Commit Graph
3020 Commits
Author SHA1 Message Date
Alexander TandGitHub a16c44180a fix(37940): add space after parameter decorator (#37959) 2020-04-15 11:42:29 -07:00
Wesley WighamandGitHub 141ee01c8c Retain imports in declaration emit if they augment an export of the importing file (#37820)
* Retain imports in declaration emit if they augment an export of the importing file

* (sp)

* Check that a merge occurs, just because
2020-04-13 12:31:14 -07:00
Wesley WighamandGitHub 6d25c01d09 Cache the regularized form of union types (#37749)
* Cache the regularized form of union types

* Inline function because why not

* Introduce two fastpasths into isRelatedTo
2020-04-02 23:54:24 -07:00
Anders HejlsbergandGitHub 349ae45a2c Reduce intersections with conflicting privates, elaborate on reasons (#37762)
* Elaborate on reasons for 'never' intersections

* Accept new API baselines

* Accept new baselines

* Add tests

* Accept new baselines

* Address CR feedback
2020-04-02 18:00:59 -07:00
Andrew BranchandGitHub 23b500cadf Don’t offer this. completions on self, window, global, globalThis. Disambiguate this. completions from others in details requests. (#37652)
* Special-case window, self, global, globalThis methods

* Disambiguate global and this property completions in details requests

* Hide the Map<boolean> implementation

* Update old tests

* Replace SymbolOriginKind stringification with dedicated enum
2020-03-31 12:40:57 -07:00
Ron BucktonandGitHub 4fc4c4e3d6 Revert 'awaited' type (#37610) 2020-03-25 18:39:45 -07:00
Ron BucktonandGitHub b58a29b808 Fix emit for optional chain with non-null assertion (#36539)
* Fix emit for optional chain with non-null assertion

* Treat '!' differently inside chain vs end of chain

* remove dead code and fix comment
2020-03-25 15:28:13 -07:00
e3ec7b18b8 Add the 'awaited' type operator (#35998)
* Add the 'awaited' type operator

* Add script to manually add reviewers to a PR when GH 'Suggested Reviewers' breaks

* Fix lint error in review script

* Only defer generic awaited type for possible thenable

* Add variance-like behavior for awaited

* Switch awaited type params to 'unreliable' variance

* fix typo in inferTypes

* LKG without syntax in lib

* LKG with new syntax in lib

* Add 'strictAwaitedTypes' flag

* Treat strictAwaitedTypes as strict-mode flag

* Rename TAll, remove duplicate definition of 'race'

* Apply suggestions from code review

Co-Authored-By: ExE Boss <3889017+ExE-Boss@users.noreply.github.com>

* Fix inference priority

* Update comment to isGenericAwaitableType

* Add overloads for then/catch to Promise

* Add inference heuristic for T | PromiseLike<T> (for any PromiseLike)

* Remove strictAwaitedTypes flag

Co-authored-by: ExE Boss <3889017+ExE-Boss@users.noreply.github.com>
2020-03-20 16:09:01 -07:00
Sheetal NandiandGitHub 5e9c43607f Handle auto import scenarios when using project references (#37482)
* Add test for project reference and auto import
Test for #34677

* Add project reference redirect to the possible file name to import if file is source of project reference redirect
Fixes the auto import suggestion when project is built

* Use fileExists that mimics presence of project reference redirect file when trying to get auto import file name
2020-03-19 16:53:44 -07:00
Andrew BranchandGitHub 237ea526f9 Preserve newlines from original source when printing nodes from TextChanges (#36688)
* Allow emitter to write multiple newlines in node lists

* Progress

* Progress

* Fix recomputeIndentation

* Add tests, fix leading line terminator count

* Do a bit less work when `preserveNewlines` is off

* Fix accidental find/replace rename

* Restore some monomorphism

* Fix single line writer

* Fix other writers

* Revert "Fix other writers"

This reverts commit 21b0cb8f3b.

* Revert "Fix single line writer"

This reverts commit e535e279f9.

* Revert "Restore some monomorphism"

This reverts commit e3ef42743a.

