@ -96,8 +103,18 @@ namespace ts.tscWatch {
             index++;
         }
 
+        function assertLog(caption: string, expected: string) {
+            const actual = outputs[index];
+            assert.equal(actual.replace(elapsedRegex, ""), expected.replace(elapsedRegex, ""), getOutputAtFailedMessage(caption, expected));
+            index++;
+        }
+
         function assertWatchDiagnostic(diagnosticMessage: DiagnosticMessage) {
             const expected = getWatchDiagnosticWithoutDate(diagnosticMessage);
+            if (!disableConsoleClears && diagnosticMessage.code !== Diagnostics.Compilation_complete_Watching_for_file_changes.code) {
+                assert.equal(host.screenClears[screenClears], index, `Expected screen clear at this diagnostic: ${expected}`);
+                screenClears++;
+            }
             assert.isTrue(endsWith(outputs[index], expected), getOutputAtFailedMessage("Watch diagnostic", expected));
             index++;
         }
@@ -111,20 +128,16 @@ namespace ts.tscWatch {
         }
     }
 
-    function checkOutputErrorsInitial(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>) {
-        checkOutputErrors(host, Diagnostics.Starting_compilation_in_watch_mode, errors, Diagnostics.Compilation_complete_Watching_for_file_changes);
+    function checkOutputErrorsInitial(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>, disableConsoleClears?: boolean, logsBeforeErrors?: string[]) {
+        checkOutputErrors(host, /*logsBeforeWatchDiagnostic*/ undefined, Diagnostics.Starting_compilation_in_watch_mode, logsBeforeErrors, errors, disableConsoleClears, Diagnostics.Compilation_complete_Watching_for_file_changes);
     }
 
-    function checkOutputErrorsInitialWithConfigErrors(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>) {
-        checkOutputErrors(host, /*preErrorsWatchDiagnostic*/ undefined, errors, Diagnostics.Starting_compilation_in_watch_mode, Diagnostics.Compilation_complete_Watching_for_file_changes);
+    function checkOutputErrorsIncremental(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>, disableConsoleClears?: boolean, logsBeforeWatchDiagnostic?: string[], logsBeforeErrors?: string[]) {
+        checkOutputErrors(host, logsBeforeWatchDiagnostic, Diagnostics.File_change_detected_Starting_incremental_compilation, logsBeforeErrors, errors, disableConsoleClears, Diagnostics.Compilation_complete_Watching_for_file_changes);
     }
 
-    function checkOutputErrorsIncremental(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>) {
-        checkOutputErrors(host, Diagnostics.File_change_detected_Starting_incremental_compilation, errors, Diagnostics.Compilation_complete_Watching_for_file_changes);
-    }
-
-    function checkOutputErrorsIncrementalWithExit(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>, expectedExitCode: ExitStatus) {
-        checkOutputErrors(host, Diagnostics.File_change_detected_Starting_incremental_compilation, errors);
+    function checkOutputErrorsIncrementalWithExit(host: WatchedSystem, errors: ReadonlyArray<Diagnostic>, expectedExitCode: ExitStatus, disableConsoleClears?: boolean, logsBeforeWatchDiagnostic?: string[], logsBeforeErrors?: string[]) {
+        checkOutputErrors(host, logsBeforeWatchDiagnostic, Diagnostics.File_change_detected_Starting_incremental_compilation, logsBeforeErrors, errors, disableConsoleClears);
         assert.equal(host.exitCode, expectedExitCode);
     }
 
@@ -897,7 +910,7 @@ namespace ts.tscWatch {
 
             const host = createWatchedSystem([file, configFile, libFile]);
             const watch = createWatchOfConfigFile(configFile.path, host);
-            checkOutputErrorsInitialWithConfigErrors(host, [
+            checkOutputErrorsInitial(host, [
                 getUnknownCompilerOption(watch(), configFile, "foo"),
                 getUnknownCompilerOption(watch(), configFile, "allowJS")
             ]);
@@ -2183,30 +2196,32 @@ declare module "fs" {
                 path: "f.ts",
                 content: ""
             };
-            const files = [file];
+            const files = [file, libFile];
+            const disableConsoleClear = options.diagnostics || options.extendedDiagnostics || options.preserveWatchOutput;
             const host = createWatchedSystem(files);
-            let clearCount: number | undefined;
-            checkConsoleClears();
-
             createWatchOfFilesAndCompilerOptions([file.path], host, options);
-            checkConsoleClears();
+            checkOutputErrorsInitial(host, emptyArray, disableConsoleClear, options.extendedDiagnostics && [
+                "Current directory: / CaseSensitiveFileNames: false\n",
+                "Synchronizing program\n",
+                "CreatingProgramWith::\n",
+                "  roots: [\"f.ts\"]\n",
+                "  options: {\"extendedDiagnostics\":true}\n",
+                "FileWatcher:: Added:: WatchInfo: f.ts 250 \n",
+                "FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 \n"
+            ]);
 
             file.content = "//";
             host.reloadFS(files);
             host.runQueuedTimeoutCallbacks();
-
-            checkConsoleClears();
-
-            function checkConsoleClears() {
-                if (clearCount === undefined || options.preserveWatchOutput) {
-                    clearCount = 0;
-                }
-                else if (!options.diagnostics && !options.extendedDiagnostics) {
-                    clearCount++;
-                }
-                host.checkScreenClears(clearCount);
-                return clearCount;
-            }
+            checkOutputErrorsIncremental(host, emptyArray, disableConsoleClear, options.extendedDiagnostics && [
+                "FileWatcher:: Triggered with /f.ts1:: WatchInfo: f.ts 250 \n",
+                "Elapsed:: 0ms FileWatcher:: Triggered with /f.ts1:: WatchInfo: f.ts 250 \n"
+            ], options.extendedDiagnostics && [
+                "Synchronizing program\n",
+                "CreatingProgramWith::\n",
+                "  roots: [\"f.ts\"]\n",
+                "  options: {\"extendedDiagnostics\":true}\n"
+            ]);
         }
 
         it("without --diagnostics or --extendedDiagnostics", () => {
@@ -2358,6 +2373,50 @@ declare module "fs" {
             it("uses non recursive dynamic polling when renaming file in subfolder", () => {
                 verifyRenamingFileInSubFolder(TestFSWithWatch.Tsc_WatchDirectory.DynamicPolling);
             });
+
+            it("when there are symlinks to folders in recursive folders", () => {
+                const cwd = "/home/user/projects/myproject";
+                const file1: FileOrFolder = {
+                    path: `${cwd}/src/file.ts`,
+                    content: `import * as a from "a"`
+                };
+                const tsconfig: FileOrFolder = {
+                    path: `${cwd}/tsconfig.json`,
+                    content: `{ "compilerOptions": { "extendedDiagnostics": true, "traceResolution": true }}`
+                };
+                const realA: FileOrFolder = {
+                    path: `${cwd}/node_modules/reala/index.d.ts`,
+                    content: `export {}`
+                };
+                const realB: FileOrFolder = {
+                    path: `${cwd}/node_modules/realb/index.d.ts`,
+                    content: `export {}`
+                };
+                const symLinkA: FileOrFolder = {
+                    path: `${cwd}/node_modules/a`,
+                    symLink: `${cwd}/node_modules/reala`
+                };
+                const symLinkB: FileOrFolder = {
+                    path: `${cwd}/node_modules/b`,
+                    symLink: `${cwd}/node_modules/realb`
+                };
+                const symLinkBInA: FileOrFolder = {
+                    path: `${cwd}/node_modules/reala/node_modules/b`,
+                    symLink: `${cwd}/node_modules/b`
+                };
+                const symLinkAInB: FileOrFolder = {
+                    path: `${cwd}/node_modules/realb/node_modules/a`,
+                    symLink: `${cwd}/node_modules/a`
+                };
+                const files = [file1, tsconfig, realA, realB, symLinkA, symLinkB, symLinkBInA, symLinkAInB];
+                const environmentVariables = createMap<string>();
+                environmentVariables.set("TSC_WATCHDIRECTORY", TestFSWithWatch.Tsc_WatchDirectory.NonRecursiveWatchDirectory);
+                const host = createWatchedSystem(files, { environmentVariables, currentDirectory: cwd });
+                createWatchOfConfigFile("tsconfig.json", host);
+                checkWatchedDirectories(host, emptyArray, /*recursive*/ true);
+                checkWatchedDirectories(host, [cwd, `${cwd}/node_modules`, `${cwd}/node_modules/@types`, `${cwd}/node_modules/reala`, `${cwd}/node_modules/realb`,
+                    `${cwd}/node_modules/reala/node_modules`, `${cwd}/node_modules/realb/node_modules`, `${cwd}/src`], /*recursive*/ false);
+            });
         });
     });
 }

src/harness/virtualFileSystemWithWatch.ts

@@ -288,7 +288,7 @@ interface Array<T> {}`
         private toPath: (f: string) => Path;
         private timeoutCallbacks = new Callbacks();
         private immediateCallbacks = new Callbacks();
-        private screenClears = 0;
+        readonly screenClears: number[] = [];
 
         readonly watchedDirectories = createMultiMap<TestDirectoryWatcher>();
         readonly watchedDirectoriesRecursive = createMultiMap<TestDirectoryWatcher>();
@@ -312,18 +312,20 @@ interface Array<T> {}`
                 const watchDirectory: HostWatchDirectory = (directory, cb) => this.watchFile(directory, () => cb(directory), PollingInterval.Medium);
                 this.customRecursiveWatchDirectory = createRecursiveDirectoryWatcher({
                     directoryExists: path => this.directoryExists(path),
-                    getAccessileSortedChildDirectories: path => this.getDirectories(path),
+                    getAccessibleSortedChildDirectories: path => this.getDirectories(path),
                     filePathComparer: this.useCaseSensitiveFileNames ? compareStringsCaseSensitive : compareStringsCaseInsensitive,
-                    watchDirectory
+                    watchDirectory,
+                    realpath: s => this.realpath(s)
                 });
             }
             else if (tscWatchDirectory === Tsc_WatchDirectory.NonRecursiveWatchDirectory) {
                 const watchDirectory: HostWatchDirectory = (directory, cb) => this.watchDirectory(directory, fileName => cb(fileName), /*recursive*/ false);
                 this.customRecursiveWatchDirectory = createRecursiveDirectoryWatcher({
                     directoryExists: path => this.directoryExists(path),
-                    getAccessileSortedChildDirectories: path => this.getDirectories(path),
+                    getAccessibleSortedChildDirectories: path => this.getDirectories(path),
                     filePathComparer: this.useCaseSensitiveFileNames ? compareStringsCaseSensitive : compareStringsCaseInsensitive,
-                    watchDirectory
+                    watchDirectory,
+                    realpath: s => this.realpath(s)
                 });
             }
             else if (tscWatchDirectory === Tsc_WatchDirectory.DynamicPolling) {
@@ -331,9 +333,10 @@ interface Array<T> {}`
                 const watchDirectory: HostWatchDirectory = (directory, cb) => watchFile(directory, () => cb(directory), PollingInterval.Medium);
                 this.customRecursiveWatchDirectory = createRecursiveDirectoryWatcher({
                     directoryExists: path => this.directoryExists(path),
-                    getAccessileSortedChildDirectories: path => this.getDirectories(path),
+                    getAccessibleSortedChildDirectories: path => this.getDirectories(path),
                     filePathComparer: this.useCaseSensitiveFileNames ? compareStringsCaseSensitive : compareStringsCaseInsensitive,
-                    watchDirectory
+                    watchDirectory,
+                    realpath: s => this.realpath(s)
                 });
             }
         }
@@ -649,7 +652,7 @@ interface Array<T> {}`
 
             const realpath = this.realpath(path);
             if (path !== realpath) {
-                return this.getRealFsEntry(isFsEntry, realpath as Path);
+                return this.getRealFsEntry(isFsEntry, this.toPath(realpath));
             }
 
             return undefined;
@@ -778,7 +781,7 @@ interface Array<T> {}`
         }
 
         clearScreen(): void {
-            this.screenClears += 1;
+            this.screenClears.push(this.output.length);
         }
 
         checkTimeoutQueueLengthAndRun(expected: number) {
@@ -818,10 +821,6 @@ interface Array<T> {}`
             this.immediateCallbacks.unregister(timeoutId);
         }
 
-        checkScreenClears(expected: number): void {
-            assert.equal(this.screenClears, expected);
-        }
-
         createDirectory(directoryName: string): void {
             const folder = this.toFolder(directoryName);
 
@@ -855,6 +854,7 @@ interface Array<T> {}`
 
         clearOutput() {
             clear(this.output);
+            this.screenClears.length = 0;
         }
 
         realpath(s: string): string {

src/lib/dom.generated.d.ts

@@ -3285,6 +3285,7 @@ interface DOMTokenList {
     contains(token: string): boolean;
     item(index: number): string | null;
     remove(...tokens: string[]): void;
+    replace(oldToken: string, newToken: string): void;
     toString(): string;
     toggle(token: string, force?: boolean): boolean;
     [index: number]: string;
@@ -3532,10 +3533,10 @@ interface DocumentEventMap extends GlobalEventHandlersEventMap {
     "submit": Event;
     "suspend": Event;
     "timeupdate": Event;
-    "touchcancel": Event;
-    "touchend": Event;
-    "touchmove": Event;
-    "touchstart": Event;
+    "touchcancel": TouchEvent;
+    "touchend": TouchEvent;
+    "touchmove": TouchEvent;
+    "touchstart": TouchEvent;
     "volumechange": Event;
     "waiting": Event;
     "webkitfullscreenchange": Event;
@@ -3949,10 +3950,10 @@ interface Document extends Node, GlobalEventHandlers, ParentNode, DocumentEvent
      * @param ev The event.
      */
     ontimeupdate: ((this: Document, ev: Event) => any) | null;
-    ontouchcancel: ((this: Document, ev: Event) => any) | null;
-    ontouchend: ((this: Document, ev: Event) => any) | null;
-    ontouchmove: ((this: Document, ev: Event) => any) | null;
-    ontouchstart: ((this: Document, ev: Event) => any) | null;
+    ontouchcancel: ((this: Document, ev: TouchEvent) => any) | null;
+    ontouchend: ((this: Document, ev: TouchEvent) => any) | null;
+    ontouchmove: ((this: Document, ev: TouchEvent) => any) | null;
+    ontouchstart: ((this: Document, ev: TouchEvent) => any) | null;
     onvisibilitychange: (this: Document, ev: Event) => any;
     /**
      * Occurs when the volume is changed, or playback is muted or unmuted.
@@ -4138,6 +4139,7 @@ interface Document extends Node, GlobalEventHandlers, ParentNode, DocumentEvent
      * @param y The y-offset
      */
     elementFromPoint(x: number, y: number): Element;
+    elementsFromPoint(x: number, y: number): Element[];
     evaluate(expression: string, contextNode: Node, resolver: XPathNSResolver | null, type: number, result: XPathResult | null): XPathResult;
     /**
      * Executes a command on the current document, current selection, or the given range.
@@ -4312,6 +4314,7 @@ interface DocumentEvent {
     createEvent(eventInterface: "SpeechSynthesisEvent"): SpeechSynthesisEvent;
     createEvent(eventInterface: "StorageEvent"): StorageEvent;
     createEvent(eventInterface: "TextEvent"): TextEvent;
+    createEvent(eventInterface: "TouchEvent"): TouchEvent;
     createEvent(eventInterface: "TrackEvent"): TrackEvent;
     createEvent(eventInterface: "TransitionEvent"): TransitionEvent;
     createEvent(eventInterface: "UIEvent"): UIEvent;
@@ -4431,10 +4434,10 @@ interface ElementEventMap extends GlobalEventHandlersEventMap {
     "MSPointerOut": Event;
     "MSPointerOver": Event;
     "MSPointerUp": Event;
-    "touchcancel": Event;
-    "touchend": Event;
-    "touchmove": Event;
-    "touchstart": Event;
+    "touchcancel": TouchEvent;
+    "touchend": TouchEvent;
+    "touchmove": TouchEvent;
+    "touchstart": TouchEvent;
     "webkitfullscreenchange": Event;
     "webkitfullscreenerror": Event;
 }
@@ -4473,10 +4476,10 @@ interface Element extends Node, GlobalEventHandlers, ElementTraversal, ParentNod
     onmspointerout: ((this: Element, ev: Event) => any) | null;
     onmspointerover: ((this: Element, ev: Event) => any) | null;
     onmspointerup: ((this: Element, ev: Event) => any) | null;
-    ontouchcancel: ((this: Element, ev: Event) => any) | null;
-    ontouchend: ((this: Element, ev: Event) => any) | null;
-    ontouchmove: ((this: Element, ev: Event) => any) | null;
-    ontouchstart: ((this: Element, ev: Event) => any) | null;
+    ontouchcancel: ((this: Element, ev: TouchEvent) => any) | null;
+    ontouchend: ((this: Element, ev: TouchEvent) => any) | null;
+    ontouchmove: ((this: Element, ev: TouchEvent) => any) | null;
+    ontouchstart: ((this: Element, ev: TouchEvent) => any) | null;
     onwebkitfullscreenchange: ((this: Element, ev: Event) => any) | null;
     onwebkitfullscreenerror: ((this: Element, ev: Event) => any) | null;
     outerHTML: string;
@@ -6131,6 +6134,7 @@ interface HTMLImageElement extends HTMLElement {
     readonly complete: boolean;
     crossOrigin: string | null;
     readonly currentSrc: string;
+    decoding: "async" | "sync" | "auto";
     /**
      * Sets or retrieves the height of the object.
      */
@@ -14742,7 +14746,7 @@ interface WebSocket extends EventTarget {
     readonly readyState: number;
     readonly url: string;
     close(code?: number, reason?: string): void;
-    send(data: string | ArrayBuffer | Blob | ArrayBufferView): void;
+    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
     readonly CLOSED: number;
     readonly CLOSING: number;
     readonly CONNECTING: number;
@@ -14868,10 +14872,10 @@ interface WindowEventMap extends GlobalEventHandlersEventMap {
     "submit": Event;
     "suspend": Event;
     "timeupdate": Event;
-    "touchcancel": Event;
-    "touchend": Event;
-    "touchmove": Event;
-    "touchstart": Event;
+    "touchcancel": TouchEvent;
+    "touchend": TouchEvent;
+    "touchmove": TouchEvent;
+    "touchstart": TouchEvent;
     "unload": Event;
     "volumechange": Event;
     "vrdisplayactivate": Event;
@@ -15059,6 +15063,7 @@ interface Window extends EventTarget, WindowTimers, WindowSessionStorage, Window
     msWriteProfilerMark(profilerMarkName: string): void;
     open(url?: string, target?: string, features?: string, replace?: boolean): Window | null;
     postMessage(message: any, targetOrigin: string, transfer?: any[]): void;
+    print(): void;
     prompt(message?: string, _default?: string): string | null;
     releaseEvents(): void;
     requestAnimationFrame(callback: FrameRequestCallback): number;
@@ -15868,6 +15873,7 @@ declare function moveTo(x?: number, y?: number): void;
 declare function msWriteProfilerMark(profilerMarkName: string): void;
 declare function open(url?: string, target?: string, features?: string, replace?: boolean): Window | null;
 declare function postMessage(message: any, targetOrigin: string, transfer?: any[]): void;
+declare function print(): void;
 declare function prompt(message?: string, _default?: string): string | null;
 declare function releaseEvents(): void;
 declare function requestAnimationFrame(callback: FrameRequestCallback): number;

