Merge branch 'master' into pedanticPropertyLookup

Author: Kingwl

.github/workflows/sync-branch.yaml

@@ -21,6 +21,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         ref: ${{ github.event.inputs.branch_name || github.event.client_payload.branch_name }}
+        fetch-depth: 0
     # This does a test post-merge and only pushes the result if the test succeeds
     # required client_payload members:
     # branch_name - the target branch

README.md

@@ -33,8 +33,8 @@ There are many ways to [contribute](https://github.com/microsoft/TypeScript/blob
 * Help each other in the [TypeScript Community Discord](https://discord.gg/typescript).
 * Join the [#typescript](https://twitter.com/search?q=%23TypeScript) discussion on Twitter.
 * [Contribute bug fixes](https://github.com/microsoft/TypeScript/blob/master/CONTRIBUTING.md).
-* Read the language specification ([docx](https://github.com/microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification.docx?raw=true),
- [pdf](https://github.com/microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification.pdf?raw=true), [md](https://github.com/microsoft/TypeScript/blob/master/doc/spec.md)).
+* Read the archived language specification ([docx](https://github.com/microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification%20-%20ARCHIVED.docx?raw=true),
+ [pdf](https://github.com/microsoft/TypeScript/blob/master/doc/TypeScript%20Language%20Specification%20-%20ARCHIVED.pdf?raw=true), [md](https://github.com/microsoft/TypeScript/blob/master/doc/spec-archived.md)).
 
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see
 the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected])

package-lock.json

@@ -15,9 +15,9 @@ async function produceLKG() {
     await copyLibFiles();
     await copyLocalizedDiagnostics();
     await copyTypesMap();
-    await buildProtocol();
     await copyScriptOutputs();
     await copyDeclarationOutputs();
+    await buildProtocol();
     await writeGitAttributes();
 }
 

scripts/produceLKG.ts

@@ -174,12 +174,14 @@ namespace ts {
     const binder = createBinder();
 
     export function bindSourceFile(file: SourceFile, options: CompilerOptions) {
+        tracing.begin(tracing.Phase.Bind, "bindSourceFile", { path: file.path });
         performance.mark("beforeBind");
         perfLogger.logStartBindFile("" + file.fileName);
         binder(file, options);
         perfLogger.logStopBindFile();
         performance.mark("afterBind");
         performance.measure("Bind", "beforeBind", "afterBind");
+        tracing.end();
     }
 
     function createBinder(): (file: SourceFile, options: CompilerOptions) => void {
@@ -2806,9 +2808,9 @@ namespace ts {
                 return symbol;
             });
             if (symbol) {
-                const flags = isClassExpression(node.right) ?
-                    SymbolFlags.Property | SymbolFlags.ExportValue | SymbolFlags.Class :
-                    SymbolFlags.Property | SymbolFlags.ExportValue;
+                const isAlias = isAliasableExpression(node.right) && (isExportsIdentifier(node.left.expression) || isModuleExportsAccessExpression(node.left.expression));
+                const flags = isAlias ? SymbolFlags.Alias : SymbolFlags.Property | SymbolFlags.ExportValue;
+                setParent(node.left, node);
                 declareSymbol(symbol.exports!, symbol, node.left, flags, SymbolFlags.None);
             }
         }

src/compiler/binder.ts

@@ -493,10 +493,10 @@ namespace ts {
         return !state.semanticDiagnosticsFromOldState.size;
     }
 
-    function isChangedSignagure(state: BuilderProgramState, path: Path) {
+    function isChangedSignature(state: BuilderProgramState, path: Path) {
         const newSignature = Debug.checkDefined(state.currentAffectedFilesSignatures).get(path);
-        const oldSignagure = Debug.checkDefined(state.fileInfos.get(path)).signature;
-        return newSignature !== oldSignagure;
+        const oldSignature = Debug.checkDefined(state.fileInfos.get(path)).signature;
+        return newSignature !== oldSignature;
     }
 
     /**
@@ -509,7 +509,7 @@ namespace ts {
             return;
         }
 
-        if (!isChangedSignagure(state, affectedFile.resolvedPath)) return;
+        if (!isChangedSignature(state, affectedFile.resolvedPath)) return;
 
         // Since isolated modules dont change js files, files affected by change in signature is itself
         // But we need to cleanup semantic diagnostics and queue dts emit for affected files
@@ -522,7 +522,7 @@ namespace ts {
                 if (!seenFileNamesMap.has(currentPath)) {
                     seenFileNamesMap.set(currentPath, true);
                     const result = fn(state, currentPath);
-                    if (result && isChangedSignagure(state, currentPath)) {
+                    if (result && isChangedSignature(state, currentPath)) {
                         const currentSourceFile = Debug.checkDefined(state.program).getSourceFileByPath(currentPath)!;
                         queue.push(...BuilderState.getReferencedByPaths(state, currentSourceFile.resolvedPath));
                     }