fix(45192): Implement interface only working after specifying import

src/services/codefixes/importFixes.ts

@@ -211,7 +211,7 @@ namespace ts.codefix {
     }
 
     function getImportFixForSymbol(sourceFile: SourceFile, exportInfos: readonly SymbolExportInfo[], moduleSymbol: Symbol, symbolName: string, program: Program, position: number | undefined, preferTypeOnlyImport: boolean, useRequire: boolean, host: LanguageServiceHost, preferences: UserPreferences) {
-        Debug.assert(exportInfos.some(info => info.moduleSymbol === moduleSymbol), "Some exportInfo should match the specified moduleSymbol");
+        Debug.assert(exportInfos.some(info => info.moduleSymbol === moduleSymbol || info.symbol.parent === moduleSymbol), "Some exportInfo should match the specified moduleSymbol");
         return getBestFix(getImportFixes(exportInfos, symbolName, position, preferTypeOnlyImport, useRequire, program, sourceFile, host, preferences), sourceFile, program, host, preferences);
     }
 

tests/cases/fourslash/codeFixClassImplementInterfaceAutoImportsReExports.ts

@@ -0,0 +1,30 @@
+/// <reference path='fourslash.ts' />
+
+// @Filename: node_modules/test-module/index.d.ts
+////declare namespace e {
+////    interface Foo {}
+////}
+////export = e;
+
+// @Filename: a.ts
+////import { Foo } from "test-module";
+////export interface A {
+////    foo(): Foo;
+////}
+
+// @Filename: b.ts
+////import { A } from "./a";
+////export class B implements A {}
+
+goTo.file("b.ts");
+verify.codeFix({
+    description: "Implement interface 'A'",
+    newFileContent:
+`import { Foo } from "test-module";
+import { A } from "./a";
+export class B implements A {
+    foo(): Foo {
+        throw new Error("Method not implemented.");
+    }
+}`
+});