vendor tsgo

tools/tsgo/internal/fourslash/tests/callHierarchyUnclosedTemplateExprNoCrash1_test.go

@@ -0,0 +1,29 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/typescript-go/internal/fourslash"
+	"github.com/microsoft/typescript-go/internal/testutil"
+)
+
+func TestCallHierarchyUnclosedTemplateExprNoCrash1(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	// Regression test for a crash in prepareCallHierarchy caused by parser error
+	// recovery: when a template expression is truncated mid-call (e.g. `${format`
+	// without closing `)`), the parser misinterprets the `class` keyword in
+	// subsequent HTML template literals as a TypeScript class declaration.
+	// The resulting anonymous ClassDeclaration (no name, no `default` modifier)
+	// previously caused a "Expected call hierarchy declaration to have a reference
+	// node" assertion failure.
+	const content = "// @Filename: /main.ts\n" +
+		"function updateBadge() {\n" +
+		"    const header = `<div class=\"sub\">${format`;\n" +
+		"    const badge = `<div /*1*/class=\"badge\">`;\n" +
+		"}"
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.GoToMarker(t, "1")
+	f.VerifyBaselineCallHierarchy(t)
+}