writable.destroy([error])

• error <Error> 可选，与 'error' 事件一起触发的错误。
• 返回: <this>

销毁流 可选地触发 'error' 事件，并且触发 'close' 事件（除非 emitClose 设置为 false）。 在此调用之后，则可写流已结束，随后对 write() 或 end() 的调用将导致 ERR_STREAM_DESTROYED 错误。 这是销毁流的破坏性和直接的方式。 先前对 write() 的调用可能没有排空，并且可能触发 ERR_STREAM_DESTROYED 错误。 如果数据应该在关闭之前刷新，或者在销毁流之前等待 'drain' 事件，则使用 end() 而不是销毁。

const { Writable } = require('stream');

const myStream = new Writable();

const fooErr = new Error('foo error');
myStream.destroy(fooErr);
myStream.on('error', (fooErr) => console.error(fooErr.message)); // foo error

const { Writable } = require('stream');

const myStream = new Writable();

myStream.destroy();
myStream.on('error', function wontHappen() {});

const { Writable } = require('stream');

const myStream = new Writable();
myStream.destroy();

myStream.write('foo', (error) => console.error(error.code));
// ERR_STREAM_DESTROYED

一旦 destroy() 被调用，任何进一步的调用都将是空操作，除了来自 _destroy() 的其他错误可能不会作为 'error' 触发。

实现者不应覆盖此方法，而应实现 writable._destroy()。

• error <Error> Optional, an error to emit with 'error' event.
• Returns: <this>

Destroy the stream. Optionally emit an 'error' event, and emit a 'close' event (unless emitClose is set to false). After this call, the writable stream has ended and subsequent calls to write() or end() will result in an ERR_STREAM_DESTROYED error. This is a destructive and immediate way to destroy a stream. Previous calls to write() may not have drained, and may trigger an ERR_STREAM_DESTROYED error. Use end() instead of destroy if data should flush before close, or wait for the 'drain' event before destroying the stream.

const { Writable } = require('stream');

const myStream = new Writable();

const fooErr = new Error('foo error');
myStream.destroy(fooErr);
myStream.on('error', (fooErr) => console.error(fooErr.message)); // foo error

const { Writable } = require('stream');

const myStream = new Writable();

myStream.destroy();
myStream.on('error', function wontHappen() {});

const { Writable } = require('stream');

const myStream = new Writable();
myStream.destroy();

myStream.write('foo', (error) => console.error(error.code));
// ERR_STREAM_DESTROYED

Once destroy() has been called any further calls will be a no-op and no further errors except from _destroy() may be emitted as 'error'.

Implementors should not override this method, but instead implement writable._destroy().