* Add equal position optimization to getLinesBetweenRangeEndAndRangeStart

* Add one more test

* Actually save the test file

* Rename preserveNewlines to preserveSourceNewlines

* Make ignoreSourceNewlines internal

* Optimize lines-between functions

* Add comment;

* Fix trailing line terminator count bug for function parameters

* Preserve newlines around parenthesized expressions

* Back to speculative microoptimizations, yay

* Don’t call getEffectiveLines during tsc emit at all
2020-03-19 09:46:00 -07:00
e60bbac84f Fix declaration emit when the packages are included through symlinks (#37438)
* Convert symlink scenarios to virtual FS where its symlinks are correctly maintained
Adds test for #36866

* Fix the casing issue when redirects differ in casing of the file

* Make ModuleSpecifierResolutionHost internal

* Refactoring for ModuleSpecifierResolutionHost

* If any of the file path option is from node_modules folder, consider only paths in node_modules folder

* Update src/services/utilities.ts

Co-Authored-By: Andrew Branch <andrewbranch@users.noreply.github.com>

Co-authored-by: Andrew Branch <andrewbranch@users.noreply.github.com>
2020-03-17 13:21:40 -07:00
Wesley WighamandGitHub 47b60ece0b Make substitution types even if the substitution base isnt a type variable (#37348)
* Make substitution types even if the substitution base isnt a type variable

* Broaden usage of getConditionalFlowTypeOfType to _all_ type lookups

* Align comments
2020-03-13 11:02:11 -07:00
Sheetal NandiandGitHub a76a16696d Move useSourceOfProjectReferenceRedirect to program so other hosts can use it too, enabling it for WatchHost (#37370) 2020-03-12 13:11:11 -07:00
Sheetal NandiandGitHub 1a9c8197ff Optimize module resolution cache for watch and editor (#37055)
* Refactor resolveName

* Have resolutions of failed lookups as array and resolved to fileName map
2020-03-11 14:35:26 -07:00
Anders HejlsbergandGitHub 6856c012d2 Use objects instead of closures for type mappers (#36576)
* Use objects instead of closures for type mappers

* Flatten combined type mappers

* Single point of creation for type mappers

* More optimizations

* Fix lint error

* Fewer symbol instantiations / discard type mapper after instantiation

* More optimizations

* Simplify mapper layout and cache in composite mappers

* Removing cache as it doesn't seem to matter much

* Get rid of identityMapper
2020-03-11 13:28:49 -07:00
ffde92349d Added @ts-expect-error to @ts-ignore directives (#36014)
* Added @ts-expect-error to @ts-ignore directives

Similar to `// @ts-ignore`, but will itself cause a new error diagnostic if it does not cause an existing diagnostic to be ignored.

Technical summary:
1. The scanner will now keep track of `CommentDirective`s it comes across: both `@ts-expect-error` and `@ts-ignore`
2. During type checking, the program will turn those directives into a map keying them by line number
3. For each diagnostic, if it's preceded by a directive, that directive is marked as "used"
4. All `@ts-expect-error` directives not marked as used generate a new diagnostic error

* Renamed to getDiagnosticsWithPrecedingDirectives per suggestion

* Added JSDoc comment I thought I did already

Co-authored-by: Orta <orta.therox+github@gmail.com>
2020-03-05 10:37:36 -05:00
Wesley WighamandGitHub dfc0b58fe7 Preserve arity for preserving js optional parameters (#37173) 2020-03-04 00:48:53 -08:00
Wesley WighamandGitHub b9c0999a2a Thread host.useCaseSensitiveFileNames through program and node builder into specifier generation (#37170) 2020-03-03 10:50:01 -08:00
Anders HejlsbergandGitHub be4b814a4c Reduce intersections by discriminants (#36696)
* Treat never-like intersections as never

* Accept new baselines

* Fix compiler issues revealed by increased intersection correctness

* Delete fourslash tests that are no longer applicable

* Include isNeverLikeIntersection check in getNormalizedType

* Erase never-like types in several more places

* Check that base types are not never-like

* Add comments

* Revert isNeverLikeType check in getIndexType (keyof shouldn't resolve member types)

* Introduce getReducedType for union and intersection types

* Don't reduce in getApparentType

* Avoid relationship check in resolveMappedTypeMembers

* Accept new baselines

* Don't call getReducedType in getIndexType

* Ensure reduced and unreduced forms of a type can compare identical

* Reduce types before converting them to string representation

* Accept new baselines

* Reduce intersections before obtaining keyof X

* Add tests

* Accept new baselines

* Fix comment in tests

* Don't infer from empty intersection types

* Add tests

* Accept new baselines

* Defer instantiation of mapped type property types

* Accept new baselines

* Include more precise type in diagnostic

* Accept new baselines

* Minor optimization

* Improve error message

* Optional properties in intersections are never discriminants
2020-02-28 17:06:44 -08:00
f9945f5acf Full support for CommonJS auto-imports in JS (#37027)
* Support add new requires

* Always use destructuring for requiring default exports

* Add more tests

* Update existing fourslash tests

* Use `getExportsAndPropertiesOfModule`

* Add UMD test

* Apply suggestions from code review

Fix typos

Co-Authored-By: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-28 14:34:20 -08:00
Titian Cernicova-DragomirandGitHub f883bf3acb Adding support for @implements. (#36292)
* Adding support for @implements.