src/lib/es2015.collection.d.ts

@@ -10,7 +10,7 @@ interface Map<K, V> {
 
 interface MapConstructor {
     new (): Map<any, any>;
-    new <K, V>(entries?: ReadonlyArray<[K, V]>): Map<K, V>;
+    new <K, V>(entries?: ReadonlyArray<[K, V]> | null): Map<K, V>;
     readonly prototype: Map<any, any>;
 }
 declare var Map: MapConstructor;
@@ -31,7 +31,7 @@ interface WeakMap<K extends object, V> {
 
 interface WeakMapConstructor {
     new (): WeakMap<object, any>;
-    new <K extends object, V>(entries?: ReadonlyArray<[K, V]>): WeakMap<K, V>;
+    new <K extends object, V>(entries?: ReadonlyArray<[K, V]> | null): WeakMap<K, V>;
     readonly prototype: WeakMap<object, any>;
 }
 declare var WeakMap: WeakMapConstructor;
@@ -47,7 +47,7 @@ interface Set<T> {
 
 interface SetConstructor {
     new (): Set<any>;
-    new <T>(values?: ReadonlyArray<T>): Set<T>;
+    new <T>(values?: ReadonlyArray<T> | null): Set<T>;
     readonly prototype: Set<any>;
 }
 declare var Set: SetConstructor;
@@ -66,7 +66,7 @@ interface WeakSet<T extends object> {
 
 interface WeakSetConstructor {
     new (): WeakSet<object>;
-    new <T extends object>(values?: ReadonlyArray<T>): WeakSet<T>;
+    new <T extends object>(values?: ReadonlyArray<T> | null): WeakSet<T>;
     readonly prototype: WeakSet<object>;
 }
 declare var WeakSet: WeakSetConstructor;

src/lib/webworker.generated.d.ts

@@ -1443,7 +1443,7 @@ interface WebSocket extends EventTarget {
     readonly readyState: number;
     readonly url: string;
     close(code?: number, reason?: string): void;
-    send(data: string | ArrayBuffer | Blob | ArrayBufferView): void;
+    send(data: string | ArrayBufferLike | Blob | ArrayBufferView): void;
     readonly CLOSED: number;
     readonly CLOSING: number;
     readonly CONNECTING: number;

src/server/client.ts

@@ -557,7 +557,7 @@ namespace ts.server {
             const request = this.processRequest<protocol.CodeFixRequest>(CommandNames.GetCodeFixes, args);
             const response = this.processResponse<protocol.CodeFixResponse>(request);
 
-            return response.body.map(({ description, changes, fixId }) => ({ description, changes: this.convertChanges(changes, file), fixId }));
+            return response.body.map(({ description, changes, fixId, fixAllDescription }) => ({ description, changes: this.convertChanges(changes, file), fixId, fixAllDescription }));
         }
 
         getCombinedCodeFix = notImplemented;

src/server/protocol.ts

@@ -1701,6 +1701,8 @@ namespace ts.server.protocol {
          * This may be omitted to indicate that the code fix can't be applied in a group.
          */
         fixId?: {};
+        /** Should be present if and only if 'fixId' is. */
+        fixAllDescription?: string;
     }
 
     /**

src/server/session.ts

@@ -1723,9 +1723,9 @@ namespace ts.server {
             return { startPosition, endPosition };
         }
 
-        private mapCodeAction(project: Project, { description, changes: unmappedChanges, commands, fixId }: CodeFixAction): protocol.CodeFixAction {
+        private mapCodeAction(project: Project, { description, changes: unmappedChanges, commands, fixId, fixAllDescription }: CodeFixAction): protocol.CodeFixAction {
             const changes = unmappedChanges.map(change => this.mapTextChangesToCodeEditsUsingScriptinfo(change, project.getScriptInfoForNormalizedPath(toNormalizedPath(change.fileName))));
-            return { description, changes, commands, fixId };
+            return { description, changes, commands, fixId, fixAllDescription };
         }
 
         private mapTextChangesToCodeEdits(project: Project, textChanges: ReadonlyArray<FileTextChanges>): protocol.FileCodeEdits[] {

src/services/codeFixProvider.ts

@@ -27,6 +27,25 @@ namespace ts {
         const codeFixRegistrations: CodeFixRegistration[][] = [];
         const fixIdToRegistration = createMap<CodeFixRegistration>();
 
+        type DiagnosticAndArguments = DiagnosticMessage | [DiagnosticMessage, string] | [DiagnosticMessage, string, string];
+        function diagnosticToString(diag: DiagnosticAndArguments): string {
+            return isArray(diag)
+                ? formatStringFromArgs(getLocaleSpecificMessage(diag[0]), diag.slice(1) as ReadonlyArray<string>)
+                : getLocaleSpecificMessage(diag);
+        }
+
+        export function createCodeFixActionNoFixId(changes: FileTextChanges[], description: DiagnosticAndArguments) {
+            return createCodeFixActionWorker(diagnosticToString(description), changes, /*fixId*/ undefined, /*fixAllDescription*/ undefined);
+        }
+
+        export function createCodeFixAction(changes: FileTextChanges[], description: DiagnosticAndArguments, fixId: {}, fixAllDescription: DiagnosticAndArguments, command?: CodeActionCommand): CodeFixAction {
+            return createCodeFixActionWorker(diagnosticToString(description), changes, fixId, diagnosticToString(fixAllDescription), command);
+        }
+
+        function createCodeFixActionWorker(description: string, changes: FileTextChanges[], fixId?: {}, fixAllDescription?: string, command?: CodeActionCommand): CodeFixAction {
+            return { description, changes, fixId, fixAllDescription, commands: command ? [command] : undefined };
+        }
+
         export function registerCodeFix(reg: CodeFixRegistration) {
             for (const error of reg.errorCodes) {
                 let registrations = codeFixRegistrations[error];

src/services/codefixes/addMissingInvocationForDecorator.ts

@@ -6,7 +6,7 @@ namespace ts.codefix {
         errorCodes,
         getCodeActions: (context) => {
             const changes = textChanges.ChangeTracker.with(context, t => makeChange(t, context.sourceFile, context.span.start));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Call_decorator_expression), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Call_decorator_expression, fixId, Diagnostics.Add_to_all_uncalled_decorators)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => makeChange(changes, diag.file!, diag.start!)),

src/services/codefixes/annotateWithTypeFromJSDoc.ts

@@ -7,9 +7,8 @@ namespace ts.codefix {
         getCodeActions(context) {
             const decl = getDeclaration(context.sourceFile, context.span.start);
             if (!decl) return;
-            const description = getLocaleSpecificMessage(Diagnostics.Annotate_with_type_from_JSDoc);
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, context.sourceFile, decl));
-            return [{ description, changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Annotate_with_type_from_JSDoc, fixId, Diagnostics.Annotate_everything_with_types_from_JSDoc)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {

src/services/codefixes/convertFunctionToEs6Class.ts

@@ -6,7 +6,7 @@ namespace ts.codefix {
         errorCodes,
         getCodeActions(context: CodeFixContext) {
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, context.sourceFile, context.span.start, context.program.getTypeChecker()));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Convert_function_to_an_ES2015_class), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Convert_function_to_an_ES2015_class, fixId, Diagnostics.Convert_all_constructor_functions_to_classes)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, err) => doChange(changes, err.file!, err.start, context.program.getTypeChecker())),

src/services/codefixes/convertToEs6Module.ts

@@ -3,7 +3,6 @@ namespace ts.codefix {
     registerCodeFix({
         errorCodes: [Diagnostics.File_is_a_CommonJS_module_it_may_be_converted_to_an_ES6_module.code],
         getCodeActions(context) {
-            const description = getLocaleSpecificMessage(Diagnostics.Convert_to_ES6_module);
             const { sourceFile, program } = context;
             const changes = textChanges.ChangeTracker.with(context, changes => {
                 const moduleExportsChangedToDefault = convertFileToEs6Module(sourceFile, program.getTypeChecker(), changes, program.getCompilerOptions().target);
@@ -14,14 +13,13 @@ namespace ts.codefix {
                 }
             });
             // No support for fix-all since this applies to the whole file at once anyway.
-            return [{ description, changes, fixId: undefined }];
+            return [createCodeFixActionNoFixId(changes, Diagnostics.Convert_to_ES6_module)];
         },
     });
 
     function fixImportOfModuleExports(importingFile: SourceFile, exportingFile: SourceFile, changes: textChanges.ChangeTracker) {
         for (const moduleSpecifier of importingFile.imports) {
-            const { text } = moduleSpecifier;
-            const imported = getResolvedModule(importingFile, text);
+            const imported = getResolvedModule(importingFile, moduleSpecifier.text);
             if (!imported || imported.resolvedFileName !== exportingFile.fileName) {
                 continue;
             }
@@ -29,7 +27,7 @@ namespace ts.codefix {
             const importNode = importFromModuleSpecifier(moduleSpecifier);
             switch (importNode.kind) {
                 case SyntaxKind.ImportEqualsDeclaration:
-                    changes.replaceNode(importingFile, importNode, makeImport(importNode.name, /*namedImports*/ undefined, text));
+                    changes.replaceNode(importingFile, importNode, makeImport(importNode.name, /*namedImports*/ undefined, moduleSpecifier));
                     break;
                 case SyntaxKind.CallExpression:
                     if (isRequireCall(importNode, /*checkArgumentIsStringLiteralLike*/ false)) {
@@ -111,7 +109,7 @@ namespace ts.codefix {
                     case SyntaxKind.CallExpression: {
                         if (isRequireCall(expression, /*checkArgumentIsStringLiteralLike*/ true)) {
                             // For side-effecting require() call, just make a side-effecting import.
-                            changes.replaceNode(sourceFile, statement, makeImport(/*name*/ undefined, /*namedImports*/ undefined, expression.arguments[0].text));
+                            changes.replaceNode(sourceFile, statement, makeImport(/*name*/ undefined, /*namedImports*/ undefined, expression.arguments[0]));
                         }
                         return false;
                     }
@@ -139,11 +137,11 @@ namespace ts.codefix {
             }
             if (isRequireCall(initializer, /*checkArgumentIsStringLiteralLike*/ true)) {
                 foundImport = true;
-                return convertSingleImport(sourceFile, name, initializer.arguments[0].text, changes, checker, identifiers, target);
+                return convertSingleImport(sourceFile, name, initializer.arguments[0], changes, checker, identifiers, target);
             }
             else if (isPropertyAccessExpression(initializer) && isRequireCall(initializer.expression, /*checkArgumentIsStringLiteralLike*/ true)) {
                 foundImport = true;
-                return convertPropertyAccessImport(name, initializer.name.text, initializer.expression.arguments[0].text, identifiers);
+                return convertPropertyAccessImport(name, initializer.name.text, initializer.expression.arguments[0], identifiers);
             }
             else {
                 // Move it out to its own variable statement.
@@ -157,7 +155,7 @@ namespace ts.codefix {
     }
 
     /** Converts `const name = require("moduleSpecifier").propertyName` */
-    function convertPropertyAccessImport(name: BindingName, propertyName: string, moduleSpecifier: string, identifiers: Identifiers): ReadonlyArray<Node> {
+    function convertPropertyAccessImport(name: BindingName, propertyName: string, moduleSpecifier: StringLiteralLike, identifiers: Identifiers): ReadonlyArray<Node> {
         switch (name.kind) {
             case SyntaxKind.ObjectBindingPattern:
             case SyntaxKind.ArrayBindingPattern: {
@@ -257,7 +255,7 @@ namespace ts.codefix {
             changes.replaceNodeWithNodes(sourceFile, statement, newNodes);
         }
         else {
-            changes.replaceNode(sourceFile, statement, convertExportsDotXEquals(text, right), { useNonAdjustedEndPosition: true });
+            changes.replaceNode(sourceFile, statement, convertExportsDotXEquals(text, right));
         }
     }
 
@@ -340,7 +338,7 @@ namespace ts.codefix {
     function convertSingleImport(
         file: SourceFile,
         name: BindingName,
-        moduleSpecifier: string,
+        moduleSpecifier: StringLiteralLike,
         changes: textChanges.ChangeTracker,
         checker: TypeChecker,
         identifiers: Identifiers,
@@ -362,7 +360,7 @@ namespace ts.codefix {
                 import x from "x";
                 const [a, b, c] = x;
                 */
-                const tmp = makeUniqueName(moduleSpecifierToValidIdentifier(moduleSpecifier, target), identifiers);
+                const tmp = makeUniqueName(moduleSpecifierToValidIdentifier(moduleSpecifier.text, target), identifiers);
                 return [
                     makeImport(createIdentifier(tmp), /*namedImports*/ undefined, moduleSpecifier),
                     makeConst(/*modifiers*/ undefined, getSynthesizedDeepClone(name), createIdentifier(tmp)),
@@ -379,7 +377,7 @@ namespace ts.codefix {
      * Convert `import x = require("x").`
      * Also converts uses like `x.y()` to `y()` and uses a named import.
      */
-    function convertSingleIdentifierImport(file: SourceFile, name: Identifier, moduleSpecifier: string, changes: textChanges.ChangeTracker, checker: TypeChecker, identifiers: Identifiers): ReadonlyArray<Node> {
+    function convertSingleIdentifierImport(file: SourceFile, name: Identifier, moduleSpecifier: StringLiteralLike, changes: textChanges.ChangeTracker, checker: TypeChecker, identifiers: Identifiers): ReadonlyArray<Node> {
         const nameSymbol = checker.getSymbolAtLocation(name);
         // Maps from module property name to name actually used. (The same if there isn't shadowing.)
         const namedBindingsNames = createMap<string>();
@@ -486,14 +484,14 @@ namespace ts.codefix {
             getSynthesizedDeepClones(cls.members));
     }
 
-    function makeSingleImport(localName: string, propertyName: string, moduleSpecifier: string): ImportDeclaration {
+    function makeSingleImport(localName: string, propertyName: string, moduleSpecifier: StringLiteralLike): ImportDeclaration {
         return propertyName === "default"
             ? makeImport(createIdentifier(localName), /*namedImports*/ undefined, moduleSpecifier)
             : makeImport(/*name*/ undefined, [makeImportSpecifier(propertyName, localName)], moduleSpecifier);
     }
 
-    function makeImport(name: Identifier | undefined, namedImports: ReadonlyArray<ImportSpecifier> | undefined, moduleSpecifier: string): ImportDeclaration {
-        return makeImportDeclaration(name, namedImports, createLiteral(moduleSpecifier));
+    function makeImport(name: Identifier | undefined, namedImports: ReadonlyArray<ImportSpecifier> | undefined, moduleSpecifier: StringLiteralLike): ImportDeclaration {
+        return makeImportDeclaration(name, namedImports, moduleSpecifier);
     }
 
     export function makeImportDeclaration(name: Identifier, namedImports: ReadonlyArray<ImportSpecifier> | undefined, moduleSpecifier: Expression) {

src/services/codefixes/correctQualifiedNameToIndexedAccessType.ts

@@ -8,8 +8,8 @@ namespace ts.codefix {
             const qualifiedName = getQualifiedName(context.sourceFile, context.span.start);
             if (!qualifiedName) return undefined;
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, context.sourceFile, qualifiedName));
-            const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Rewrite_as_the_indexed_access_type_0), [`${qualifiedName.left.text}["${qualifiedName.right.text}"]`]);
-            return [{ description, changes, fixId }];
+            const newText = `${qualifiedName.left.text}["${qualifiedName.right.text}"]`;
+            return [createCodeFixAction(changes, [Diagnostics.Rewrite_as_the_indexed_access_type_0, newText], fixId, Diagnostics.Rewrite_all_as_indexed_access_types)];
         },
         fixIds: [fixId],
         getAllCodeActions: (context) => codeFixAll(context, errorCodes, (changes, diag) => {

src/services/codefixes/disableJsDiagnostics.ts

@@ -16,23 +16,18 @@ namespace ts.codefix {
             }
 
             const fixes: CodeFixAction[] = [
-                {
-                    description: getLocaleSpecificMessage(Diagnostics.Disable_checking_for_this_file),
-                    changes: [createFileTextChanges(sourceFile.fileName, [
+                // fixId unnecessary because adding `// @ts-nocheck` even once will ignore every error in the file.
+                createCodeFixActionNoFixId(
+                    [createFileTextChanges(sourceFile.fileName, [
                         createTextChange(sourceFile.checkJsDirective
                             ? createTextSpanFromBounds(sourceFile.checkJsDirective.pos, sourceFile.checkJsDirective.end)
                             : createTextSpan(0, 0), `// @ts-nocheck${getNewLineOrDefaultFromHost(host, formatContext.options)}`),
                     ])],
-                    // fixId unnecessary because adding `// @ts-nocheck` even once will ignore every error in the file.
-                    fixId: undefined,
-                }];
+                    Diagnostics.Disable_checking_for_this_file),
+            ];
 
