Add additional test case for JSDoc type assertion with comment

Co-authored-by: jakebailey <[email protected]>

Author: Copilot

internal/astnav/tokens_test.go

@@ -70,6 +70,25 @@ func TestGetTokenAtPosition(t *testing.T) {
 		}
 	})
 
+	t.Run("JSDoc type assertion with comment", func(t *testing.T) {
+		t.Parallel()
+		// Exact code from the issue report
+		fileText := `function foo(x) {
+    const s = /**@type {string}*/(x)  // Go-to-definition on x causes panic
+}`
+		file := parser.ParseSourceFile(ast.SourceFileParseOptions{
+			FileName: "/test.js",
+			Path:     "/test.js",
+		}, fileText, core.ScriptKindJS)
+		
+		// Find position of 'x' in the type assertion
+		xPos := 52 // Position of 'x' in (x)
+		
+		// This should not panic
+		token := astnav.GetTouchingPropertyName(file, xPos)
+		assert.Assert(t, token != nil, "Expected to get a token")
+	})
+
 	t.Run("pointer equality", func(t *testing.T) {
 		t.Parallel()
 		fileText := `