vendor tsgo

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

@@ -0,0 +1,55 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToSourceAliasedImportAtUsageSite(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When the cursor is on a usage of an aliased import (not on the import
+	// specifier itself), the module specifier is discovered via
+	// findImportForName, and the original export name is passed as
+	// additionalNames so that the .js file is searched for the correct
+	// declaration. Without additionalNames, only the alias name would be
+	// searched, which does not exist in the .js 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 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 renamed } from "pkg";
+renamed/*usage*/();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "usage")
+}
+
+func TestGoToSourceAliasedImportAtUsageSiteNamespaceImport(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// When an aliased namespace import (import * as ns) is used at a property
+	// access site (ns.foo), the root identifier's import is discovered and the
+	// module specifier is used to resolve the property in the .js 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 declare function helper(): string;
+// @Filename: /home/src/workspaces/project/node_modules/pkg/index.js
+export function /*target*/helper() { return "ok"; }
+// @Filename: /home/src/workspaces/project/index.ts
+import * as ns from "pkg";
+ns./*usage*/helper();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToSourceDefinition(t, "usage")
+}