vendor tsgo

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

@@ -0,0 +1,36 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestGoToImplementationNoCrashMultiSourceDts(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// combined.d.ts has a source map with two sources: a.ts and b.ts.
+	// The method declaration on line 1 (col 4-end) straddles a source-map boundary:
+	//   - col 4 ("method") maps to a.ts
+	//   - col 11 onwards maps to b.ts
+	const content = `
+// @Filename: /a.ts
+export {};
+// @Filename: /b.ts
+export {};
+// @Filename: /combined.d.ts
+export declare class Bar {
+    method(): void;
+}
+//# sourceMappingURL=combined.d.ts.map
+// @Filename: /combined.d.ts.map
+{"version":3,"file":"combined.d.ts","sourceRoot":"","sources":["a.ts","b.ts"],"names":[],"mappings":";IAAA,OCAA;AAAA"}
+// @Filename: /user.ts
+import { Bar } from './combined';
+declare const bar: Bar;
+bar./*impl*/method();`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineGoToImplementation(t, "impl")
+}