vendor tsgo

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

@@ -0,0 +1,53 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToSourceAliasedImportWithPrecedingExports(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When importing { original as alias }, the module specifier path resolves
+	// the alias text (not the original name). If the target function is NOT the
+	// first export in the .js file, the entry-declaration fallback will point to
+	// the wrong declaration. The fix should resolve to the original export name.
+	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 unrelated(): void;
+export declare function original(): string;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+export function unrelated() {}
+export function /*target*/original() { return "ok"; }
+// @Filename: /home/src/workspaces/project/index.ts
+import { original as /*aliasedImport*/renamed } from "pkg";
+renamed();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "aliasedImport")
+}
+
+func TestGoToSourceReExportAliasWithPrecedingExports(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// Re-export with alias: export { original as alias } from "pkg"
+	// should navigate to the original export, not the first statement.
+	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 unrelated(): void;
+export declare function original(): string;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+export function unrelated() {}
+export function /*target*/original() { return "ok"; }
+// @Filename: /home/src/workspaces/project/reexport.ts
+export { original as /*reExportAlias*/renamed } from "pkg";`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "reExportAlias")
+}