vendor tsgo

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

@@ -0,0 +1,30 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToSourceForwardedReExportChain(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When an implementation file re-exports from another file, source
+	// definition follows the re-export chain to the actual implementation.
+	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 function helper(): string;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+export { helper } from './impl.js';
+// @Filename: /home/src/workspaces/project/node_modules/pkg/impl.js
+export function /*targetHelper*/helper() { return "ok"; }
+// @Filename: /home/src/workspaces/project/index.ts
+import { /*importHelper*/helper } from "pkg";
+helper();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "importHelper")
+}