🤖 Pick PR #57778 (fix type import check for default-i...) into release-5.4 (#58116)

Co-authored-by: Lyu, Wei-Da <[email protected]>

Author: TypeScript Bot

src/services/completions.ts

@@ -2674,7 +2674,8 @@ export function getCompletionEntriesFromSymbols(
     }
 
     function symbolAppearsToBeTypeOnly(symbol: Symbol): boolean {
-        return !(symbol.flags & SymbolFlags.Value) && (!isInJSFile(symbol.declarations?.[0]) || !!(symbol.flags & SymbolFlags.Type));
+        const flags = getCombinedLocalAndExportSymbolFlags(skipAlias(symbol, typeChecker));
+        return !(flags & SymbolFlags.Value) && (!isInJSFile(symbol.declarations?.[0]) || !!(flags & SymbolFlags.Type));
     }
 }
 

tests/cases/fourslash/jsFileImportNoTypes2.ts

@@ -0,0 +1,59 @@
+/// <reference path="fourslash.ts" />
+
+// @allowJs: true
+
+// @Filename: /default.ts
+//// export default class TestDefaultClass {}
+
+// @Filename: /defaultType.ts
+//// export default interface TestDefaultInterface {}
+
+// @Filename: /reExport/toReExport.ts
+//// export class TestClassReExport {}
+//// export interface TestInterfaceReExport {}
+
+// @Filename: /reExport/index.ts
+//// export { TestClassReExport, TestInterfaceReExport } from './toReExport';
+
+// @Filename: /exportList.ts
+//// class TestClassExportList {};
+//// interface TestInterfaceExportList {};
+//// export { TestClassExportList, TestInterfaceExportList };
+
+// @Filename: /baseline.ts
+//// export class TestClassBaseline {}
+//// export interface TestInterfaceBaseline {}
+
+// @Filename: /a.js
+//// import /**/
+
+verify.completions({
+    marker: "",
+    isNewIdentifierLocation: true,
+    exact: [
+        {
+            name: "TestClassBaseline",
+            insertText: "import { TestClassBaseline } from \"./baseline\";",
+            source: "./baseline",
+        },
+        {
+            name: "TestClassExportList",
+            insertText: "import { TestClassExportList } from \"./exportList\";",
+            source: "./exportList",
+        },
+        {
+            name: "TestClassReExport",
+            insertText: "import { TestClassReExport } from \"./reExport\";",
+            source: "./reExport",
+        },
+        {
+            name: "TestDefaultClass",
+            insertText: "import TestDefaultClass from \"./default\";",
+            source: "./default",
+        },
+    ],
+    preferences: {
+        includeCompletionsForImportStatements: true,
+        includeCompletionsWithInsertText: true,
+    }
+});