-            if (isValidSuppressLocation(sourceFile, span.start)) {
-                fixes.unshift({
-                    description: getLocaleSpecificMessage(Diagnostics.Ignore_this_error_message),
-                    changes: textChanges.ChangeTracker.with(context, t => makeChange(t, sourceFile, span.start)),
-                    fixId,
-                });
+            if (textChanges.isValidLocationToAddComment(sourceFile, span.start)) {
+                fixes.unshift(createCodeFixAction(textChanges.ChangeTracker.with(context, t => makeChange(t, sourceFile, span.start)), Diagnostics.Ignore_this_error_message, fixId, Diagnostics.Add_ts_ignore_to_all_error_messages));
             }
 
             return fixes;
@@ -41,37 +36,18 @@ namespace ts.codefix {
         getAllCodeActions: context => {
             const seenLines = createMap<true>();
             return codeFixAll(context, errorCodes, (changes, diag) => {
-                if (isValidSuppressLocation(diag.file!, diag.start!)) {
+                if (textChanges.isValidLocationToAddComment(diag.file!, diag.start!)) {
                     makeChange(changes, diag.file!, diag.start!, seenLines);
                 }
             });
         },
     });
 
-    function isValidSuppressLocation(sourceFile: SourceFile, position: number) {
-        return !isInComment(sourceFile, position) && !isInString(sourceFile, position) && !isInTemplateString(sourceFile, position);
-    }
-
     function makeChange(changes: textChanges.ChangeTracker, sourceFile: SourceFile, position: number, seenLines?: Map<true>) {
         const { line: lineNumber } = getLineAndCharacterOfPosition(sourceFile, position);
-
         // Only need to add `// @ts-ignore` for a line once.
-        if (seenLines && !addToSeen(seenLines, lineNumber)) {
-            return;
+        if (!seenLines || addToSeen(seenLines, lineNumber)) {
+            changes.insertCommentBeforeLine(sourceFile, lineNumber, position, " @ts-ignore");
         }
-
-        const lineStartPosition = getStartPositionOfLine(lineNumber, sourceFile);
-        const startPosition = getFirstNonSpaceCharacterPosition(sourceFile.text, lineStartPosition);
-
-        // First try to see if we can put the '// @ts-ignore' on the previous line.
-        // We need to make sure that we are not in the middle of a string literal or a comment.
-        // If so, we do not want to separate the node from its comment if we can.
-        // Otherwise, add an extra new line immediately before the error span.
-        const insertAtLineStart = isValidSuppressLocation(sourceFile, startPosition);
-
-        const token = getTouchingToken(sourceFile, insertAtLineStart ? startPosition : position, /*includeJsDocComment*/ false);
-        const clone = setStartsOnNewLine(getSynthesizedDeepClone(token), true);
-        addSyntheticLeadingComment(clone, SyntaxKind.SingleLineCommentTrivia, " @ts-ignore");
-        changes.replaceNode(sourceFile, token, clone, { preserveLeadingWhitespace: true, prefix: insertAtLineStart ? undefined : changes.newLineCharacter });
     }
 }

src/services/codefixes/fixAddMissingMember.ts

@@ -46,7 +46,7 @@ namespace ts.codefix {
         },
     });
 
-    interface Info { token: Identifier; classDeclaration: ClassLikeDeclaration; makeStatic: boolean; classDeclarationSourceFile: SourceFile; inJs: boolean; call: CallExpression; }
+    interface Info { token: Identifier; classDeclaration: ClassLikeDeclaration; makeStatic: boolean; classDeclarationSourceFile: SourceFile; inJs: boolean; call: CallExpression | undefined; }
     function getInfo(tokenSourceFile: SourceFile, tokenPos: number, checker: TypeChecker): Info | undefined {
         // The identifier of the missing property. eg:
         // this.missing = 1;
@@ -56,50 +56,26 @@ namespace ts.codefix {
             return undefined;
         }
 
-        const classAndMakeStatic = getClassAndMakeStatic(token, checker);
-        if (!classAndMakeStatic) {
-            return undefined;
-        }
-        const { classDeclaration, makeStatic } = classAndMakeStatic;
+        const { parent } = token;
+        if (!isPropertyAccessExpression(parent)) return undefined;
+
+        const leftExpressionType = skipConstraint(checker.getTypeAtLocation(parent.expression));
+        const { symbol } = leftExpressionType;
+        const classDeclaration = symbol && symbol.declarations && find(symbol.declarations, isClassLike);
+        if (!classDeclaration) return undefined;
+
+        const makeStatic = (leftExpressionType as TypeReference).target !== checker.getDeclaredTypeOfSymbol(symbol);
         const classDeclarationSourceFile = classDeclaration.getSourceFile();
-        const inJs = isInJavaScriptFile(classDeclarationSourceFile);
-        const call = tryCast(token.parent.parent, isCallExpression);
+        const inJs = isSourceFileJavaScript(classDeclarationSourceFile);
+        const call = tryCast(parent.parent, isCallExpression);
 
         return { token, classDeclaration, makeStatic, classDeclarationSourceFile, inJs, call };
     }
 
-    function getClassAndMakeStatic(token: Node, checker: TypeChecker): { readonly classDeclaration: ClassLikeDeclaration, readonly makeStatic: boolean } | undefined {
-        const { parent } = token;
-        if (!isPropertyAccessExpression(parent)) {
-            return undefined;
-        }
-
-        if (parent.expression.kind === SyntaxKind.ThisKeyword) {
-            const containingClassMemberDeclaration = getThisContainer(token, /*includeArrowFunctions*/ false);
-            if (!isClassElement(containingClassMemberDeclaration)) {
-                return undefined;
-            }
-            const classDeclaration = containingClassMemberDeclaration.parent;
-            // Property accesses on `this` in a static method are accesses of a static member.
-            return isClassLike(classDeclaration) ? { classDeclaration, makeStatic: hasModifier(containingClassMemberDeclaration, ModifierFlags.Static) } : undefined;
-        }
-        else {
-            const leftExpressionType = checker.getTypeAtLocation(parent.expression);
-            const { symbol } = leftExpressionType;
-            if (!(symbol && leftExpressionType.flags & TypeFlags.Object && symbol.flags & SymbolFlags.Class)) {
-                return undefined;
-            }
-            const classDeclaration = cast(first(symbol.declarations), isClassLike);
-            // The expression is a class symbol but the type is not the instance-side.
-            return { classDeclaration, makeStatic: leftExpressionType !== checker.getDeclaredTypeOfSymbol(symbol) };
-        }
-    }
-
     function getActionsForAddMissingMemberInJavaScriptFile(context: CodeFixContext, classDeclarationSourceFile: SourceFile, classDeclaration: ClassLikeDeclaration, tokenName: string, makeStatic: boolean): CodeFixAction | undefined {
         const changes = textChanges.ChangeTracker.with(context, t => addMissingMemberInJs(t, classDeclarationSourceFile, classDeclaration, tokenName, makeStatic));
-        if (changes.length === 0) return undefined;
-        const description = formatStringFromArgs(getLocaleSpecificMessage(makeStatic ? Diagnostics.Initialize_static_property_0 : Diagnostics.Initialize_property_0_in_the_constructor), [tokenName]);
-        return { description, changes, fixId };
+        return changes.length === 0 ? undefined
+            : createCodeFixAction(changes, [makeStatic ? Diagnostics.Initialize_static_property_0 : Diagnostics.Initialize_property_0_in_the_constructor, tokenName], fixId, Diagnostics.Add_all_missing_members);
     }
 
     function addMissingMemberInJs(changeTracker: textChanges.ChangeTracker, classDeclarationSourceFile: SourceFile, classDeclaration: ClassLikeDeclaration, tokenName: string, makeStatic: boolean): void {
@@ -143,9 +119,8 @@ namespace ts.codefix {
     }
 
     function createAddPropertyDeclarationAction(context: CodeFixContext, classDeclarationSourceFile: SourceFile, classDeclaration: ClassLikeDeclaration, makeStatic: boolean, tokenName: string, typeNode: TypeNode): CodeFixAction {
-        const description = formatStringFromArgs(getLocaleSpecificMessage(makeStatic ? Diagnostics.Declare_static_property_0 : Diagnostics.Declare_property_0), [tokenName]);
         const changes = textChanges.ChangeTracker.with(context, t => addPropertyDeclaration(t, classDeclarationSourceFile, classDeclaration, tokenName, typeNode, makeStatic));
-        return { description, changes, fixId };
+        return createCodeFixAction(changes, [makeStatic ? Diagnostics.Declare_static_property_0 : Diagnostics.Declare_property_0, tokenName], fixId, Diagnostics.Add_all_missing_members);
     }
 
     function addPropertyDeclaration(changeTracker: textChanges.ChangeTracker, classDeclarationSourceFile: SourceFile, classDeclaration: ClassLikeDeclaration, tokenName: string, typeNode: TypeNode, makeStatic: boolean): void {
@@ -178,7 +153,7 @@ namespace ts.codefix {
 
         const changes = textChanges.ChangeTracker.with(context, t => t.insertNodeAtClassStart(classDeclarationSourceFile, classDeclaration, indexSignature));
         // No fixId here because code-fix-all currently only works on adding individual named properties.
-        return { description: formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_index_signature_for_property_0), [tokenName]), changes, fixId: undefined };
+        return createCodeFixActionNoFixId(changes, [Diagnostics.Add_index_signature_for_property_0, tokenName]);
     }
 
     function getActionForMethodDeclaration(
@@ -191,9 +166,8 @@ namespace ts.codefix {
         inJs: boolean,
         preferences: UserPreferences,
     ): CodeFixAction | undefined {
-        const description = formatStringFromArgs(getLocaleSpecificMessage(makeStatic ? Diagnostics.Declare_static_method_0 : Diagnostics.Declare_method_0), [token.text]);
         const changes = textChanges.ChangeTracker.with(context, t => addMethodDeclaration(t, classDeclarationSourceFile, classDeclaration, token, callExpression, makeStatic, inJs, preferences));
-        return { description, changes, fixId };
+        return createCodeFixAction(changes, [makeStatic ? Diagnostics.Declare_static_method_0 : Diagnostics.Declare_method_0, token.text], fixId, Diagnostics.Add_all_missing_members);
     }
 
     function addMethodDeclaration(

src/services/codefixes/fixAwaitInSyncFunction.ts

@@ -12,7 +12,7 @@ namespace ts.codefix {
             const nodes = getNodes(sourceFile, span.start);
             if (!nodes) return undefined;
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, nodes));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Add_async_modifier_to_containing_function), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Add_async_modifier_to_containing_function, fixId, Diagnostics.Add_all_missing_async_modifiers)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {

src/services/codefixes/fixCannotFindModule.ts

@@ -5,38 +5,27 @@ namespace ts.codefix {
     registerCodeFix({
         errorCodes,
         getCodeActions: context => {
-            const codeAction = tryGetCodeActionForInstallPackageTypes(context.host, context.sourceFile.fileName, getModuleName(context.sourceFile, context.span.start));
-            return codeAction && [{ fixId, ...codeAction }];
+            const { host, sourceFile, span: { start } } = context;
+            const packageName = getTypesPackageNameToInstall(host, sourceFile, start);
+            return packageName === undefined ? []
+                : [createCodeFixAction(/*changes*/ [], [Diagnostics.Install_0, packageName], fixId, Diagnostics.Install_all_missing_types_packages, getCommand(sourceFile.fileName, packageName))];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (_, diag, commands) => {
-            const pkg = getTypesPackageNameToInstall(context.host, getModuleName(diag.file, diag.start));
+            const pkg = getTypesPackageNameToInstall(context.host, diag.file, diag.start);
             if (pkg) {
                 commands.push(getCommand(diag.file.fileName, pkg));
             }
         }),
     });
 
-    function getModuleName(sourceFile: SourceFile, pos: number): string {
-        return cast(getTokenAtPosition(sourceFile, pos, /*includeJsDocComment*/ false), isStringLiteral).text;
-    }
-
     function getCommand(fileName: string, packageName: string): InstallPackageAction {
         return { type: "install package", file: fileName, packageName };
     }
 
-    function getTypesPackageNameToInstall(host: LanguageServiceHost, moduleName: string): string | undefined {
+    function getTypesPackageNameToInstall(host: LanguageServiceHost, sourceFile: SourceFile, pos: number): string | undefined {
+        const moduleName = cast(getTokenAtPosition(sourceFile, pos, /*includeJsDocComment*/ false), isStringLiteral).text;
         const { packageName } = getPackageName(moduleName);
-        // If !registry, registry not available yet, can't do anything.
         return host.isKnownTypesPackageName(packageName) ? getTypesPackageName(packageName) : undefined;
     }
-
-    function tryGetCodeActionForInstallPackageTypes(host: LanguageServiceHost, fileName: string, moduleName: string): CodeAction | undefined {
-        const packageName = getTypesPackageNameToInstall(host, moduleName);
-        return packageName === undefined ? undefined : {
-            description: formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Install_0), [packageName]),
-            changes: [],
-            commands: [getCommand(fileName, packageName)],
-        };
-    }
 }

src/services/codefixes/fixClassDoesntImplementInheritedAbstractMember.ts

@@ -11,7 +11,7 @@ namespace ts.codefix {
             const { program, sourceFile, span } = context;
             const changes = textChanges.ChangeTracker.with(context, t =>
                 addMissingMembers(getClass(sourceFile, span.start), sourceFile, program.getTypeChecker(), t, context.preferences));
-            return changes.length === 0 ? undefined : [{ description: getLocaleSpecificMessage(Diagnostics.Implement_inherited_abstract_class), changes, fixId }];
+            return changes.length === 0 ? undefined : [createCodeFixAction(changes, Diagnostics.Implement_inherited_abstract_class, fixId, Diagnostics.Implement_all_inherited_abstract_classes)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => {

src/services/codefixes/fixClassIncorrectlyImplementsInterface.ts

@@ -11,9 +11,7 @@ namespace ts.codefix {
             const checker = program.getTypeChecker();
             return mapDefined<ExpressionWithTypeArguments, CodeFixAction>(getClassImplementsHeritageClauseElements(classDeclaration), implementedTypeNode => {
                 const changes = textChanges.ChangeTracker.with(context, t => addMissingDeclarations(checker, implementedTypeNode, sourceFile, classDeclaration, t, context.preferences));
-                if (changes.length === 0) return undefined;
-                const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Implement_interface_0), [implementedTypeNode.getText()]);
-                return { description, changes, fixId };
+                return changes.length === 0 ? undefined : createCodeFixAction(changes, [Diagnostics.Implement_interface_0, implementedTypeNode.getText(sourceFile)], fixId, Diagnostics.Implement_all_unimplemented_interfaces);
             });
         },
         fixIds: [fixId],
@@ -50,10 +48,10 @@ namespace ts.codefix {
 
         const classType = checker.getTypeAtLocation(classDeclaration);
 
-        if (!checker.getIndexTypeOfType(classType, IndexKind.Number)) {
+        if (!classType.getNumberIndexType()) {
             createMissingIndexSignatureDeclaration(implementedType, IndexKind.Number);
         }
-        if (!checker.getIndexTypeOfType(classType, IndexKind.String)) {
+        if (!classType.getStringIndexType()) {
             createMissingIndexSignatureDeclaration(implementedType, IndexKind.String);
         }
 

src/services/codefixes/fixClassSuperMustPrecedeThisAccess.ts

@@ -10,7 +10,7 @@ namespace ts.codefix {
             if (!nodes) return undefined;
             const { constructor, superCall } = nodes;
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, constructor, superCall));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Make_super_call_the_first_statement_in_the_constructor), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Make_super_call_the_first_statement_in_the_constructor, fixId, Diagnostics.Make_all_super_calls_the_first_statement_in_their_constructor)];
         },
         fixIds: [fixId],
         getAllCodeActions(context) {

src/services/codefixes/fixConstructorForDerivedNeedSuperCall.ts

@@ -8,7 +8,7 @@ namespace ts.codefix {
             const { sourceFile, span } = context;
             const ctr = getNode(sourceFile, span.start);
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, ctr));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Add_missing_super_call), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Add_missing_super_call, fixId, Diagnostics.Add_all_missing_super_calls)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) =>

src/services/codefixes/fixExtendsInterfaceBecomesImplements.ts

@@ -10,7 +10,7 @@ namespace ts.codefix {
             if (!nodes) return undefined;
             const { extendsToken, heritageClauses } = nodes;
             const changes = textChanges.ChangeTracker.with(context, t => doChanges(t, sourceFile, extendsToken, heritageClauses));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Change_extends_to_implements), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Change_extends_to_implements, fixId, Diagnostics.Change_all_extended_interfaces_to_implements)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {
@@ -27,7 +27,7 @@ namespace ts.codefix {
     }
 
     function doChanges(changes: textChanges.ChangeTracker, sourceFile: SourceFile, extendsToken: Node, heritageClauses: ReadonlyArray<HeritageClause>): void {
-        changes.replaceNode(sourceFile, extendsToken, createToken(SyntaxKind.ImplementsKeyword), textChanges.useNonAdjustedPositions);
+        changes.replaceNode(sourceFile, extendsToken, createToken(SyntaxKind.ImplementsKeyword));
 