* Fixed code review issues for @implements, added some more tests.

* Fixed declaration emit for @interface

* Improved getImplementsTypes to not cache the results since it is only used once.

* Removed unnecessary checks from getImplementsTypes
2020-02-27 09:27:37 -08:00
Andrew CaseyandGitHub b424f36e9a Expose call count for instantiateType in extendedDiagnostics (#36797)
* Expose call count for instantiateType in extendedDiagnostics

* Update API baselines
2020-02-26 12:55:28 -08:00
Wesley WighamandGitHub 4d5464e1f9 Revert "Support declaration emit for late bound element accesses assigned to functions in both TS and JS (#36593)" (#37034)
This reverts commit 3e4ce4777d.
2020-02-25 16:40:38 -08:00
Anders HejlsbergandGitHub 9ed73ebbbf Properly handle control flows from returns in try/catch within IIFE (#36901)
* Properly handle control flows from returns in try/catch within IIFE

* Accept new baselines

* Add tests

* Accept new baselines

* When end of finally is unreachable, end of try statement is too

* Add additional test case
2020-02-25 16:14:00 -08:00
Wesley WighamandGitHub 3e4ce4777d Support declaration emit for late bound element accesses assigned to functions in both TS and JS (#36593) 2020-02-25 13:45:27 -08:00
Wesley WighamandGitHub e120762390 Remove unneeded branch from getHelperName (#36998) 2020-02-25 11:29:45 -08:00
Andrew CaseyandGitHub b5bd38bcdc Convert UnionOrIntersectionType.couldContainTypeVariables to ObjectFlags (#36947)
...to save space (and possibly to reduce de-opts, since it appears to be
lazily set).
2020-02-24 18:18:39 -08:00
65e7acce58 Use getters to define live export bindings refresh (#35967)
* use getters to define live export bindings

* fix scoping in export* helper

* Object.defineProperty cannot be used in ES3 target

* Accept changed baselines

* Use function expression, not arrow function

* Update importStarHelper to match export helper in binding-making

* Fix whitespace

* Adjust whitespace in edited helpers

* Use new helper for setting bindings, use unscoped __exportStar helper for exports so helpers get reused more

* Accept updated baselines

* Use __createBinding for individual reexports when target is es3

* Remove unneeded type assertion

* Singeline the helpers

* Add check for createBinding helper, accept updated baselines with shortened helper

Co-authored-by: Michael Rawlings <mirawlings@ebay.com>
2020-02-24 15:36:14 -08:00
Andrew BranchandGitHub 4d1a1b850a Expose importModuleSpecifierEnding to protocol (#36725)
* Expose importModuleSpecifierEnding to protocol

* Update API baselines

* Add explicit auto setting
2020-02-20 13:59:56 -08:00
Josh GoldbergandGitHub 1aaf314678 Marked internal createAnonymousType type as allowing undefined Symbols (#36016) 2020-02-14 14:52:05 -08:00
Anders HejlsbergandGitHub b8b59489e1 Cache results of isGenericObjectType and isGenericIndexType (#36622) 2020-02-05 16:04:05 -08:00
Anders HejlsbergandGitHub 0a160323df Faster exit from isTypeRelatedTo with identityRelation (#36590)
* Faster exit from isTypeRelatedTo with identityRelation

* Reorganize a bit
2020-02-05 16:03:09 -08:00
70399e146e add support for Lift Template Literal Restriction (#23801)
* add support for Lift Template Literal Restriction

* rename file and improve comment and tests

* fix NoSubstitutionTemplateLiteral support

* extract tagged template and add more test

* avoid useless parameter

* fix incorrect return node if cannot transform

* accept baseline

* correctly baseline

* accept baseline

* fix merge break

* fix merge break

* inline rescan template head or no subsititution template

* update scan error

* add comment and fix lint

* refactor and fix lint

* avoid blank

* fix merge conflict

* fix again

* fix again

* use multiple target

* fix space lint

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-02-05 08:59:51 -08:00
ef8eb0c876 Fix contextually typed object literal completions where the object being edited affects its own inference (#36556)
* Conditionally elide a parameter from contextual type signature calculation

