rl[Symbol.asyncIterator]()

• 返回：<AsyncIterator>

  ¥Returns: <AsyncIterator>

创建 AsyncIterator 对象，该对象遍历输入流中的每一行作为字符串。此方法允许通过 for await...of 循环异步迭代 InterfaceConstructor 对象。

¥Create an AsyncIterator object that iterates through each line in the input stream as a string. This method allows asynchronous iteration of InterfaceConstructor objects through for await...of loops.

输入流中的错误不会被转发。

¥Errors in the input stream are not forwarded.

如果循环以 break、throw 或 return 终止，则将调用 rl.close()。换句话说，迭代 InterfaceConstructor 将始终完全消费输入流。

¥If the loop is terminated with break, throw, or return, rl.close() will be called. In other words, iterating over a InterfaceConstructor will always consume the input stream fully.

性能无法与传统的 'line' 事件 API 相提并论。对于性能敏感的应用，请改用 'line'。

¥Performance is not on par with the traditional 'line' event API. Use 'line' instead for performance-sensitive applications.

async function processLineByLine() {
  const rl = readline.createInterface({
    // ...
  });

  for await (const line of rl) {
    // Each line in the readline input will be successively available here as
    // `line`.
  }
} 拷贝

readline.createInterface() 将在调用后开始使用输入流。在接口创建和异步迭代之间进行异步操作可能会导致丢失行。

¥readline.createInterface() will start to consume the input stream once invoked. Having asynchronous operations between interface creation and asynchronous iteration may result in missed lines.