vendor tsgo

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

@@ -0,0 +1,42 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+// TestAutoImportSymlinkedMonorepo verifies that when a monorepo package is symlinked
+// into node_modules and imported, auto-imports don't show duplicates.
+//
+// Scenario:
+//   - project-a imports "project-b" via a symlink in node_modules
+//   - project-b's source files are at /packages/project-b but symlinked to
+//     /packages/project-a/node_modules/project-b
+//   - The program contains project-b files via realpath, AND the symlink exists in node_modules
+//   - We should NOT see duplicate auto-imports for project-b exports
+func TestAutoImportSymlinkedMonorepo(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `// @Filename: /packages/project-b/package.json
+{ "name": "project-b", "version": "1.0.0", "main": "index.js", "types": "index.d.ts" }
+// @Filename: /packages/project-b/index.d.ts
+export declare const projectBValue: number;
+export declare function projectBFunction(): string;
+// @Filename: /packages/project-a/tsconfig.json
+{ "compilerOptions": { "module": "commonjs", "strict": true } }
+// @Filename: /packages/project-a/package.json
+{ "name": "project-a", "dependencies": { "project-b": "*" } }
+// @Filename: /packages/project-a/index.ts
+import { projectBValue } from "project-b";
+console.log(projectBValue);
+projectBFunc/**/
+// @link: /packages/project-b -> /packages/project-a/node_modules/project-b`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+
+	f.GoToMarker(t, "")
+	// This should show projectBFunction once, not twice
+	f.BaselineAutoImportsCompletions(t, []string{""})
+}