* Slightly different approach to forbid inference to specific expressions

* Handle nested literals and mapped types correctly

* Delete unused cache

* Rename ContextFlags.BaseConstraint and related usage

* Add tests from my PR

* Update ContextFlags comment

Co-Authored-By: Wesley Wigham <wwigham@gmail.com>

* Update comments and fourslash triple slash refs

Co-authored-by: Wesley Wigham <wwigham@gmail.com>
2020-01-31 15:37:18 -08:00
Nathan Shively-SandersandGitHub ad249043da resolvedJSDocType should cache on node, not symbol (#36561) 2020-01-31 15:19:45 -08:00
Ron BucktonandGitHub f24f36350b Fixes JSX attribute escaping when parent pointers are missing (#35743)
* Fixes JSX attribute escaping when parent pointers are missing

* Fix whitespace change
2020-01-30 16:52:31 -08:00
Ron BucktonandGitHub 6769313eee Fix potential leaks in checker (#36491) 2020-01-28 16:48:28 -08:00
Alexander TandSheetal Nandi c239626f23 fix(36140): handle quotesPreference option in interface implementation (#36398) 2020-01-27 12:25:31 -08:00
Wesley WighamandGitHub 08e6bc20bb Trampolines for large binary expressions (#36248)
* WIP

* Test no longer crashes, but emit trampoline is incomplete and skips pipeline phases

* Fix lints, use non-generator trampoline in emit (still skips pipeline)

* Final version with emitBinaryExprssion work stack that is only used if possible

* Fix lints

* retarget to es2015 for testing

* Use bespoke state machine trampolines in binder and checker

* Remove now extraneous code in parser

* Adjust fixupParentReferences to use a depth first preorder traversal rather than breadth first

* Reintroduce incremental fast bail in fixupParentReferences

* Revert target to es5

* PR feedback

* Small edit for devops rebuild with updated definition

* Fix comment nits, add internally extraneous check back into transformer
2020-01-24 16:29:55 -08:00
Andrew BranchandGitHub b05dde747c Update type-only import semantics to allow type queries (#36092)
* Change type-only semantics to allow type queries

* Don’t error using type-only import in ambient context

* Fix default import

* Fix namespace import

* Update more baselines

* Prevent circular resolution

* Track const enum expression usage

* Update baselines

* Perf tuning 1

* Test commit for perf impact

* Weave type-only alias declaration finding into alias resolution

* Fix namespace import of type-only exported symbols

* type-only exports do not contribute to the module object type

* Update APIs

* Fix enum casing, remove type-only conversion suggestion

* Short circuit type-only checks in resolveEntityName faster

* Fix casing in API

* Remove unused parameter

* Fix error on qualified names in type queries

* Allow type-only imports in computed property names

* Fix computed property names of types and abstract members

* Remove unused util

* Commit missing baselines

* Rename “check” functions so as not to overload the word “check”
2020-01-23 12:53:36 -08:00
Alexander TandNathan Shively-Sanders eeff036519 fix(35954): Change spelling for private field incorrectly fixes to a string property (#36079)
* fix(35954): code fix incorrectly fixes private properties spelling issues

* remove duplicate function calls
2020-01-16 09:01:21 -08:00
Alexander TandNathan Shively-Sanders dbd55b3928 fix(35944): show spell checking quick fix for non-existent private named property access (#36195) 2020-01-15 16:56:40 -08:00
Eli Barzilay 9fbcdb1edb Resurrect SuppressAnyReturnType, but make it used only at the toplevel 2020-01-07 17:12:43 -05:00
Eli Barzilay 724f426468 Remove SuppressAnyReturnType
Following a discussion with Ryan, it seems best to leave any `any`s in
the generated code.
2020-01-07 17:12:43 -05:00
Daniel RosenwasserandGitHub f807b57356 Add s to importsNotUsedAsValue (#36037)
* Pluralize end of 'importsNotUsedAsValue'.

* Updated baselines.
2020-01-06 13:23:47 -08:00
Andrew BranchandDaniel Rosenwasser 3b396e6124 Type-only imports and exports (#35200)
* Add type-only support for export declarations

* Use a synthetic type alias instead of binding type-only exports as a type alias

* Works for re-exports!