         // If there is already an implements clause, replace the implements keyword with a comma.
         if (heritageClauses.length === 2 &&

src/services/codefixes/fixForgottenThisPropertyAccess.ts

@@ -11,7 +11,7 @@ namespace ts.codefix {
                 return undefined;
             }
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, token));
-            return [{ description: getLocaleSpecificMessage(Diagnostics.Add_this_to_unresolved_variable), changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Add_this_to_unresolved_variable, fixId, Diagnostics.Add_this_to_all_unresolved_variables_matching_a_member_name)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {
@@ -30,6 +30,6 @@ namespace ts.codefix {
         }
         // TODO (https://github.com/Microsoft/TypeScript/issues/21246): use shared helper
         suppressLeadingAndTrailingTrivia(token);
-        changes.replaceNode(sourceFile, token, createPropertyAccess(createThis(), token), textChanges.useNonAdjustedPositions);
+        changes.replaceNode(sourceFile, token, createPropertyAccess(createThis(), token));
     }
 }

src/services/codefixes/fixInvalidImportSyntax.ts

@@ -5,7 +5,7 @@ namespace ts.codefix {
         getCodeActions: getActionsForInvalidImport
     });
 
-    function getActionsForInvalidImport(context: CodeFixContext): CodeAction[] | undefined {
+    function getActionsForInvalidImport(context: CodeFixContext): CodeFixAction[] | undefined {
         const sourceFile = context.sourceFile;
 
         // This is the whole import statement, eg:
@@ -19,11 +19,11 @@ namespace ts.codefix {
         return getCodeFixesForImportDeclaration(context, node);
     }
 
-    function getCodeFixesForImportDeclaration(context: CodeFixContext, node: ImportDeclaration) {
+    function getCodeFixesForImportDeclaration(context: CodeFixContext, node: ImportDeclaration): CodeFixAction[] {
         const sourceFile = getSourceFileOfNode(node);
         const namespace = getNamespaceDeclarationNode(node) as NamespaceImport;
         const opts = context.program.getCompilerOptions();
-        const variations: CodeAction[] = [];
+        const variations: CodeFixAction[] = [];
 
         // import Bluebird from "bluebird";
         variations.push(createAction(context, sourceFile, node, makeImportDeclaration(namespace.name, /*namedImports*/ undefined, node.moduleSpecifier)));
@@ -41,13 +41,9 @@ namespace ts.codefix {
         return variations;
     }
 
-    function createAction(context: CodeFixContext, sourceFile: SourceFile, node: Node, replacement: Node): CodeAction {
-        // TODO: GH#21246 Should be able to use `replaceNode`, but be sure to preserve comments (see `codeFixCalledES2015Import11.ts`)
-        const changes = textChanges.ChangeTracker.with(context, t => t.replaceRange(sourceFile, { pos: node.getStart(), end: node.end }, replacement));
-        return {
-            description: formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Replace_import_with_0), [changes[0].textChanges[0].newText]),
-            changes,
-        };
+    function createAction(context: CodeFixContext, sourceFile: SourceFile, node: Node, replacement: Node): CodeFixAction {
+        const changes = textChanges.ChangeTracker.with(context, t => t.replaceNode(sourceFile, node, replacement));
+        return createCodeFixActionNoFixId(changes, [Diagnostics.Replace_import_with_0, changes[0].textChanges[0].newText]);
     }
 
     registerCodeFix({
@@ -58,7 +54,7 @@ namespace ts.codefix {
         getCodeActions: getActionsForUsageOfInvalidImport
     });
 
-    function getActionsForUsageOfInvalidImport(context: CodeFixContext): CodeAction[] | undefined {
+    function getActionsForUsageOfInvalidImport(context: CodeFixContext): CodeFixAction[] | undefined {
         const sourceFile = context.sourceFile;
         const targetKind = Diagnostics.Cannot_invoke_an_expression_whose_type_lacks_a_call_signature_Type_0_has_no_compatible_call_signatures.code === context.errorCode ? SyntaxKind.CallExpression : SyntaxKind.NewExpression;
         const node = findAncestor(getTokenAtPosition(sourceFile, context.span.start, /*includeJsDocComment*/ false), a => a.kind === targetKind && a.getStart() === context.span.start && a.getEnd() === (context.span.start + context.span.length)) as CallExpression | NewExpression;
@@ -70,15 +66,13 @@ namespace ts.codefix {
         if (!(type.symbol && (type.symbol as TransientSymbol).originatingImport)) {
             return [];
         }
-        const fixes: CodeAction[] = [];
+        const fixes: CodeFixAction[] = [];
         const relatedImport = (type.symbol as TransientSymbol).originatingImport;
         if (!isImportCall(relatedImport)) {
             addRange(fixes, getCodeFixesForImportDeclaration(context, relatedImport));
         }
-        fixes.push({
-            description: getLocaleSpecificMessage(Diagnostics.Use_synthetic_default_member),
-            changes: textChanges.ChangeTracker.with(context, t => t.replaceNode(sourceFile, expr, createPropertyAccess(expr, "default"), {})),
-        });
+        const changes = textChanges.ChangeTracker.with(context, t => t.replaceNode(sourceFile, expr, createPropertyAccess(expr, "default"), {}));
+        fixes.push(createCodeFixActionNoFixId(changes, Diagnostics.Use_synthetic_default_member));
         return fixes;
     }
 }

src/services/codefixes/fixJSDocTypes.ts

@@ -12,19 +12,17 @@ namespace ts.codefix {
             if (!info) return undefined;
             const { typeNode, type } = info;
             const original = typeNode.getText(sourceFile);
-            const actions = [fix(type, fixIdPlain)];
+            const actions = [fix(type, fixIdPlain, Diagnostics.Change_all_jsdoc_style_types_to_TypeScript)];
             if (typeNode.kind === SyntaxKind.JSDocNullableType) {
                 // for nullable types, suggest the flow-compatible `T | null | undefined`
                 // in addition to the jsdoc/closure-compatible `T | null`
-                actions.push(fix(checker.getNullableType(type, TypeFlags.Undefined), fixIdNullable));
+                actions.push(fix(checker.getNullableType(type, TypeFlags.Undefined), fixIdNullable, Diagnostics.Change_all_jsdoc_style_types_to_TypeScript_and_add_undefined_to_nullable_types));
             }
             return actions;
 
-            function fix(type: Type, fixId: string): CodeFixAction {
-                const newText = checker.typeToString(type);
-                const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Change_0_to_1), [original, newText]);
+            function fix(type: Type, fixId: string, fixAllDescription: DiagnosticMessage): CodeFixAction {
                 const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, typeNode, type, checker));
-                return { description, changes, fixId };
+                return createCodeFixAction(changes, [Diagnostics.Change_0_to_1, original, checker.typeToString(type)], fixId, fixAllDescription);
             }
         },
         fixIds: [fixIdPlain, fixIdNullable],

src/services/codefixes/fixSpelling.ts

@@ -13,8 +13,7 @@ namespace ts.codefix {
             if (!info) return undefined;
             const { node, suggestion } = info;
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, node, suggestion));
-            const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Change_spelling_to_0), [suggestion]);
-            return [{ description, changes, fixId }];
+            return [createCodeFixAction(changes, [Diagnostics.Change_spelling_to_0, suggestion], fixId, Diagnostics.Fix_all_detected_spelling_errors)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {

src/services/codefixes/fixStrictClassInitialization.ts

@@ -10,27 +10,24 @@ namespace ts.codefix {
             const propertyDeclaration = getPropertyDeclaration(context.sourceFile, context.span.start);
             if (!propertyDeclaration) return;
 
-            const newLineCharacter = getNewLineOrDefaultFromHost(context.host, context.formatContext.options);
             const result = [
                 getActionForAddMissingUndefinedType(context, propertyDeclaration),
-                getActionForAddMissingDefiniteAssignmentAssertion(context, propertyDeclaration, newLineCharacter)
+                getActionForAddMissingDefiniteAssignmentAssertion(context, propertyDeclaration)
             ];
 
-            append(result, getActionForAddMissingInitializer(context, propertyDeclaration, newLineCharacter));
+            append(result, getActionForAddMissingInitializer(context, propertyDeclaration));
 
             return result;
         },
         fixIds: [fixIdAddDefiniteAssignmentAssertions, fixIdAddUndefinedType, fixIdAddInitializer],
         getAllCodeActions: context => {
-            const newLineCharacter = getNewLineOrDefaultFromHost(context.host, context.formatContext.options);
-
             return codeFixAll(context, errorCodes, (changes, diag) => {
                 const propertyDeclaration = getPropertyDeclaration(diag.file, diag.start);
                 if (!propertyDeclaration) return;
 
                 switch (context.fixId) {
                     case fixIdAddDefiniteAssignmentAssertions:
-                        addDefiniteAssignmentAssertion(changes, diag.file, propertyDeclaration, newLineCharacter);
+                        addDefiniteAssignmentAssertion(changes, diag.file, propertyDeclaration);
                         break;
                     case fixIdAddUndefinedType:
                         addUndefinedType(changes, diag.file, propertyDeclaration);
@@ -40,7 +37,7 @@ namespace ts.codefix {
                         const initializer = getInitializer(checker, propertyDeclaration);
                         if (!initializer) return;
 
-                        addInitializer(changes, diag.file, propertyDeclaration, initializer, newLineCharacter);
+                        addInitializer(changes, diag.file, propertyDeclaration, initializer);
                         break;
                     default:
                         Debug.fail(JSON.stringify(context.fixId));
@@ -54,13 +51,12 @@ namespace ts.codefix {
         return isIdentifier(token) ? cast(token.parent, isPropertyDeclaration) : undefined;
     }
 
-    function getActionForAddMissingDefiniteAssignmentAssertion (context: CodeFixContext, propertyDeclaration: PropertyDeclaration, newLineCharacter: string): CodeFixAction {
-        const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_definite_assignment_assertion_to_property_0), [propertyDeclaration.getText()]);
-        const changes = textChanges.ChangeTracker.with(context, t => addDefiniteAssignmentAssertion(t, context.sourceFile, propertyDeclaration, newLineCharacter));
-        return { description, changes, fixId: fixIdAddDefiniteAssignmentAssertions };
+    function getActionForAddMissingDefiniteAssignmentAssertion (context: CodeFixContext, propertyDeclaration: PropertyDeclaration): CodeFixAction {
+        const changes = textChanges.ChangeTracker.with(context, t => addDefiniteAssignmentAssertion(t, context.sourceFile, propertyDeclaration));
+        return createCodeFixAction(changes, [Diagnostics.Add_definite_assignment_assertion_to_property_0, propertyDeclaration.getText()], fixIdAddDefiniteAssignmentAssertions, Diagnostics.Add_definite_assignment_assertions_to_all_uninitialized_properties);
     }
 
-    function addDefiniteAssignmentAssertion(changeTracker: textChanges.ChangeTracker, propertyDeclarationSourceFile: SourceFile, propertyDeclaration: PropertyDeclaration, newLineCharacter: string): void {
+    function addDefiniteAssignmentAssertion(changeTracker: textChanges.ChangeTracker, propertyDeclarationSourceFile: SourceFile, propertyDeclaration: PropertyDeclaration): void {
         const property = updateProperty(
             propertyDeclaration,
             propertyDeclaration.decorators,
@@ -70,13 +66,12 @@ namespace ts.codefix {
             propertyDeclaration.type,
             propertyDeclaration.initializer
         );
-        changeTracker.replaceNode(propertyDeclarationSourceFile, propertyDeclaration, property, { suffix: newLineCharacter });
+        changeTracker.replaceNode(propertyDeclarationSourceFile, propertyDeclaration, property);
     }
 
     function getActionForAddMissingUndefinedType (context: CodeFixContext, propertyDeclaration: PropertyDeclaration): CodeFixAction {
-        const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_undefined_type_to_property_0), [propertyDeclaration.name.getText()]);
         const changes = textChanges.ChangeTracker.with(context, t => addUndefinedType(t, context.sourceFile, propertyDeclaration));
-        return { description, changes, fixId: fixIdAddUndefinedType };
+        return createCodeFixAction(changes, [Diagnostics.Add_undefined_type_to_property_0, propertyDeclaration.name.getText()], fixIdAddUndefinedType, Diagnostics.Add_undefined_type_to_all_uninitialized_properties);
     }
 
     function addUndefinedType(changeTracker: textChanges.ChangeTracker, propertyDeclarationSourceFile: SourceFile, propertyDeclaration: PropertyDeclaration): void {
@@ -85,17 +80,16 @@ namespace ts.codefix {
         changeTracker.replaceNode(propertyDeclarationSourceFile, propertyDeclaration.type, createUnionTypeNode(types));
     }
 
-    function getActionForAddMissingInitializer (context: CodeFixContext, propertyDeclaration: PropertyDeclaration, newLineCharacter: string): CodeFixAction | undefined {
+    function getActionForAddMissingInitializer(context: CodeFixContext, propertyDeclaration: PropertyDeclaration): CodeFixAction | undefined {
         const checker = context.program.getTypeChecker();
         const initializer = getInitializer(checker, propertyDeclaration);
         if (!initializer) return undefined;
 
-        const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Add_initializer_to_property_0), [propertyDeclaration.name.getText()]);
-        const changes = textChanges.ChangeTracker.with(context, t => addInitializer(t, context.sourceFile, propertyDeclaration, initializer, newLineCharacter));
-        return { description, changes, fixId: fixIdAddInitializer };
+        const changes = textChanges.ChangeTracker.with(context, t => addInitializer(t, context.sourceFile, propertyDeclaration, initializer));
+        return createCodeFixAction(changes, [Diagnostics.Add_initializer_to_property_0, propertyDeclaration.name.getText()], fixIdAddInitializer, Diagnostics.Add_initializers_to_all_uninitialized_properties);
     }
 
-    function addInitializer (changeTracker: textChanges.ChangeTracker, propertyDeclarationSourceFile: SourceFile, propertyDeclaration: PropertyDeclaration, initializer: Expression, newLineCharacter: string): void {
+    function addInitializer (changeTracker: textChanges.ChangeTracker, propertyDeclarationSourceFile: SourceFile, propertyDeclaration: PropertyDeclaration, initializer: Expression): void {
         const property = updateProperty(
             propertyDeclaration,
             propertyDeclaration.decorators,
@@ -105,7 +99,7 @@ namespace ts.codefix {
             propertyDeclaration.type,
             initializer
         );
-        changeTracker.replaceNode(propertyDeclarationSourceFile, propertyDeclaration, property, { suffix: newLineCharacter });
+        changeTracker.replaceNode(propertyDeclarationSourceFile, propertyDeclaration, property);
     }
 
     function getInitializer(checker: TypeChecker, propertyDeclaration: PropertyDeclaration): Expression | undefined {

src/services/codefixes/fixUnusedIdentifier.ts

@@ -13,9 +13,8 @@ namespace ts.codefix {
             const { errorCode, sourceFile } = context;
             const importDecl = tryGetFullImport(sourceFile, context.span.start);
             if (importDecl) {
-                const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Remove_import_from_0), [showModuleSpecifier(importDecl)]);
                 const changes = textChanges.ChangeTracker.with(context, t => t.deleteNode(sourceFile, importDecl));
-                return [{ description, changes, fixId: fixIdDelete }];
+                return [createCodeFixAction(changes, [Diagnostics.Remove_import_from_0, showModuleSpecifier(importDecl)], fixIdDelete, Diagnostics.Delete_all_unused_declarations)];
             }
 
             const token = getToken(sourceFile, textSpanEnd(context.span));
@@ -23,14 +22,12 @@ namespace ts.codefix {
 
             const deletion = textChanges.ChangeTracker.with(context, t => tryDeleteDeclaration(t, sourceFile, token));
             if (deletion.length) {
-                const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Remove_declaration_for_Colon_0), [token.getText()]);
-                result.push({ description, changes: deletion, fixId: fixIdDelete });
+                result.push(createCodeFixAction(deletion, [Diagnostics.Remove_declaration_for_Colon_0, token.getText(sourceFile)], fixIdDelete, Diagnostics.Delete_all_unused_declarations));
             }
 
             const prefix = textChanges.ChangeTracker.with(context, t => tryPrefixDeclaration(t, errorCode, sourceFile, token));
             if (prefix.length) {
-                const description = formatStringFromArgs(getLocaleSpecificMessage(Diagnostics.Prefix_0_with_an_underscore), [token.getText()]);
-                result.push({ description, changes: prefix, fixId: fixIdPrefix });
+                result.push(createCodeFixAction(prefix, [Diagnostics.Prefix_0_with_an_underscore, token.getText(sourceFile)], fixIdPrefix, Diagnostics.Prefix_all_unused_declarations_with_where_possible));
             }
 
             return result;
@@ -165,7 +162,7 @@ namespace ts.codefix {
                     // and trailing trivia will remain.
                     suppressLeadingAndTrailingTrivia(newFunction);
 
