Synthesize namespace records for proper esm interop (#19675)

* Integrate importStar and importDefault helpers

* Accept baselines

* Support dynamic imports, write helpers for umd module (and amd is possible) kinds

* Accept baselines

* Support AMD, use same helper initialization as is normal

* update typechecker to have errors on called imported namespaces and good error recovery with a quickfix

* Overhaul allowSyntheticDefaultExports to be safer

* Put the new behavior behind a flag

* Rename strictESM to ESMInterop

* ESMInterop -> ESModuleInterop, make default for tsc --init

* Rename ESMInterop -> ESModuleInterop in module.ts, add emit test (since fourslash doesnt do that)

* Remove erroneous semicolons from helper

* Reword diagnostic

* Change style

* Edit followup diagnostic

* Add secondary quickfix for call sites, tests forthcoming

* Add synth default to namespace import type, enhance quickfix

* Pair of spare tests for good measure

* Fix typos in diagnostic message

* Improve comment clarity

* Actually accept the updated changes to the esmodule interop description

* ESModule -> esModule

* Use find and not forEach

* Use guard

* Rely on implicit falsiness of Result.False

* These should have been emit flags

src/compiler/commandLineParser.ts

@@ -402,6 +402,13 @@ namespace ts {
             category: Diagnostics.Module_Resolution_Options,
             description: Diagnostics.Allow_default_imports_from_modules_with_no_default_export_This_does_not_affect_code_emit_just_typechecking
         },
+        {
+            name: "esModuleInterop",
+            type: "boolean",
+            showInSimplifiedHelpView: true,
+            category: Diagnostics.Module_Resolution_Options,
+            description: Diagnostics.Enables_emit_interoperability_between_CommonJS_and_ES_Modules_via_creation_of_namespace_objects_for_all_imports_Implies_allowSyntheticDefaultImports
+        },
         {
             name: "preserveSymlinks",
             type: "boolean",
@@ -704,7 +711,8 @@ namespace ts {
     export const defaultInitCompilerOptions: CompilerOptions = {
         module: ModuleKind.CommonJS,
         target: ScriptTarget.ES5,
-        strict: true
+        strict: true,
+        esModuleInterop: true
     };
 
     let optionNameMapCache: OptionNameMap;