* isolatedModules works fine

* Diagnostic for type-only exporting a value

* Start isolated modules codefix

* Update for LKG control flow changes

* Type-only import clause parsing

* Type-only default import checking

* Type-only named imports

* Fix isolated modules error

* Filter namespaces down to type-only

* Fix class references

* Test nested namespaces

* Test circular type-only imports/exports

* Fix getTypeAtLocation for type-only import/export specifiers

* Fix type-only generic imports

* Update public APIs

* Remove unused WIP comment

* Type-only namespace imports

* Fix factory update calls

* Add grammar errors for JS usage and mixing default and named bindings

* Update updateExportDeclaration API baseline

* Fix grammar checking import clauses

* Enums, sort of

* Dedicated error for type-only enum

* Skip past type-only alias symbols in quick info

* Update error code in baseline

* WIP: convertToTypeOnlyExport

* isolatedModules codefix (single export declaration)

* isolatedModules code fix (all)

* Stop eliding non-type-only imports by default, add compiler flag

* Update to match updated diagnostic messages

* Update more baselines

* Update more tests

* Auto-import as type-only

* Add codefix for splitting type-only import with default and named bindings

* Add more services tests

* Add targeted error message for "export type T;" when T exists

* Add targeted error for "import type T = require(...)"

* Flip emit flag

* Add test for preserveUnusedImports option

* Fix flag flip on import =

* Make compiler option string-valued

* Fix merge conflicts

* Add --importsNotUsedAsValue=error

* Phrasing of messages.

Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
2020-01-03 14:39:32 -08:00
Sheetal NandiandGitHub 18269c0fc8 Add assumeChangesOnlyAffectDirectDependencies as a option to skip checking and generating .d.ts files for files indirectly importing affected file (#35711)
* Baselining tsc --watch output

* Add noIndirectImports as a option to skip checking and generating .d.ts files for files indirectly importing affected file
Fixes #33329

* Rename option to assumeChangesOnlyAffectDirectDependencies

* Description change as per feedback
2020-01-03 13:02:45 -08:00
36c87aca8a Private named instance fields (#30829)
* Fix display of private names in language server

Signed-off-by: Joseph Watts <jwatts43@bloomberg.net>
Signed-off-by: Max Heiber <max.heiber@gmail.com>

* Parse private names

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* update parser error recovery tests to use ¬ not #

The intent of the tests seemed to be to
regiment the behavior of the parser
when a weird symbol is encountered.

The `#` is now taken by private identifiers,
so `¬` seems like a good new choice for
keeping the diff small, since it also fits in
16 bits (wide emojis would be treated
as multiple characters, since the scanner
uses ++).

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* Private Name Support in the Checker (#5)

- [x] treat private names as unique:
    - case 1: cannot say that a variable is of a class type unless the variable points to an instance of the class
        - see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesUnique.ts)
    - case 2: private names in class hierarchies do not conflict
        - see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoConflictWhenInheriting.ts)
- [x] `#constructor` is reserved
    - see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNameConstructorReserved.ts)
    - check in `bindWorker`, where every node is visited
- [x] Accessibility modifiers can't be used with private names
    - see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoAccessibilityModifiers.ts)
    - implemented in `checkAccessibilityModifiers`, using `ModifierFlags.AccessibilityModifier`
- [x] `delete #foo` not allowed
- [x] Private name accesses not allowed outside of the defining class
    - see test: https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNameNotAccessibleOutsideDefiningClass.ts
    - see [test](https://github.com/mheiber/TypeScript/tree/checker/tests/cases/conformance/classes/members/privateNames/privateNamesNoDelete.ts)
    - implemented in `checkDeleteExpression`
- [x] Do [the right thing](https://gist.github.com/mheiber/b6fc7adb426c2e1cdaceb5d7786fc630) for nested classes

mv private name tests together

more checker tests for private names

update naming and cleanup for check private names

for private name support in the checker:
- make names more consistent
- remove unnecessary checks
- add utility function to public API
- other small cleanup

Move getPropertyNameForUniqueESSymbol to utility

for consistency with other calculation of
special property names (starting with __),
move the calculation of property names for
unique es symbols to `utilities.ts`.

private name tests strict+es6

Update private name tests to use 'strict'
type checking and to target es6 instead of
default. Makes the js output easier to read
and tests more surface area with other
checker features.

error message for private names in obj literals

Disallow decorating private-named properties
because the spec is still in flux.

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* Add private instance field transformation, pr feedback

Implements private instance fields on top of the class properties refactor.

This commit also includes incorporation of PR feedback on the
checker, parser, and transformer in order to make the rebase
manageable.