-                    changes.replaceNode(sourceFile, oldFunction, newFunction, textChanges.useNonAdjustedPositions);
+                    changes.replaceNode(sourceFile, oldFunction, newFunction);
                 }
                 else {
                     changes.deleteNodeInList(sourceFile, parent);

src/services/codefixes/importFixes.ts

@@ -33,10 +33,9 @@ namespace ts.codefix {
         preferences: UserPreferences;
     }
 
-    function createCodeAction(descriptionDiagnostic: DiagnosticMessage, diagnosticArgs: string[], changes: FileTextChanges[]): CodeFixAction {
-        const description = formatMessage.apply(undefined, [undefined, descriptionDiagnostic].concat(<any[]>diagnosticArgs));
+    function createCodeAction(descriptionDiagnostic: DiagnosticMessage, diagnosticArgs: [string, string], changes: FileTextChanges[]): CodeFixAction {
         // TODO: GH#20315
-        return { description, changes, fixId: undefined };
+        return createCodeFixActionNoFixId(changes, [descriptionDiagnostic, ...diagnosticArgs] as [DiagnosticMessage, string, string]);
     }
 
     function convertToImportCodeFixContext(context: CodeFixContext, symbolToken: Node, symbolName: string): ImportCodeFixContext {
@@ -640,13 +639,13 @@ namespace ts.codefix {
         return createCodeAction(Diagnostics.Change_0_to_1, [symbolName, `${namespacePrefix}.${symbolName}`], changes);
     }
 
-    function getImportCodeActions(context: CodeFixContext): CodeAction[] {
+    function getImportCodeActions(context: CodeFixContext): CodeFixAction[] {
         return context.errorCode === Diagnostics._0_refers_to_a_UMD_global_but_the_current_file_is_a_module_Consider_adding_an_import_instead.code
             ? getActionsForUMDImport(context)
             : getActionsForNonUMDImport(context);
     }
 
-    function getActionsForUMDImport(context: CodeFixContext): CodeAction[] {
+    function getActionsForUMDImport(context: CodeFixContext): CodeFixAction[] {
         const token = getTokenAtPosition(context.sourceFile, context.span.start, /*includeJsDocComment*/ false);
         const checker = context.program.getTypeChecker();
 
@@ -702,7 +701,7 @@ namespace ts.codefix {
         }
     }
 
-    function getActionsForNonUMDImport(context: CodeFixContext): CodeAction[] | undefined {
+    function getActionsForNonUMDImport(context: CodeFixContext): CodeFixAction[] | undefined {
         // This will always be an Identifier, since the diagnostics we fix only fail on identifiers.
         const { sourceFile, span, program, cancellationToken } = context;
         const checker = program.getTypeChecker();

src/services/codefixes/inferFromUsage.ts

@@ -33,10 +33,8 @@ namespace ts.codefix {
             const token = getTokenAtPosition(sourceFile, start, /*includeJsDocComment*/ false);
             let declaration!: Declaration;
             const changes = textChanges.ChangeTracker.with(context, changes => { declaration = doChange(changes, sourceFile, token, errorCode, program, cancellationToken); });
-            if (changes.length === 0) return undefined;
-            const name = getNameOfDeclaration(declaration).getText();
-            const description = formatStringFromArgs(getLocaleSpecificMessage(getDiagnostic(errorCode, token)), [name]);
-            return [{ description, changes, fixId }];
+            return changes.length === 0 ? undefined
+                : [createCodeFixAction(changes, [getDiagnostic(errorCode, token), getNameOfDeclaration(declaration).getText(sourceFile)], fixId, Diagnostics.Infer_all_types_from_usage)];
         },
         fixIds: [fixId],
         getAllCodeActions(context) {
@@ -60,7 +58,7 @@ namespace ts.codefix {
     }
 
     function doChange(changes: textChanges.ChangeTracker, sourceFile: SourceFile, token: Node, errorCode: number, program: Program, cancellationToken: CancellationToken, seenFunctions?: Map<true>): Declaration | undefined {
-        if (!isAllowedTokenKind(token.kind)) {
+        if (!isParameterPropertyModifier(token.kind) && token.kind !== SyntaxKind.Identifier && token.kind !== SyntaxKind.DotDotDotToken) {
             return undefined;
         }
 
@@ -127,20 +125,6 @@ namespace ts.codefix {
         }
     }
 
-    function isAllowedTokenKind(kind: SyntaxKind): boolean {
-        switch (kind) {
-            case SyntaxKind.Identifier:
-            case SyntaxKind.DotDotDotToken:
-            case SyntaxKind.PublicKeyword:
-            case SyntaxKind.PrivateKeyword:
-            case SyntaxKind.ProtectedKeyword:
-            case SyntaxKind.ReadonlyKeyword:
-                return true;
-            default:
-                return false;
-        }
-    }
-
     function annotateVariableDeclaration(changes: textChanges.ChangeTracker, sourceFile: SourceFile, declaration: VariableDeclaration | PropertyDeclaration | PropertySignature, program: Program, cancellationToken: CancellationToken): void {
         if (isIdentifier(declaration.name)) {
             annotate(changes, sourceFile, declaration, inferTypeForVariableFromUsage(declaration.name, program, cancellationToken), program);

src/services/codefixes/useDefaultImport.ts

@@ -8,9 +8,8 @@ namespace ts.codefix {
             const { sourceFile, span: { start } } = context;
             const info = getInfo(sourceFile, start);
             if (!info) return undefined;
-            const description = getLocaleSpecificMessage(Diagnostics.Convert_to_default_import);
             const changes = textChanges.ChangeTracker.with(context, t => doChange(t, sourceFile, info));
-            return [{ description, changes, fixId }];
+            return [createCodeFixAction(changes, Diagnostics.Convert_to_default_import, fixId, Diagnostics.Convert_all_to_default_imports)];
         },
         fixIds: [fixId],
         getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => {
@@ -38,6 +37,6 @@ namespace ts.codefix {
     }
 
     function doChange(changes: textChanges.ChangeTracker, sourceFile: SourceFile, info: Info): void {
-        changes.replaceNode(sourceFile, info.importNode, makeImportDeclaration(info.name, /*namedImports*/ undefined, info.moduleSpecifier), textChanges.useNonAdjustedPositions);
+        changes.replaceNode(sourceFile, info.importNode, makeImportDeclaration(info.name, /*namedImports*/ undefined, info.moduleSpecifier));
     }
 }

src/services/completions.ts

@@ -86,11 +86,11 @@ namespace ts.Completions {
             case StringLiteralCompletionKind.Properties: {
                 const entries: CompletionEntry[] = [];
                 getCompletionEntriesFromSymbols(completion.symbols, entries, sourceFile, sourceFile, checker, ScriptTarget.ESNext, log, CompletionKind.String, preferences); // Target will not be used, so arbitrary
-                return { isGlobalCompletion: false, isMemberCompletion: true, isNewIdentifierLocation: true, entries };
+                return { isGlobalCompletion: false, isMemberCompletion: true, isNewIdentifierLocation: completion.hasIndexSignature, entries };
             }
             case StringLiteralCompletionKind.Types: {
-                const entries = completion.types.map(type => ({ name: type.value, kindModifiers: ScriptElementKindModifier.none, kind: ScriptElementKind.variableElement, sortText: "0" }));
-                return { isGlobalCompletion: false, isMemberCompletion: false, isNewIdentifierLocation: true, entries };
+                const entries = completion.types.map(type => ({ name: type.value, kindModifiers: ScriptElementKindModifier.none, kind: ScriptElementKind.typeElement, sortText: "0" }));
+                return { isGlobalCompletion: false, isMemberCompletion: false, isNewIdentifierLocation: false, entries };
             }
             default:
                 return Debug.assertNever(completion);
@@ -360,9 +360,14 @@ namespace ts.Completions {
     }
 
     const enum StringLiteralCompletionKind { Paths, Properties, Types }
+    interface StringLiteralCompletionsFromProperties {
+        readonly kind: StringLiteralCompletionKind.Properties;
+        readonly symbols: ReadonlyArray<Symbol>;
+        readonly hasIndexSignature: boolean;
+    }
     type StringLiteralCompletion =
         | { readonly kind: StringLiteralCompletionKind.Paths, readonly paths: ReadonlyArray<PathCompletions.PathCompletion> }
-        | { readonly kind: StringLiteralCompletionKind.Properties, readonly symbols: ReadonlyArray<Symbol> }
+        | StringLiteralCompletionsFromProperties
         | { readonly kind: StringLiteralCompletionKind.Types, readonly types: ReadonlyArray<StringLiteralType> };
     function getStringLiteralCompletionEntries(sourceFile: SourceFile, node: StringLiteralLike, position: number, typeChecker: TypeChecker, compilerOptions: CompilerOptions, host: LanguageServiceHost): StringLiteralCompletion | undefined {
         switch (node.parent.kind) {
@@ -377,7 +382,7 @@ namespace ts.Completions {
                         //          bar: string;
                         //      }
                         //      let x: Foo["/*completion position*/"]
-                        return { kind: StringLiteralCompletionKind.Properties, symbols: typeChecker.getTypeFromTypeNode((node.parent.parent as IndexedAccessTypeNode).objectType).getApparentProperties() };
+                        return stringLiteralCompletionsFromProperties(typeChecker.getTypeFromTypeNode((node.parent.parent as IndexedAccessTypeNode).objectType));
                     default:
                         return undefined;
                 }
@@ -396,8 +401,7 @@ namespace ts.Completions {
                     //      foo({
                     //          '/*completion position*/'
                     //      });
-                    const type = typeChecker.getContextualType(node.parent.parent);
-                    return { kind: StringLiteralCompletionKind.Properties, symbols: type && type.getApparentProperties() };
+                    return stringLiteralCompletionsFromProperties(typeChecker.getContextualType(node.parent.parent));
                 }
                 return fromContextualType();
 
@@ -410,7 +414,7 @@ namespace ts.Completions {
                     // }
                     // let a: A;
                     // a['/*completion position*/']
-                    return { kind: StringLiteralCompletionKind.Properties, symbols: typeChecker.getTypeAtLocation(expression).getApparentProperties() };
+                    return stringLiteralCompletionsFromProperties(typeChecker.getTypeAtLocation(expression));
                 }
                 return undefined;
             }
@@ -454,13 +458,16 @@ namespace ts.Completions {
         }
     }
 
-    function getStringLiteralTypes(type: Type, typeChecker: TypeChecker, uniques = createMap<true>()): ReadonlyArray<StringLiteralType> {
-        if (type && type.flags & TypeFlags.TypeParameter) {
-            type = type.getConstraint();
-        }
-        return type && type.flags & TypeFlags.Union
+    function stringLiteralCompletionsFromProperties(type: Type | undefined): StringLiteralCompletionsFromProperties | undefined {
+        return type && { kind: StringLiteralCompletionKind.Properties, symbols: type.getApparentProperties(), hasIndexSignature: hasIndexSignature(type) };
+    }
+
+    function getStringLiteralTypes(type: Type | undefined, typeChecker: TypeChecker, uniques = createMap<true>()): ReadonlyArray<StringLiteralType> | undefined {
+        if (!type) return emptyArray;
+        type = skipConstraint(type);
+        return type.flags & TypeFlags.Union
             ? flatMap((<UnionType>type).types, t => getStringLiteralTypes(t, typeChecker, uniques))
-            : type && type.flags & TypeFlags.StringLiteral && !(type.flags & TypeFlags.EnumLiteral) && addToSeen(uniques, (type as StringLiteralType).value)
+            : type.flags & TypeFlags.StringLiteral && !(type.flags & TypeFlags.EnumLiteral) && addToSeen(uniques, (type as StringLiteralType).value)
             ? [type as StringLiteralType]
             : emptyArray;
     }
@@ -531,6 +538,15 @@ namespace ts.Completions {
     ): CompletionEntryDetails {
         const typeChecker = program.getTypeChecker();
         const { name } = entryId;
+
+        const contextToken = findPrecedingToken(position, sourceFile);
+        if (isInString(sourceFile, position, contextToken)) {
+            const stringLiteralCompletions = !contextToken || !isStringLiteralLike(contextToken)
+                ? undefined
+                : getStringLiteralCompletionEntries(sourceFile, contextToken, position, typeChecker, compilerOptions, host);
+            return stringLiteralCompletions && stringLiteralCompletionDetails(name, contextToken, stringLiteralCompletions, sourceFile, typeChecker);
+        }
+
         // Compute all the completion symbols again.
         const symbolCompletion = getSymbolCompletionFromEntryId(typeChecker, log, compilerOptions, sourceFile, position, entryId, allSourceFiles);
         switch (symbolCompletion.type) {
@@ -550,29 +566,40 @@ namespace ts.Completions {
             case "symbol": {
                 const { symbol, location, symbolToOriginInfoMap, previousToken } = symbolCompletion;
                 const { codeActions, sourceDisplay } = getCompletionEntryCodeActionsAndSourceDisplay(symbolToOriginInfoMap, symbol, program, typeChecker, host, compilerOptions, sourceFile, previousToken, formatContext, getCanonicalFileName, allSourceFiles, preferences);
-                const kindModifiers = SymbolDisplay.getSymbolModifiers(symbol);
-                const { displayParts, documentation, symbolKind, tags } = SymbolDisplay.getSymbolDisplayPartsDocumentationAndSymbolKind(typeChecker, symbol, sourceFile, location, location, SemanticMeaning.All);
-                return { name, kindModifiers, kind: symbolKind, displayParts, documentation, tags, codeActions, source: sourceDisplay };
+                return createCompletionDetailsForSymbol(symbol, typeChecker, sourceFile, location, codeActions, sourceDisplay);
             }
-            case "none": {
+            case "none":
                 // Didn't find a symbol with this name.  See if we can find a keyword instead.
-                if (allKeywordsCompletions().some(c => c.name === name)) {
-                    return {
-                        name,
-                        kind: ScriptElementKind.keyword,
-                        kindModifiers: ScriptElementKindModifier.none,
-                        displayParts: [displayPart(name, SymbolDisplayPartKind.keyword)],
-                        documentation: undefined,
-                        tags: undefined,
-                        codeActions: undefined,
-                        source: undefined,
-                    };
-                }
-                return undefined;
-            }
+                return allKeywordsCompletions().some(c => c.name === name) ? createCompletionDetails(name, ScriptElementKindModifier.none, ScriptElementKind.keyword, [displayPart(name, SymbolDisplayPartKind.keyword)]) : undefined;
         }
     }
 
+    function createCompletionDetailsForSymbol(symbol: Symbol, checker: TypeChecker, sourceFile: SourceFile, location: Node, codeActions?: CodeAction[], sourceDisplay?: SymbolDisplayPart[]): CompletionEntryDetails {
+        const { displayParts, documentation, symbolKind, tags } = SymbolDisplay.getSymbolDisplayPartsDocumentationAndSymbolKind(checker, symbol, sourceFile, location, location, SemanticMeaning.All);
+        return createCompletionDetails(symbol.name, SymbolDisplay.getSymbolModifiers(symbol), symbolKind, displayParts, documentation, tags, codeActions, sourceDisplay);
+    }
+
+    function stringLiteralCompletionDetails(name: string, location: Node, completion: StringLiteralCompletion, sourceFile: SourceFile, checker: TypeChecker): CompletionEntryDetails | undefined {
+        switch (completion.kind) {
+            case StringLiteralCompletionKind.Paths: {
+                const match = find(completion.paths, p => p.name === name);
+                return match && createCompletionDetails(name, ScriptElementKindModifier.none, match.kind, [textPart(name)]);
+            }
+            case StringLiteralCompletionKind.Properties: {
+                const match = find(completion.symbols, s => s.name === name);
+                return match && createCompletionDetailsForSymbol(match, checker, sourceFile, location);
+            }
+            case StringLiteralCompletionKind.Types:
+                return find(completion.types, t => t.value === name) ? createCompletionDetails(name, ScriptElementKindModifier.none, ScriptElementKind.typeElement, [textPart(name)]) : undefined;
+            default:
+                return Debug.assertNever(completion);
+        }
+    }
+
+    function createCompletionDetails(name: string, kindModifiers: string, kind: ScriptElementKind, displayParts: SymbolDisplayPart[], documentation?: SymbolDisplayPart[], tags?: JSDocTagInfo[], codeActions?: CodeAction[], source?: SymbolDisplayPart[]): CompletionEntryDetails {
+        return { name, kindModifiers, kind, displayParts, documentation, tags, codeActions, source };
+    }
+
     interface CodeActionsAndSourceDisplay {
         readonly codeActions: CodeAction[] | undefined;
         readonly sourceDisplay: SymbolDisplayPart[] | undefined;
@@ -1031,6 +1058,8 @@ namespace ts.Completions {
         }
 
         function addTypeProperties(type: Type): void {
+            isNewIdentifierLocation = hasIndexSignature(type);
+
             if (isSourceFileJavaScript(sourceFile)) {
                 // In javascript files, for union types, we don't just get the members that
                 // the individual types have in common, we also include all the members that
@@ -1380,10 +1409,10 @@ namespace ts.Completions {
                 }
 
