Function boolErr

test/syntax-check.test.ts:34–37

(n: TSNodeLike)

  } as TSNodeLike;
}
function boolErr(n: TSNodeLike): boolean {
  const h = (n as any).hasError;
  return typeof h === 'function' ? h() : !!h;
}

console.log('— tree walker (mock trees) —');
{