Co-Authored-By: Max Heiber <max.heiber@gmail.com>
Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>

Signed-off-by: Joey Watts <jwatts43@bloomberg.net>
Signed-off-by: Max Heiber <max.heiber@gmail.com>

Incorporate PR feedback

Fix checker crash with new block scoped bindings

Add classExpressionInLoop test

Update baselines for private name errors

Apply suggestions from code review

Fix privateNameFieldCallExpression test

Remove unnecessary comment

Fix PropertyAccessEntityNameExpression type

Remove PrivateName from PropertyNameLiteral

Add createPrivateName

Remove PrivateName type from textSourceNode

Add Debug asserts for invalid syntax kinds

Don't output private name syntax when undeclared

Make PrivateName extend Node

Update baselines for public API

Fix completions in language server

Fix fourslash test crash

intern private name descriptions

undo expensive node.name.parent assignment

Back the way things were on `master`: only
assign node.name.parent when we need to

Add tests for private names and JSDoc

Patch hoverOverPrivateName fourslash test

Fix goToDefinition for private-named fields

remove Debug.fail for private name outside class

Remove Debug.fail in binder.ts::`getDeclarationName`.
It turns out this code path *does* get hit (intentionally).

For best error messages, return `undefined` and rely
on the parser generating a good error message

"Private names are not allowed outside class bodies"

Add rbuckton test cases for private names

These test cases specifically exercise where
we needed to use name-mangling. They are
cases where private names have the same
description.

- private names no conflict when inheriting
- private names distinct even when
the two classes have the same name

check dup instance+static private identifiers

class A {
    #foo;
    static #foo;
}

not allowed because static and private names
share the same lexical scope
https://tc39.es/proposal-class-fields/#prod-ClassBody

refactor getPropertyForPrivateName, rel spans

refactor getPropertyForPrivateName so
it is easier to read (use findAncestor instead
of loop).

Fix bugs in getPropertyForPrivateName:
- make it work with deeply-nested classes with
and without shadowing
- make it catch shadowing when the conflict is
between static and instance
private name descriptions (these can actually
clash)

And add related spans to diagnostics
for getPropertyForPrivateName

catch conflicts between static and instance
private identifiers:
- cannot have an instance and static private identifier
  with the same spelling, as there is only one namespace
  for private names

rename 'PrivateName' to 'PrivateIdentifier'

to match the change of wording in the spec
prposal:

https://tc39.es/proposal-class-fields/#sec-syntax

The rename in the spec was to avoid confusion
between the AST Node PrivateIdentifier
and the internal spec type PrivateName.

So one uses the [[Description]] of a
PrivateIdentifier to look up the PrivateName
for a given scope.

This corresponds closely to our implementation
in the binder and checker:
- we mangle PrivateIdentifier.escapedText to
get a `key` which we use to get the symbol
for a property

f

getLiteralTypeFromProperty-check privateIdentifier

rename and simplify privateNameAndAny test case

make it clearer that all this test is showing is
that we allow accessing arbitrary private identifiers
on `any`.

Note: we could have something more sound here by
checking that there is a private-named field declaration
in a class scope above the property access.

Discussion:
https://github.com/microsoft/TypeScript/pull/30829/files#r302760015

Fix typo in checker

s/identifer/identifier

remove accidental change

patch fourslash test broken by isPrivateIdentifier

just needed to add a check to see if the symbol
.name is defined

extract reportUnmatchedProperty

per @nsandersn feedback

propertiesRelatedTo was getting to long

pull out the unmatchedProperty reporting into
a seprate function

fix typo in private names test

Fix type soundness with private names

Remove PrivateIdentifier from emit with Expr hint

Fixup helpers and set function name for privates

remove accidentally-committed baselines

These baselines somehow ended up in this pr,
though they have nothing to do with the changes

Revert "getLiteralTypeFromProperty-check privateIdentifier"

This reverts commit bd1155c300bc3517a0543580f4790268f86e473f.

reason: the check for isIdentifier in
getLiteralTypeFromProperty is superfluous because
we do this check in getLiteralTypeFromPropertyName

Update comment in private name uniqueness test 3

I think the comments were not accurate and that we
export the error on `this.#x = child.#x` because:
- private names are lexically scoped: the code in question is not in a
lexical scope under the definition of Child's #x.
- private names are private to their containing class: never inherited

This expected behavior matches that of Chrome Canary and
my understanding of the spec

test private names use before def, circular ref

test private names use before def, circular ref

update diagnosticMessages s/delete/'delete'

per @DanielRosenwasser and @sandersn guidance,
use this style in diagnostic messages:

"operand of a 'delete' operator" (single quotes)

rather than old style:

"operand of a delete operator" (single quotes)

This is for consistency, as we use the new
style in the privateIdentifiers error messages
and it is consistent with our messages about
other operators

incorporate private names early exit feedback

and code style change to use a ternary
instead of if so we can 'const'

require private-named fields to be declared in JS

All fields must be declared in TS files.

In JS files, we typically do not have this requirement.