                 // Previous token may have been a keyword that was converted to an identifier.
-                switch (previousToken.getText()) {
-                    case "public":
-                    case "protected":
-                    case "private":
+                switch (keywordForNode(previousToken)) {
+                    case SyntaxKind.PublicKeyword:
+                    case SyntaxKind.ProtectedKeyword:
+                    case SyntaxKind.PrivateKeyword:
                         return true;
                 }
             }
@@ -1432,11 +1461,9 @@ namespace ts.Completions {
             let existingMembers: ReadonlyArray<Declaration>;
 
             if (objectLikeContainer.kind === SyntaxKind.ObjectLiteralExpression) {
-                // We are completing on contextual types, but may also include properties
-                // other than those within the declared type.
-                isNewIdentifierLocation = true;
                 const typeForObject = typeChecker.getContextualType(objectLikeContainer);
                 if (!typeForObject) return GlobalsSearch.Fail;
+                isNewIdentifierLocation = hasIndexSignature(typeForObject);
                 typeMembers = getPropertiesForCompletion(typeForObject, typeChecker, /*isForAccess*/ false);
                 existingMembers = objectLikeContainer.properties;
             }
@@ -1535,43 +1562,34 @@ namespace ts.Completions {
             completionKind = CompletionKind.MemberLike;
             // Declaring new property/method/accessor
             isNewIdentifierLocation = true;
-            // Has keywords for class elements
             keywordFilters = isClassLike(decl) ? KeywordCompletionFilters.ClassElementKeywords : KeywordCompletionFilters.InterfaceElementKeywords;
 
             // If you're in an interface you don't want to repeat things from super-interface. So just stop here.
             if (!isClassLike(decl)) return GlobalsSearch.Success;
 
-            const baseTypeNode = getClassExtendsHeritageClauseElement(decl);
-            const implementsTypeNodes = getClassImplementsHeritageClauseElements(decl);
-            if (!baseTypeNode && !implementsTypeNodes) return GlobalsSearch.Success;
-
             const classElement = contextToken.parent;
-            const classElementModifierFlags = (isClassElement(classElement) ? getModifierFlags(classElement) : ModifierFlags.None)
-                // If this is context token is not something we are editing now, consider if this would lead to be modifier
-                | (isIdentifier(contextToken) && !isCurrentlyEditingNode(contextToken) ? modifierToFlag(contextToken.originalKeywordKind) : ModifierFlags.None);
-
-            // No member list for private methods
-            if (classElementModifierFlags & ModifierFlags.Private) return GlobalsSearch.Success;
-
-            let baseClassTypeToGetPropertiesFrom: Type | undefined;
-            if (baseTypeNode) {
-                baseClassTypeToGetPropertiesFrom = typeChecker.getTypeAtLocation(baseTypeNode);
-                if (classElementModifierFlags & ModifierFlags.Static) {
-                    // Use static class to get property symbols from
-                    baseClassTypeToGetPropertiesFrom = typeChecker.getTypeOfSymbolAtLocation(baseClassTypeToGetPropertiesFrom.symbol, decl);
+            let classElementModifierFlags = isClassElement(classElement) && getModifierFlags(classElement);
+            // If this is context token is not something we are editing now, consider if this would lead to be modifier
+            if (contextToken.kind === SyntaxKind.Identifier && !isCurrentlyEditingNode(contextToken)) {
+                switch (contextToken.getText()) {
+                    case "private":
+                        classElementModifierFlags = classElementModifierFlags | ModifierFlags.Private;
+                        break;
+                    case "static":
+                        classElementModifierFlags = classElementModifierFlags | ModifierFlags.Static;
+                        break;
                 }
             }
 
-            const implementedInterfaceTypePropertySymbols = !implementsTypeNodes || (classElementModifierFlags & ModifierFlags.Static)
-                ? emptyArray
-                : flatMap(implementsTypeNodes, typeNode => typeChecker.getPropertiesOfType(typeChecker.getTypeAtLocation(typeNode)));
-
-            // List of property symbols of base type that are not private and already implemented
-            symbols = filterClassMembersList(
-                baseClassTypeToGetPropertiesFrom ? typeChecker.getPropertiesOfType(baseClassTypeToGetPropertiesFrom) : emptyArray,
-                implementedInterfaceTypePropertySymbols,
-                decl.members,
-                classElementModifierFlags);
+            // No member list for private methods
+            if (!(classElementModifierFlags & ModifierFlags.Private)) {
+                // List of property symbols of base type that are not private and already implemented
+                const baseSymbols = flatMap(getAllSuperTypeNodes(decl), baseTypeNode => {
+                    const type = typeChecker.getTypeAtLocation(baseTypeNode);
+                    return typeChecker.getPropertiesOfType(classElementModifierFlags & ModifierFlags.Static ? typeChecker.getTypeOfSymbolAtLocation(type.symbol, decl) : type);
+                });
+                symbols = filterClassMembersList(baseSymbols, decl.members, classElementModifierFlags);
+            }
 
             return GlobalsSearch.Success;
         }
@@ -1616,14 +1634,9 @@ namespace ts.Completions {
             return undefined;
         }
 
-        function isParameterOfConstructorDeclaration(node: Node) {
-            return isParameter(node) && isConstructorDeclaration(node.parent);
-        }
-
-        function isConstructorParameterCompletion(node: Node) {
-            return node.parent &&
-                isParameterOfConstructorDeclaration(node.parent) &&
-                (isConstructorParameterCompletionKeyword(node.kind) || isDeclarationName(node));
+        function isConstructorParameterCompletion(node: Node): boolean {
+            return !!node.parent && isParameter(node.parent) && isConstructorDeclaration(node.parent.parent)
+                && (isParameterPropertyModifier(node.kind) || isDeclarationName(node));
         }
 
         /**
@@ -1808,8 +1821,7 @@ namespace ts.Completions {
 
             // If the previous token is keyword correspoding to class member completion keyword
             // there will be completion available here
-            if (isClassMemberCompletionKeywordText(contextToken.getText()) &&
-                isFromObjectTypeDeclaration(contextToken)) {
+            if (isClassMemberCompletionKeyword(keywordForNode(contextToken)) && isFromObjectTypeDeclaration(contextToken)) {
                 return false;
             }
 
@@ -1819,29 +1831,29 @@ namespace ts.Completions {
                 // - its name of the parameter and not being edited
                 // eg. constructor(a |<- this shouldnt show completion
                 if (!isIdentifier(contextToken) ||
-                    isConstructorParameterCompletionKeywordText(contextToken.getText()) ||
+                    isParameterPropertyModifier(keywordForNode(contextToken)) ||
                     isCurrentlyEditingNode(contextToken)) {
                     return false;
                 }
             }
 
             // Previous token may have been a keyword that was converted to an identifier.
-            switch (contextToken.getText()) {
-                case "abstract":
-                case "async":
-                case "class":
-                case "const":
-                case "declare":
-                case "enum":
-                case "function":
-                case "interface":
-                case "let":
-                case "private":
-                case "protected":
-                case "public":
-                case "static":
-                case "var":
-                case "yield":
+            switch (keywordForNode(contextToken)) {
+                case SyntaxKind.AbstractKeyword:
+                case SyntaxKind.AsyncKeyword:
+                case SyntaxKind.ClassKeyword:
+                case SyntaxKind.ConstKeyword:
+                case SyntaxKind.DeclareKeyword:
+                case SyntaxKind.EnumKeyword:
+                case SyntaxKind.FunctionKeyword:
+                case SyntaxKind.InterfaceKeyword:
+                case SyntaxKind.LetKeyword:
+                case SyntaxKind.PrivateKeyword:
+                case SyntaxKind.ProtectedKeyword:
+                case SyntaxKind.PublicKeyword:
+                case SyntaxKind.StaticKeyword:
+                case SyntaxKind.VarKeyword:
+                case SyntaxKind.YieldKeyword:
                     return true;
             }
 
@@ -1945,12 +1957,8 @@ namespace ts.Completions {
          *
          * @returns Symbols to be suggested in an class element depending on existing memebers and symbol flags
          */
-        function filterClassMembersList(
-            baseSymbols: ReadonlyArray<Symbol>,
-            implementingTypeSymbols: ReadonlyArray<Symbol>,
-            existingMembers: ReadonlyArray<ClassElement>,
-            currentClassElementModifierFlags: ModifierFlags): Symbol[] {
-            const existingMemberNames = createUnderscoreEscapedMap<boolean>();
+        function filterClassMembersList(baseSymbols: ReadonlyArray<Symbol>, existingMembers: ReadonlyArray<ClassElement>, currentClassElementModifierFlags: ModifierFlags): Symbol[] {
+            const existingMemberNames = createUnderscoreEscapedMap<true>();
             for (const m of existingMembers) {
                 // Ignore omitted expressions for missing members
                 if (m.kind !== SyntaxKind.PropertyDeclaration &&
@@ -1971,10 +1979,7 @@ namespace ts.Completions {
                 }
 
                 // do not filter it out if the static presence doesnt match
-                const mIsStatic = hasModifier(m, ModifierFlags.Static);
-                const currentElementIsStatic = !!(currentClassElementModifierFlags & ModifierFlags.Static);
-                if ((mIsStatic && !currentElementIsStatic) ||
-                    (!mIsStatic && currentElementIsStatic)) {
+                if (hasModifier(m, ModifierFlags.Static) !== !!(currentClassElementModifierFlags & ModifierFlags.Static)) {
                     continue;
                 }
 
@@ -1984,24 +1989,10 @@ namespace ts.Completions {
                 }
             }
 
-            const result: Symbol[] = [];
-            addPropertySymbols(baseSymbols, ModifierFlags.Private);
-            addPropertySymbols(implementingTypeSymbols, ModifierFlags.NonPublicAccessibilityModifier);
-            return result;
-
-            function addPropertySymbols(properties: ReadonlyArray<Symbol>, inValidModifierFlags: ModifierFlags) {
-                for (const property of properties) {
-                    if (isValidProperty(property, inValidModifierFlags)) {
-                        result.push(property);
-                    }
-                }
-            }
-
-            function isValidProperty(propertySymbol: Symbol, inValidModifierFlags: ModifierFlags) {
-                return !existingMemberNames.get(propertySymbol.escapedName) &&
-                    propertySymbol.getDeclarations() &&
-                    !(getDeclarationModifierFlagsFromSymbol(propertySymbol) & inValidModifierFlags);
-            }
+            return baseSymbols.filter(propertySymbol =>
+                !existingMemberNames.has(propertySymbol.escapedName) &&
+                    !!propertySymbol.declarations &&
+                    !(getDeclarationModifierFlagsFromSymbol(propertySymbol) & ModifierFlags.Private));
         }
 
         /**
@@ -2027,7 +2018,7 @@ namespace ts.Completions {
         }
 
         function isCurrentlyEditingNode(node: Node): boolean {
-            return node.getStart() <= position && position <= node.getEnd();
+            return node.getStart(sourceFile) <= position && position <= node.getEnd();
         }
     }
 
@@ -2097,9 +2088,9 @@ namespace ts.Completions {
                 case KeywordCompletionFilters.InterfaceElementKeywords:
                     return isInterfaceOrTypeLiteralCompletionKeyword(kind);
                 case KeywordCompletionFilters.ConstructorParameterKeywords:
-                    return isConstructorParameterCompletionKeyword(kind);
+                    return isParameterPropertyModifier(kind);
                 case KeywordCompletionFilters.FunctionLikeBodyKeywords:
-                    return isFunctionLikeBodyCompletionKeyword(kind);
+                    return !isClassMemberCompletionKeyword(kind);
                 case KeywordCompletionFilters.TypeKeywords:
                     return isTypeKeyword(kind);
                 default:
@@ -2114,53 +2105,19 @@ namespace ts.Completions {
 
     function isClassMemberCompletionKeyword(kind: SyntaxKind) {
         switch (kind) {
-            case SyntaxKind.PublicKeyword:
-            case SyntaxKind.ProtectedKeyword:
-            case SyntaxKind.PrivateKeyword:
             case SyntaxKind.AbstractKeyword:
-            case SyntaxKind.StaticKeyword:
             case SyntaxKind.ConstructorKeyword:
-            case SyntaxKind.ReadonlyKeyword:
             case SyntaxKind.GetKeyword:
             case SyntaxKind.SetKeyword:
             case SyntaxKind.AsyncKeyword:
                 return true;
+            default:
+                return isClassMemberModifier(kind);
         }
     }
 
-    function isClassMemberCompletionKeywordText(text: string) {
-        return isClassMemberCompletionKeyword(stringToToken(text));
-    }
-
-    function isConstructorParameterCompletionKeyword(kind: SyntaxKind) {
-        switch (kind) {
-            case SyntaxKind.PublicKeyword:
-            case SyntaxKind.PrivateKeyword:
-            case SyntaxKind.ProtectedKeyword:
-            case SyntaxKind.ReadonlyKeyword:
-                return true;
-        }
-    }
-
-    function isConstructorParameterCompletionKeywordText(text: string) {
-        return isConstructorParameterCompletionKeyword(stringToToken(text));
-    }
-
-    function isFunctionLikeBodyCompletionKeyword(kind: SyntaxKind) {
-        switch (kind) {
-            case SyntaxKind.PublicKeyword:
-            case SyntaxKind.PrivateKeyword:
-            case SyntaxKind.ProtectedKeyword:
-            case SyntaxKind.ReadonlyKeyword:
-            case SyntaxKind.ConstructorKeyword:
-            case SyntaxKind.StaticKeyword:
-            case SyntaxKind.AbstractKeyword:
-            case SyntaxKind.GetKeyword:
-            case SyntaxKind.SetKeyword:
-            case SyntaxKind.UndefinedKeyword:
-                return false;
-        }
-        return true;
+    function keywordForNode(node: Node): SyntaxKind {
+        return isIdentifier(node) ? node.originalKeywordKind || SyntaxKind.Unknown : node.kind;
     }
 
     function isEqualityOperatorKind(kind: SyntaxKind): kind is EqualityOperator {
@@ -2260,4 +2217,8 @@ namespace ts.Completions {
     function isFromObjectTypeDeclaration(node: Node): boolean {
         return node.parent && (isClassElement(node.parent) || isTypeElement(node.parent)) && isObjectTypeDeclaration(node.parent.parent);
     }
+
+    function hasIndexSignature(type: Type): boolean {
+        return !!type.getStringIndexType() || !!type.getNumberIndexType();
+    }
 }

src/services/findAllReferences.ts

@@ -132,15 +132,8 @@ namespace ts.FindAllReferences {
 
         const { node, name, kind, displayParts } = info;
         const sourceFile = node.getSourceFile();
-        return {
-            containerKind: ScriptElementKind.unknown,
-            containerName: "",
-            fileName: sourceFile.fileName,
-            kind,
-            name,
-            textSpan: createTextSpanFromNode(node, sourceFile),
-            displayParts
-        };
+        const textSpan = getTextSpan(isComputedPropertyName(node) ? node.expression : node, sourceFile);
+        return { containerKind: ScriptElementKind.unknown, containerName: "", fileName: sourceFile.fileName, kind, name, textSpan, displayParts };
     }
 
     function getDefinitionKindAndDisplayParts(symbol: Symbol, checker: TypeChecker, node: Node): { displayParts: SymbolDisplayPart[], kind: ScriptElementKind } {
@@ -218,8 +211,8 @@ namespace ts.FindAllReferences {
         return { fileName, span };
     }
 
-    function getTextSpan(node: Node): TextSpan {
-        let start = node.getStart();
+    function getTextSpan(node: Node, sourceFile?: SourceFile): TextSpan {
+        let start = node.getStart(sourceFile);
         let end = node.getEnd();
         if (node.kind === SyntaxKind.StringLiteral) {
             start += 1;
@@ -366,7 +359,7 @@ namespace ts.FindAllReferences.Core {
             // otherwise we'll need to search globally (i.e. include each file).
             const scope = getSymbolScope(symbol);
             if (scope) {
-                getReferencesInContainer(scope, scope.getSourceFile(), search, state);
+                getReferencesInContainer(scope, scope.getSourceFile(), search, state, /*addReferencesHere*/ !(isSourceFile(scope) && !contains(sourceFiles, scope)));
             }
             else {
                 // Global search
@@ -595,9 +588,8 @@ namespace ts.FindAllReferences.Core {
     function searchForImportedSymbol(symbol: Symbol, state: State): void {
         for (const declaration of symbol.declarations) {
             const exportingFile = declaration.getSourceFile();
-            if (state.includesSourceFile(exportingFile)) {
-                getReferencesInSourceFile(exportingFile, state.createSearch(declaration, symbol, ImportExport.Import), state);
-            }
+            // Need to search in the file even if it's not in the search-file set, because it might export the symbol.
+            getReferencesInSourceFile(exportingFile, state.createSearch(declaration, symbol, ImportExport.Import), state, state.includesSourceFile(exportingFile));
         }
     }
 
@@ -800,9 +792,9 @@ namespace ts.FindAllReferences.Core {
         return references.length ? [{ definition: { type: "keyword", node: references[0].node }, references }] : undefined;
     }
 
-    function getReferencesInSourceFile(sourceFile: SourceFile, search: Search, state: State): void {
+    function getReferencesInSourceFile(sourceFile: SourceFile, search: Search, state: State, addReferencesHere = true): void {
         state.cancellationToken.throwIfCancellationRequested();
-        return getReferencesInContainer(sourceFile, sourceFile, search, state);
+        return getReferencesInContainer(sourceFile, sourceFile, search, state, addReferencesHere);
     }
 
