vendor tsgo

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

@@ -0,0 +1,48 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToSourceDefinitionEmptyJsFile(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When the resolved .js file is empty (0 statements), source definition
+	// navigates to the SourceFile node itself.
+	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 foo(): void;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+// @Filename: /home/src/workspaces/project/index.ts
+import { foo } from /*specifier*/"pkg";
+foo();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "specifier")
+}
+
+func TestGoToSourceDefaultImportNoDefaultInJs(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When a default import resolves to a .js file that has no default export,
+	// source definition falls back to the first statement of the file.
+	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 default function create(): void;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+/*targetEntry*/function internalCreate() { return {}; }
+module.exports = { create: internalCreate };
+// @Filename: /home/src/workspaces/project/index.ts
+import /*importDefault*/create from "pkg";
+create();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "importDefault")
+}