So special-case private fields, which must always
be declared (even in JS files, per spec)

update debug failure for es2015 private identifier

Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>

fix checker handling of private name in subclasse

update checker and tests to account for the
following ts features:

- private names do not participate in
the prototype chain, but *are* assigned
in the parent class' constructor. So
parent can access its *own* private fields
on instances of the subclass

Add more tests for private-named fields in JS

add test to hit symbolToExpression w private names

symbolToExpression knows about private names
add a test to exercise this code path

ban private-named static methods (not supported yet)

ban private-named methods (not supported yet)

ban private-named accessors (not supported yet)

fix privateIdentifier fourslash test

change assertion throw to return

Co-Authored-By: Ron Buckton <ron.buckton@microsoft.com>

Update comment in checker.ts re reserved members

Remove case for privateIdentifier in EntityNameExpr

Remove case for privateIdentifier in
EntityNameExpr. That code path is never hit,
and privateIdnetifiers cannot be entity names.

remove unnecessary parentheses

Ban private identifier in enum

As the new test, 'privateNameEnumNoEmit',
shows, the checker now correctly makes
a diagnostic for private identifiers in enums.

However, when noEmit is false we
hit this assertion in the transformer.

This assertion will have to be removed
so that we have a diagnostic here instead
of an assertion error.

When the assertion is removed,
the 'privateNameEnum' baseline
will have to be updated

Fix destructuring assignment, use createCallBinding, remove unneeded helper

Add class private field helpers to external helpers

Remove private identifier enum assertion, use missing identifiers

Fix hash map inefficiency by only using get

Update baselines with empty identifier change

Add privateNameEnum test baselines

Fix private identifier destructuring (array assignment defaults, unique names)

Use createPrivateIdentifierAssignment in destructuring transform

Fix lint error

Separate destructuring target visitor from regular visitor

Fix destructuring assignment with this bindings

Fix destructuring assignment with this bindings

Fix syntax error with destructuring assignment output

Disallow private identifiers in property signatures

remove duplicate test baselines

Add tests for undeclarated private identifiers

remove unnecessary cast

Nicer error message for mis-placed hashbang

Workaround v8 bug with destructured assignments

Optimize private identifier stack lookup

Avoid the cost of performing an array lookup to look at the top of the
private identifier environment stack.

Change function name to be more specific

Changes "getOperatorForCompoundAssignment" to
"getNonAssignmentOperatorForCompoundAssignment" now that this
function is accessible to the entire compiler.

Improve test case for private name assignment

Adds a compound assignment test case for a class with private names
being declared on the left-hand-side of the assignment expression.

Remove extra non-private-field test

Remove isPrivateIdentifierAssignmentExpression helper

Don't transform private names in ESNext target

Preserve private fields initialized to functions

Move function expressions to outer scope for efficiency

Add WeakMap collision check

Modify potential WeakMap collision condition

Fix this property assignment binding with private names

Add correct error message for WeakMap collision

Add error for statements before super with private identifiers

Refactor getPropertyForPrivateIdentifier

Add test for private identifier fields initialized to class exprs

Fix shebang errors

Fix private errors on index signatures

Add codefix for missing private property

Update error messages for unsupported private features

Fix inheritance-related errors

Fixes inheritance-related errors with private identifiers by resolving
properties from base classes. Private identifiers do not show up as
properties on a union type, so those do not type-check.

Add test for interface extending class with private access

Remove debugging log

Remove name assignment from private named functions

Rename to getPrivateIdentifierPropertyOfType

Fix index signature test comment

Fix test target syntax error

Change error messages

patch private identifiers outside class bodies

Add test for private identifier with ooo super

Add test for a class with a private identifier
with a non-preambly (for example, not a comment)
statement before 'super':

should error, saying 'super' must come first

Fix nits

incorporate PR feedback

Incorporate checker feedback

- reorganize if statements in checkFunctionOrConstructorSymbol
- remove overload for getPrivateIdentifierPropertyOfType

reorganize if statements in checkFunctionOrConstructorSymbol

test for private names with JSX

use getPropertyOftype in getPropertyForPrivateIdentifier

getPrivateIdentifierPropertyOfType error on synthetic

make getPrivateIdentifierPropertyOfType  error
if given a node that is not from the parse tree

Simplify checkPrivateIdentifierPropertyAccess

use getPropertiesOfType instead of
rehashing that logic

test for private identifiers w decl merging

fix test target for privateNameDeclarationMerging

update baselines

Fix private identifier ++/-- numeric coercion

Remove 'downleveled' from super error

Fix bad comments in helper call emit

Error on private identifiers in JSX tag names

Add more private identifier tests

Add es2015 target for private name destructured binding test

Add privateNameConstructorSignature test

Add test for navigation bar w private identifier

Remove spurious line from test

// in js file
class A {
    exports.#foo = 3; // should error
}

The above line failed to produce an error
when run using the test harness.