     /**
@@ -810,17 +802,17 @@ namespace ts.FindAllReferences.Core {
      * tuple of(searchSymbol, searchText, searchLocation, and searchMeaning).
      * searchLocation: a node where the search value
      */
-    function getReferencesInContainer(container: Node, sourceFile: SourceFile, search: Search, state: State): void {
+    function getReferencesInContainer(container: Node, sourceFile: SourceFile, search: Search, state: State, addReferencesHere: boolean): void {
         if (!state.markSearchedSymbol(sourceFile, search.symbol)) {
             return;
         }
 
         for (const position of getPossibleSymbolReferencePositions(sourceFile, search.text, container)) {
-            getReferencesAtLocation(sourceFile, position, search, state);
+            getReferencesAtLocation(sourceFile, position, search, state, addReferencesHere);
         }
     }
 
-    function getReferencesAtLocation(sourceFile: SourceFile, position: number, search: Search, state: State): void {
+    function getReferencesAtLocation(sourceFile: SourceFile, position: number, search: Search, state: State, addReferencesHere: boolean): void {
         const referenceLocation = getTouchingPropertyName(sourceFile, position, /*includeJsDocComment*/ true);
 
         if (!isValidReferencePosition(referenceLocation, search.text)) {
@@ -855,7 +847,7 @@ namespace ts.FindAllReferences.Core {
 
         if (isExportSpecifier(parent)) {
             Debug.assert(referenceLocation.kind === SyntaxKind.Identifier);
-            getReferencesAtExportSpecifier(referenceLocation as Identifier, referenceSymbol, parent, search, state);
+            getReferencesAtExportSpecifier(referenceLocation as Identifier, referenceSymbol, parent, search, state, addReferencesHere);
             return;
         }
 
@@ -867,7 +859,7 @@ namespace ts.FindAllReferences.Core {
 
         switch (state.specialSearchKind) {
             case SpecialSearchKind.None:
-                addReference(referenceLocation, relatedSymbol, state);
+                if (addReferencesHere) addReference(referenceLocation, relatedSymbol, state);
                 break;
             case SpecialSearchKind.Constructor:
                 addConstructorReferences(referenceLocation, sourceFile, search, state);
@@ -882,7 +874,7 @@ namespace ts.FindAllReferences.Core {
         getImportOrExportReferences(referenceLocation, referenceSymbol, search, state);
     }
 
-    function getReferencesAtExportSpecifier(referenceLocation: Identifier, referenceSymbol: Symbol, exportSpecifier: ExportSpecifier, search: Search, state: State): void {
+    function getReferencesAtExportSpecifier(referenceLocation: Identifier, referenceSymbol: Symbol, exportSpecifier: ExportSpecifier, search: Search, state: State, addReferencesHere: boolean): void {
         const { parent, propertyName, name } = exportSpecifier;
         const exportDeclaration = parent.parent;
         const localSymbol = getLocalSymbolForExportSpecifier(referenceLocation, referenceSymbol, exportSpecifier, state.checker);
@@ -900,7 +892,7 @@ namespace ts.FindAllReferences.Core {
                 addRef();
             }
 
-            if (!state.options.isForRename && state.markSeenReExportRHS(name)) {
+            if (addReferencesHere && !state.options.isForRename && state.markSeenReExportRHS(name)) {
                 addReference(name, referenceSymbol, state);
             }
         }
@@ -925,7 +917,7 @@ namespace ts.FindAllReferences.Core {
         }
 
         function addRef() {
-            addReference(referenceLocation, localSymbol, state);
+            if (addReferencesHere) addReference(referenceLocation, localSymbol, state);
         }
     }
 
@@ -1208,63 +1200,31 @@ namespace ts.FindAllReferences.Core {
      * distinction between structurally compatible implementations and explicit implementations, so we
      * must use the AST.
      *
-     * @param child         A class or interface Symbol
+     * @param symbol         A class or interface Symbol
      * @param parent        Another class or interface Symbol
      * @param cachedResults A map of symbol id pairs (i.e. "child,parent") to booleans indicating previous results
      */
-    function explicitlyInheritsFrom(child: Symbol, parent: Symbol, cachedResults: Map<boolean>, checker: TypeChecker): boolean {
-        const parentIsInterface = parent.getFlags() & SymbolFlags.Interface;
-        return searchHierarchy(child);
-
-        function searchHierarchy(symbol: Symbol): boolean {
-            if (symbol === parent) {
-                return true;
-            }
-
-            const key = getSymbolId(symbol) + "," + getSymbolId(parent);
-            const cached = cachedResults.get(key);
-            if (cached !== undefined) {
-                return cached;
-            }
-
-            // Set the key so that we don't infinitely recurse
-            cachedResults.set(key, false);
-
-            const inherits = forEach(symbol.getDeclarations(), declaration => {
-                if (isClassLike(declaration)) {
-                    if (parentIsInterface) {
-                        const interfaceReferences = getClassImplementsHeritageClauseElements(declaration);
-                        if (interfaceReferences) {
-                            for (const typeReference of interfaceReferences) {
-                                if (searchTypeReference(typeReference)) {
-                                    return true;
-                                }
-                            }
-                        }
-                    }
-                    return searchTypeReference(getClassExtendsHeritageClauseElement(declaration));
-                }
-                else if (declaration.kind === SyntaxKind.InterfaceDeclaration) {
-                    if (parentIsInterface) {
-                        return forEach(getInterfaceBaseTypeNodes(<InterfaceDeclaration>declaration), searchTypeReference);
-                    }
-                }
-                return false;
-            });
-
-            cachedResults.set(key, inherits);
-            return inherits;
+    function explicitlyInheritsFrom(symbol: Symbol, parent: Symbol, cachedResults: Map<boolean>, checker: TypeChecker): boolean {
+        if (symbol === parent) {
+            return true;
         }
 
-        function searchTypeReference(typeReference: ExpressionWithTypeArguments): boolean {
-            if (typeReference) {
+        const key = getSymbolId(symbol) + "," + getSymbolId(parent);
+        const cached = cachedResults.get(key);
+        if (cached !== undefined) {
+            return cached;
+        }
+
+        // Set the key so that we don't infinitely recurse
+        cachedResults.set(key, false);
+
+        const inherits = symbol.declarations.some(declaration =>
+            getAllSuperTypeNodes(declaration).some(typeReference => {
                 const type = checker.getTypeAtLocation(typeReference);
-                if (type && type.symbol) {
-                    return searchHierarchy(type.symbol);
-                }
-            }
-            return false;
-        }
+                return !!type && !!type.symbol && explicitlyInheritsFrom(type.symbol, parent, cachedResults, checker);
+            }));
+        cachedResults.set(key, inherits);
+        return inherits;
     }
 
     function getReferencesForSuperKeyword(superKeyword: Node): SymbolAndEntries[] {
@@ -1499,10 +1459,6 @@ namespace ts.FindAllReferences.Core {
      *                                The value of previousIterationSymbol is undefined when the function is first called.
      */
     function getPropertySymbolsFromBaseTypes(symbol: Symbol, propertyName: string, result: Push<Symbol>, previousIterationSymbolsCache: SymbolTable, checker: TypeChecker): void {
-        if (!symbol) {
-            return;
-        }
-
         // If the current symbol is the same as the previous-iteration symbol, we can just return the symbol that has already been visited
         // This is particularly important for the following cases, so that we do not infinitely visit the same symbol.
         // For example:
@@ -1514,27 +1470,16 @@ namespace ts.FindAllReferences.Core {
         // the function will add any found symbol of the property-name, then its sub-routine will call
         // getPropertySymbolsFromBaseTypes again to walk up any base types to prevent revisiting already
         // visited symbol, interface "C", the sub-routine will pass the current symbol as previousIterationSymbol.
-        if (previousIterationSymbolsCache.has(symbol.escapedName)) {
+        if (!symbol || previousIterationSymbolsCache.has(symbol.escapedName)) {
             return;
         }
 
         if (symbol.flags & (SymbolFlags.Class | SymbolFlags.Interface)) {
-            forEach(symbol.getDeclarations(), declaration => {
-                if (isClassLike(declaration)) {
-                    getPropertySymbolFromTypeReference(getClassExtendsHeritageClauseElement(<ClassDeclaration>declaration));
-                    forEach(getClassImplementsHeritageClauseElements(<ClassDeclaration>declaration), getPropertySymbolFromTypeReference);
-                }
-                else if (declaration.kind === SyntaxKind.InterfaceDeclaration) {
-                    forEach(getInterfaceBaseTypeNodes(<InterfaceDeclaration>declaration), getPropertySymbolFromTypeReference);
-                }
-            });
-        }
-        return;
+            for (const declaration of symbol.declarations) {
+                for (const typeReference of getAllSuperTypeNodes(declaration)) {
+                    const type = checker.getTypeAtLocation(typeReference);
+                    if (!type) continue;
 
-        function getPropertySymbolFromTypeReference(typeReference: ExpressionWithTypeArguments): void {
-            if (typeReference) {
-                const type = checker.getTypeAtLocation(typeReference);
-                if (type) {
                     const propertySymbol = checker.getPropertyOfType(type, propertyName);
                     if (propertySymbol) {
                         result.push(...checker.getRootSymbols(propertySymbol));

src/services/importTracker.ts

@@ -394,18 +394,16 @@ namespace ts.FindAllReferences {
                     case SyntaxKind.ExportDeclaration:
                     case SyntaxKind.ImportDeclaration: {
                         const decl = statement as ImportDeclaration | ExportDeclaration;
-                        if (decl.moduleSpecifier && decl.moduleSpecifier.kind === SyntaxKind.StringLiteral) {
-                            action(decl, decl.moduleSpecifier as StringLiteral);
+                        if (decl.moduleSpecifier && isStringLiteral(decl.moduleSpecifier)) {
+                            action(decl, decl.moduleSpecifier);
                         }
                         break;
                     }
 
                     case SyntaxKind.ImportEqualsDeclaration: {
                         const decl = statement as ImportEqualsDeclaration;
-                        const { moduleReference } = decl;
-                        if (moduleReference.kind === SyntaxKind.ExternalModuleReference &&
-                            moduleReference.expression.kind === SyntaxKind.StringLiteral) {
-                            action(decl, moduleReference.expression as StringLiteral);
+                        if (isExternalModuleImportEquals(decl)) {
+                            action(decl, decl.moduleReference.expression);
                         }
                         break;
                     }
@@ -647,7 +645,7 @@ namespace ts.FindAllReferences {
         return node.kind === SyntaxKind.ModuleDeclaration && (node as ModuleDeclaration).name.kind === SyntaxKind.StringLiteral;
     }
 
-    function isExternalModuleImportEquals({ moduleReference }: ImportEqualsDeclaration): boolean {
-        return moduleReference.kind === SyntaxKind.ExternalModuleReference && moduleReference.expression.kind === SyntaxKind.StringLiteral;
+    function isExternalModuleImportEquals(eq: ImportEqualsDeclaration): eq is ImportEqualsDeclaration & { moduleReference: { expression: StringLiteral } } {
+        return eq.moduleReference.kind === SyntaxKind.ExternalModuleReference && eq.moduleReference.expression.kind === SyntaxKind.StringLiteral;
     }
 }

src/services/pathCompletions.ts

@@ -5,33 +5,40 @@ namespace ts.Completions.PathCompletions {
         readonly kind: ScriptElementKind.scriptElement | ScriptElementKind.directory | ScriptElementKind.externalModuleName;
     }
     export interface PathCompletion extends NameAndKind {
-        readonly span: TextSpan;
-    }
-    function createPathCompletion(name: string, kind: PathCompletion["kind"], span: TextSpan): PathCompletion {
-        return { name, kind, span };
+        readonly span: TextSpan | undefined;
     }
 
-    export function getStringLiteralCompletionsFromModuleNames(sourceFile: SourceFile, node: LiteralExpression, compilerOptions: CompilerOptions, host: LanguageServiceHost, typeChecker: TypeChecker): PathCompletion[] {
+    function nameAndKind(name: string, kind: NameAndKind["kind"]): NameAndKind {
+        return { name, kind };
+    }
+    function addReplacementSpans(text: string, textStart: number, names: ReadonlyArray<NameAndKind>): ReadonlyArray<PathCompletion> {
+        const span = getDirectoryFragmentTextSpan(text, textStart);
+        return names.map(({ name, kind }): PathCompletion => ({ name, kind, span }));
+    }
+
+    export function getStringLiteralCompletionsFromModuleNames(sourceFile: SourceFile, node: LiteralExpression, compilerOptions: CompilerOptions, host: LanguageServiceHost, typeChecker: TypeChecker): ReadonlyArray<PathCompletion> {
+        return addReplacementSpans(node.text, node.getStart(sourceFile) + 1, getStringLiteralCompletionsFromModuleNamesWorker(node, compilerOptions, host, typeChecker));
+    }
+
+    function getStringLiteralCompletionsFromModuleNamesWorker(node: LiteralExpression, compilerOptions: CompilerOptions, host: LanguageServiceHost, typeChecker: TypeChecker): ReadonlyArray<NameAndKind> {
         const literalValue = normalizeSlashes(node.text);
 
         const scriptPath = node.getSourceFile().path;
         const scriptDirectory = getDirectoryPath(scriptPath);
 
-        const span = getDirectoryFragmentTextSpan(node.text, node.getStart(sourceFile) + 1);
         if (isPathRelativeToScript(literalValue) || isRootedDiskPath(literalValue)) {
             const extensions = getSupportedExtensions(compilerOptions);
             if (compilerOptions.rootDirs) {
                 return getCompletionEntriesForDirectoryFragmentWithRootDirs(
-                    compilerOptions.rootDirs, literalValue, scriptDirectory, extensions, /*includeExtensions*/ false, span, compilerOptions, host, scriptPath);
+                    compilerOptions.rootDirs, literalValue, scriptDirectory, extensions, /*includeExtensions*/ false, compilerOptions, host, scriptPath);
             }
             else {
-                return getCompletionEntriesForDirectoryFragment(
-                    literalValue, scriptDirectory, extensions, /*includeExtensions*/ false, span, host, scriptPath);
+                return getCompletionEntriesForDirectoryFragment(literalValue, scriptDirectory, extensions, /*includeExtensions*/ false, host, scriptPath);
             }
         }
         else {
             // Check for node modules
-            return getCompletionEntriesForNonRelativeModules(literalValue, scriptDirectory, span, compilerOptions, host, typeChecker);
+            return getCompletionEntriesForNonRelativeModules(literalValue, scriptDirectory, compilerOptions, host, typeChecker);
         }
     }
 
@@ -54,15 +61,15 @@ namespace ts.Completions.PathCompletions {
             compareStringsCaseSensitive);
     }
 
-    function getCompletionEntriesForDirectoryFragmentWithRootDirs(rootDirs: string[], fragment: string, scriptPath: string, extensions: ReadonlyArray<string>, includeExtensions: boolean, span: TextSpan, compilerOptions: CompilerOptions, host: LanguageServiceHost, exclude?: string): PathCompletion[] {
+    function getCompletionEntriesForDirectoryFragmentWithRootDirs(rootDirs: string[], fragment: string, scriptPath: string, extensions: ReadonlyArray<string>, includeExtensions: boolean, compilerOptions: CompilerOptions, host: LanguageServiceHost, exclude?: string): NameAndKind[] {
         const basePath = compilerOptions.project || host.getCurrentDirectory();
         const ignoreCase = !(host.useCaseSensitiveFileNames && host.useCaseSensitiveFileNames());
         const baseDirectories = getBaseDirectoriesFromRootDirs(rootDirs, basePath, scriptPath, ignoreCase);
 
-        const result: PathCompletion[] = [];
+        const result: NameAndKind[] = [];
 
         for (const baseDirectory of baseDirectories) {
-            getCompletionEntriesForDirectoryFragment(fragment, baseDirectory, extensions, includeExtensions, span, host, exclude, result);
+            getCompletionEntriesForDirectoryFragment(fragment, baseDirectory, extensions, includeExtensions, host, exclude, result);
         }
 
         return result;
@@ -71,7 +78,7 @@ namespace ts.Completions.PathCompletions {
     /**
      * Given a path ending at a directory, gets the completions for the path, and filters for those entries containing the basename.
      */
-    function getCompletionEntriesForDirectoryFragment(fragment: string, scriptPath: string, extensions: ReadonlyArray<string>, includeExtensions: boolean, span: TextSpan, host: LanguageServiceHost, exclude?: string, result: PathCompletion[] = []): PathCompletion[] {
+    function getCompletionEntriesForDirectoryFragment(fragment: string, scriptPath: string, extensions: ReadonlyArray<string>, includeExtensions: boolean, host: LanguageServiceHost, exclude?: string, result: NameAndKind[] = []): NameAndKind[] {
         if (fragment === undefined) {
             fragment = "";
         }
@@ -120,7 +127,7 @@ namespace ts.Completions.PathCompletions {
                 }
 
                 forEachKey(foundFiles, foundFile => {
-                    result.push(createPathCompletion(foundFile, ScriptElementKind.scriptElement, span));
+                    result.push(nameAndKind(foundFile, ScriptElementKind.scriptElement));
                 });
             }
 
@@ -131,7 +138,7 @@ namespace ts.Completions.PathCompletions {
                 for (const directory of directories) {
                     const directoryName = getBaseFileName(normalizePath(directory));
 
