vendor tsgo

tools/tsgo/internal/fourslash/tests/goToSourceDefinitionMergedDeclarations_test.go

@@ -0,0 +1,36 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToSourceMergedDeclarationDedup(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When a symbol has merged declarations (class + namespace), source
+	// definition deduplicates them and navigates to the single source class.
+	const content = `// @moduleResolution: bundler
+// @Filename: /home/src/workspaces/project/node_modules/pkg/package.json
+{ "name": "pkg", "main": "./index.js", "types": "./index.d.ts" }
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.d.ts
+export declare class /*dtsClass*/Util {
+    run(): void;
+}
+export declare namespace Util {
+    export const version: string;
+}
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+export class /*targetUtil*/Util {
+    run() {}
+}
+Util.version = "1.0";
+// @Filename: /home/src/workspaces/project/index.ts
+import { /*importUtil*/Util } from "pkg";
+const u: /*typeRef*/Util = new Util();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "importUtil", "typeRef")
+}