When using tsc or the language server,
we got the expected error message.

Removing the troublesome line, as it
seems to say more about the test runner
than about the code it is testing.

Fix inefficient constructor generation

dts: don't emit type for private-identified field

Do not emit types for private-identified fields
when generating declaration files.

// example.ts
export class A {
    #foo: number;
}

// example.d.ts

export declare class A {
    #foo;
}

**This is not ideal!**

The following would be better:

// example.d.ts

export declare unique class A {
    #foo;
}

See discussion:

https://github.com/microsoft/TypeScript/pull/33038#issuecomment-530321165

notice when private-identified field unused

Notice when private-identified fields are unused,
and implement the same behavior as for unused
private-modified fields.

This is used in the language server to make things
grayed out.

This case generates an error when --noUnusedLocals
flag is passed to tsc:
    - "<name> is declared but never used"

accept baselines

Revert "dts: don't emit type for private-identified field"

This reverts commit e50305df5fb88121486291abad14478f5339a455.

Instead of just excluding the type from private identifier
emit, only emit a single private identifier
per class.

This accomplishes nominality while
hiding implementation detail that
is irrelevant to .d.ts consumers

only emit a single private identifier in dts

In dts emit, emit at most one private identifier,
and rename it to `#private`.

refactor getPrivateIdentifierPropertyOfType

- safer check for wehther is parse tree node
- return undefined when not found (instead of
a Debug.fail)

Incorporate PR feedback

Don't rely on parent pointers in transform

Passes context about whether the postfix unary expression value is
discarded down the tree into the visitPostfixUnaryExpression function.

Remove orphaned test baseline files

remove unreachable if

Check `any`-typed private identified fields

Update private identifier incompatible modifier checks

- disallow 'abstract' with private identifiers
- s/private-named-property/private identifier

Add additional call expression test cases

Fix disallow 'abstract' with private identifier

Static private identifiers not inherited

Including this in the PR for private
instance fields even though static
private identifiers are banned.

Reason: this change
improves quality of error messages,
see test case.

Thanks Ron!

Simplifiy private identifier 'any' type handling

Error on private identifier declarations for ES5/ES3

Bind `this` for private identifier property tagged template literals

Fix target for jsdocPrivateName1 test

Update getPrivateIdentifierPropertyOfType API

Make it easier to use by accepting a string
and location, rather than a PrivateIdentifier.

Thanks Ron!

remove orphaned tests

rename test

remove duplicate tests

Remove unrelated error from test

update diagnostic message 'private identifier'

The nodes for hash private fields are now
called 'private identifier'. Update one last
diagnostic message to use the new terminology.

refine solution for static private identifier fields

- use `continue` instead of `filter` for perf
- better naming
- make it clear the current solution will
need to be altered when we lift the ban on
static private identifier fields, including
a test case that should change in the future

Fix display of private identifiers in lang server

Fix bug where private identifiers in completion
tooltips in the playground were showing up
as the symbol table entries (with underscores and such).

https://github.com/microsoft/TypeScript/pull/30829#issuecomment-534157560
Signed-off-by: Max Heiber <max.heiber@gmail.com>

* fix privateIdentifier w !useDefineForClassFields

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* Disallow PrivateIdentifier in Optional Chains

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* restrict privateIdentifier completions correctly

Don't autocomplete privateIdentifiers in
places where they are not allowed.

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* make PrivateIdentifier not a PropertyNameLiteral

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* Added test.

* Accepted baselines.

* Update symbol serializer to understand private fields in JS `.d.ts` emit.

* Accepted baselines.

* fix for private field no initializer esnext

Signed-off-by: Max Heiber <max.heiber@gmail.com>

* fix private fields .d.ts emit for JS w expando

fix bug where the following in a JS file
would lead to a `#private` in the .d.ts:

```js
class C {
    constructor () {
        this.a = 3
    }
}
```

Co-authored-by: Joey Watts <joey.watts.96@gmail.com>
Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
2019-12-27 13:07:35 -08:00
Kagami Sascha RosylightandDaniel Rosenwasser 0f5ddd2ea0 Add es2020 transformation (#35518)
* Add es2020 transformation

* Add missing comma

Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>
2019-12-23 16:45:17 -08:00
Ron BucktonandGitHub 114dad7f56 Add top-level await for esnext and system modules (#35813) 2019-12-22 13:24:31 -08:00