-                    result.push(createPathCompletion(directoryName, ScriptElementKind.directory, span));
+                    result.push(nameAndKind(directoryName, ScriptElementKind.directory));
                 }
             }
         }
@@ -146,16 +153,16 @@ namespace ts.Completions.PathCompletions {
      *      Modules from node_modules (i.e. those listed in package.json)
      *          This includes all files that are found in node_modules/moduleName/ with acceptable file extensions
      */
-    function getCompletionEntriesForNonRelativeModules(fragment: string, scriptPath: string, span: TextSpan, compilerOptions: CompilerOptions, host: LanguageServiceHost, typeChecker: TypeChecker): PathCompletion[] {
+    function getCompletionEntriesForNonRelativeModules(fragment: string, scriptPath: string, compilerOptions: CompilerOptions, host: LanguageServiceHost, typeChecker: TypeChecker): NameAndKind[] {
         const { baseUrl, paths } = compilerOptions;
 
-        const result: PathCompletion[] = [];
+        const result: NameAndKind[] = [];
 
         const fileExtensions = getSupportedExtensions(compilerOptions);
         if (baseUrl) {
             const projectDir = compilerOptions.project || host.getCurrentDirectory();
             const absolute = isRootedDiskPath(baseUrl) ? baseUrl : combinePaths(projectDir, baseUrl);
-            getCompletionEntriesForDirectoryFragment(fragment, normalizePath(absolute), fileExtensions, /*includeExtensions*/ false, span, host, /*exclude*/ undefined, result);
+            getCompletionEntriesForDirectoryFragment(fragment, normalizePath(absolute), fileExtensions, /*includeExtensions*/ false, host, /*exclude*/ undefined, result);
 
             for (const path in paths) {
                 const patterns = paths[path];
@@ -163,7 +170,7 @@ namespace ts.Completions.PathCompletions {
                     for (const { name, kind } of getCompletionsForPathMapping(path, patterns, fragment, baseUrl, fileExtensions, host)) {
                         // Path mappings may provide a duplicate way to get to something we've already added, so don't add again.
                         if (!result.some(entry => entry.name === name)) {
-                            result.push(createPathCompletion(name, kind, span));
+                            result.push(nameAndKind(name, kind));
                         }
                     }
                 }
@@ -174,15 +181,15 @@ namespace ts.Completions.PathCompletions {
             forEachAncestorDirectory(scriptPath, ancestor => {
                 const nodeModules = combinePaths(ancestor, "node_modules");
                 if (host.directoryExists(nodeModules)) {
-                    getCompletionEntriesForDirectoryFragment(fragment, nodeModules, fileExtensions, /*includeExtensions*/ false, span, host, /*exclude*/ undefined, result);
+                    getCompletionEntriesForDirectoryFragment(fragment, nodeModules, fileExtensions, /*includeExtensions*/ false, host, /*exclude*/ undefined, result);
                 }
             });
         }
 
-        getCompletionEntriesFromTypings(host, compilerOptions, scriptPath, span, result);
+        getCompletionEntriesFromTypings(host, compilerOptions, scriptPath, result);
 
         for (const moduleName of enumeratePotentialNonRelativeModules(fragment, scriptPath, compilerOptions, typeChecker, host)) {
-            result.push(createPathCompletion(moduleName, ScriptElementKind.externalModuleName, span));
+            result.push(nameAndKind(moduleName, ScriptElementKind.externalModuleName));
         }
 
         return result;
@@ -296,7 +303,7 @@ namespace ts.Completions.PathCompletions {
         return deduplicate(nonRelativeModuleNames, equateStringsCaseSensitive, compareStringsCaseSensitive);
     }
 
-    export function getTripleSlashReferenceCompletion(sourceFile: SourceFile, position: number, compilerOptions: CompilerOptions, host: LanguageServiceHost): PathCompletion[] | undefined {
+    export function getTripleSlashReferenceCompletion(sourceFile: SourceFile, position: number, compilerOptions: CompilerOptions, host: LanguageServiceHost): ReadonlyArray<PathCompletion> | undefined {
         const token = getTokenAtPosition(sourceFile, position, /*includeJsDocComment*/ false);
         const commentRanges = getLeadingCommentRanges(sourceFile.text, token.pos);
         const range = commentRanges && find(commentRanges, commentRange => position >= commentRange.pos && position <= commentRange.end);
@@ -311,23 +318,13 @@ namespace ts.Completions.PathCompletions {
 
         const [, prefix, kind, toComplete] = match;
         const scriptPath = getDirectoryPath(sourceFile.path);
-        switch (kind) {
-            case "path": {
-                // Give completions for a relative path
-                const span = getDirectoryFragmentTextSpan(toComplete, range.pos + prefix.length);
-                return getCompletionEntriesForDirectoryFragment(toComplete, scriptPath, getSupportedExtensions(compilerOptions), /*includeExtensions*/ true, span, host, sourceFile.path);
-            }
-            case "types": {
-                // Give completions based on the typings available
-                const span = createTextSpan(range.pos + prefix.length, match[0].length - prefix.length);
-                return getCompletionEntriesFromTypings(host, compilerOptions, scriptPath, span);
-            }
-            default:
-                return undefined;
-        }
+        const names = kind === "path" ? getCompletionEntriesForDirectoryFragment(toComplete, scriptPath, getSupportedExtensions(compilerOptions), /*includeExtensions*/ true, host, sourceFile.path)
+            : kind === "types" ? getCompletionEntriesFromTypings(host, compilerOptions, scriptPath)
+            : undefined;
+        return names && addReplacementSpans(toComplete, range.pos + prefix.length, names);
     }
 
-    function getCompletionEntriesFromTypings(host: LanguageServiceHost, options: CompilerOptions, scriptPath: string, span: TextSpan, result: PathCompletion[] = []): PathCompletion[] {
+    function getCompletionEntriesFromTypings(host: LanguageServiceHost, options: CompilerOptions, scriptPath: string, result: NameAndKind[] = []): NameAndKind[] {
         // Check for typings specified in compiler options
         const seen = createMap<true>();
         if (options.types) {
@@ -375,7 +372,7 @@ namespace ts.Completions.PathCompletions {
 
         function pushResult(moduleName: string) {
             if (!seen.has(moduleName)) {
-                result.push(createPathCompletion(moduleName, ScriptElementKind.externalModuleName, span));
+                result.push(nameAndKind(moduleName, ScriptElementKind.externalModuleName));
                 seen.set(moduleName, true);
             }
         }
@@ -445,10 +442,12 @@ namespace ts.Completions.PathCompletions {
     }
 
     // Replace everything after the last directory seperator that appears
-    function getDirectoryFragmentTextSpan(text: string, textStart: number): TextSpan {
-        const index = text.lastIndexOf(directorySeparator);
+    function getDirectoryFragmentTextSpan(text: string, textStart: number): TextSpan | undefined {
+        const index = Math.max(text.lastIndexOf(directorySeparator), text.lastIndexOf("\\"));
         const offset = index !== -1 ? index + 1 : 0;
-        return { start: textStart + offset, length: text.length - offset };
+        // If the range is an identifier, span is unnecessary.
+        const length = text.length - offset;
+        return length === 0 || isIdentifierText(text.substr(offset, length), ScriptTarget.ESNext) ? undefined : createTextSpan(textStart + offset, length);
     }
 
     // Returns true if the path is explicitly relative to the script (i.e. relative to . or ..)

src/services/refactors/extractSymbol.ts

@@ -1053,7 +1053,7 @@ namespace ts.refactor.extractSymbol {
             changeTracker.insertNodeBefore(context.file, nodeToInsertBefore, newVariable, /*blankLineBetween*/ true);
 
             // Consume
-            changeTracker.replaceNode(context.file, node, localReference, textChanges.useNonAdjustedPositions);
+            changeTracker.replaceNode(context.file, node, localReference);
         }
         else {
             const newVariableDeclaration = createVariableDeclaration(localNameText, variableType, initializer);
@@ -1070,7 +1070,7 @@ namespace ts.refactor.extractSymbol {
 
                 // Consume
                 const localReference = createIdentifier(localNameText);
-                changeTracker.replaceNode(context.file, node, localReference, textChanges.useNonAdjustedPositions);
+                changeTracker.replaceNode(context.file, node, localReference);
             }
             else if (node.parent.kind === SyntaxKind.ExpressionStatement && scope === findAncestor(node, isScope)) {
                 // If the parent is an expression statement and the target scope is the immediately enclosing one,
@@ -1078,7 +1078,7 @@ namespace ts.refactor.extractSymbol {
                 const newVariableStatement = createVariableStatement(
                     /*modifiers*/ undefined,
                     createVariableDeclarationList([newVariableDeclaration], NodeFlags.Const));
-                changeTracker.replaceNode(context.file, node.parent, newVariableStatement, textChanges.useNonAdjustedPositions);
+                changeTracker.replaceNode(context.file, node.parent, newVariableStatement);
             }
             else {
                 const newVariableStatement = createVariableStatement(
@@ -1101,7 +1101,7 @@ namespace ts.refactor.extractSymbol {
                 }
                 else {
                     const localReference = createIdentifier(localNameText);
-                    changeTracker.replaceNode(context.file, node, localReference, textChanges.useNonAdjustedPositions);
+                    changeTracker.replaceNode(context.file, node, localReference);
                 }
             }
         }

src/services/services.ts

@@ -54,7 +54,7 @@ namespace ts {
         public jsDoc: JSDoc[];
         public original: Node;
         public transformFlags: TransformFlags;
-        private _children: Node[];
+        private _children: Node[] | undefined;
 
         constructor(kind: SyntaxKind, pos: number, end: number) {
             this.pos = pos;
@@ -117,106 +117,17 @@ namespace ts {
             return sourceFile.text.substring(this.getStart(sourceFile), this.getEnd());
         }
 
-        private addSyntheticNodes(nodes: Push<Node>, pos: number, end: number): number {
-            scanner.setTextPos(pos);
-            while (pos < end) {
-                const token = scanner.scan();
-                const textPos = scanner.getTextPos();
-                if (textPos <= end) {
-                    if (token === SyntaxKind.Identifier) {
-                        Debug.fail(`Did not expect ${Debug.showSyntaxKind(this)} to have an Identifier in its trivia`);
-                    }
-                    nodes.push(createNode(token, pos, textPos, this));
-                }
-                pos = textPos;
-                if (token === SyntaxKind.EndOfFileToken) {
-                    break;
-                }
-            }
-            return pos;
-        }
-
-        private createSyntaxList(nodes: NodeArray<Node>): Node {
-            const list = <NodeObject>createNode(SyntaxKind.SyntaxList, nodes.pos, nodes.end, this);
-            list._children = [];
-            let pos = nodes.pos;
-
-            for (const node of nodes) {
-                if (pos < node.pos) {
-                    pos = this.addSyntheticNodes(list._children, pos, node.pos);
-                }
-                list._children.push(node);
-                pos = node.end;
-            }
-            if (pos < nodes.end) {
-                this.addSyntheticNodes(list._children, pos, nodes.end);
-            }
-            return list;
-        }
-
-        private createChildren(sourceFile?: SourceFileLike) {
-            if (!isNodeKind(this.kind)) {
-                this._children = emptyArray;
-                return;
-            }
-
-            if (isJSDocCommentContainingNode(this)) {
-                /** Don't add trivia for "tokens" since this is in a comment. */
-                const children: Node[] = [];
-                this.forEachChild(child => { children.push(child); });
-                this._children = children;
-                return;
-            }
-
-            const children: Node[] = [];
-            scanner.setText((sourceFile || this.getSourceFile()).text);
-            let pos = this.pos;
-            const processNode = (node: Node) => {
-                pos = this.addSyntheticNodes(children, pos, node.pos);
-                children.push(node);
-                pos = node.end;
-            };
-            const processNodes = (nodes: NodeArray<Node>) => {
-                if (pos < nodes.pos) {
-                    pos = this.addSyntheticNodes(children, pos, nodes.pos);
-                }
-                children.push(this.createSyntaxList(nodes));
-                pos = nodes.end;
-            };
-            // jsDocComments need to be the first children
-            if (this.jsDoc) {
-                for (const jsDocComment of this.jsDoc) {
-                    processNode(jsDocComment);
-                }
-            }
-            // For syntactic classifications, all trivia are classcified together, including jsdoc comments.
-            // For that to work, the jsdoc comments should still be the leading trivia of the first child.
-            // Restoring the scanner position ensures that.
-            pos = this.pos;
-            forEachChild(this, processNode, processNodes);
-            if (pos < this.end) {
-                this.addSyntheticNodes(children, pos, this.end);
-            }
-            scanner.setText(undefined);
-            this._children = children;
-        }
-
         public getChildCount(sourceFile?: SourceFile): number {
-            this.assertHasRealPosition();
-            if (!this._children) this.createChildren(sourceFile);
-            return this._children.length;
+            return this.getChildren(sourceFile).length;
         }
 
         public getChildAt(index: number, sourceFile?: SourceFile): Node {
-            this.assertHasRealPosition();
-            if (!this._children) this.createChildren(sourceFile);
-            return this._children[index];
+            return this.getChildren(sourceFile)[index];
         }
 
         public getChildren(sourceFile?: SourceFileLike): Node[] {
             this.assertHasRealPosition("Node without a real position cannot be scanned and thus has no token nodes - use forEachChild and collect the result if that's fine");
-            if (!this._children) this.createChildren(sourceFile);
-            return this._children;
+            return this._children || (this._children = createChildren(this, sourceFile));
         }
 
         public getFirstToken(sourceFile?: SourceFile): Node {
@@ -249,6 +160,74 @@ namespace ts {
         }
     }
 
+    function createChildren(node: Node, sourceFile: SourceFileLike | undefined): Node[] {
+        if (!isNodeKind(node.kind)) {
+            return emptyArray;
+        }
+
+        const children: Node[] = [];
+
+        if (isJSDocCommentContainingNode(node)) {
+            /** Don't add trivia for "tokens" since this is in a comment. */
+            node.forEachChild(child => { children.push(child); });
+            return children;
+        }
+
+        scanner.setText((sourceFile || node.getSourceFile()).text);
+        let pos = node.pos;
+        const processNode = (child: Node) => {
+            addSyntheticNodes(children, pos, child.pos, node);
+            children.push(child);
+            pos = child.end;
+        };
+        const processNodes = (nodes: NodeArray<Node>) => {
+            addSyntheticNodes(children, pos, nodes.pos, node);
+            children.push(createSyntaxList(nodes, node));
+            pos = nodes.end;
+        };
+        // jsDocComments need to be the first children
+        forEach((node as JSDocContainer).jsDoc, processNode);
+        // For syntactic classifications, all trivia are classified together, including jsdoc comments.
+        // For that to work, the jsdoc comments should still be the leading trivia of the first child.
+        // Restoring the scanner position ensures that.
+        pos = node.pos;
+        node.forEachChild(processNode, processNodes);
+        addSyntheticNodes(children, pos, node.end, node);
+        scanner.setText(undefined);
+        return children;
+    }
+
+    function addSyntheticNodes(nodes: Push<Node>, pos: number, end: number, parent: Node): void {
+        scanner.setTextPos(pos);
+        while (pos < end) {
+            const token = scanner.scan();
+            const textPos = scanner.getTextPos();
+            if (textPos <= end) {
+                if (token === SyntaxKind.Identifier) {
+                    Debug.fail(`Did not expect ${Debug.showSyntaxKind(parent)} to have an Identifier in its trivia`);
+                }
+                nodes.push(createNode(token, pos, textPos, parent));
+            }
+            pos = textPos;
+            if (token === SyntaxKind.EndOfFileToken) {
+                break;
+            }
+        }
+    }
+
+    function createSyntaxList(nodes: NodeArray<Node>, parent: Node): Node {
+        const list = createNode(SyntaxKind.SyntaxList, nodes.pos, nodes.end, parent) as any as SyntaxList;
+        list._children = [];
+        let pos = nodes.pos;
+        for (const node of nodes) {
+            addSyntheticNodes(list._children, pos, node.pos, parent);
+            list._children.push(node);
+            pos = node.end;
+        }
+        addSyntheticNodes(list._children, pos, nodes.end, parent);
+        return list;
+    }
+
     class TokenOrIdentifierObject implements Node {
         public kind: SyntaxKind;
         public pos: number;
@@ -576,7 +555,7 @@ namespace ts {
      */
     function findInheritedJSDocComments(declaration: Declaration, propertyName: string, typeChecker: TypeChecker): SymbolDisplayPart[] {
         let foundDocs = false;
-        return flatMap(getAllSuperTypeNodes(declaration), superTypeNode => {
+        return flatMap(declaration.parent ? getAllSuperTypeNodes(declaration.parent) : emptyArray, superTypeNode => {
             if (foundDocs) {
                 return emptyArray;
             }
@@ -594,21 +573,6 @@ namespace ts {
         });
     }
 
-    /**
-     * Finds and returns the `TypeNode` for all super classes and implemented interfaces given a declaration.
-     * @param declaration The possibly-inherited declaration.
-     * @returns A filled array of `TypeNode`s containing all super classes and implemented interfaces if any exist, otherwise an empty array.
-     */
-    function getAllSuperTypeNodes(declaration: Declaration): ReadonlyArray<TypeNode> {
-        const container = declaration.parent;
-        if (!container || (!isClassDeclaration(container) && !isInterfaceDeclaration(container))) {
-            return emptyArray;
-        }
-        const extended = getClassExtendsHeritageClauseElement(container);
-        const types = extended ? [extended] : emptyArray;
-        return isClassLike(container) ? concatenate(types, getClassImplementsHeritageClauseElements(container)) : types;
-    }
-
     class SourceFileObject extends NodeObject implements SourceFile {
         public kind: SyntaxKind.SourceFile;
         public _declarationBrand: any;