filehandle.readableWebStream([options])

• options <Object>

  • autoClose <boolean> 当为 true 时，当流关闭时，<FileHandle> 也会关闭。默认值：false

    ¥autoClose <boolean> When true, causes the <FileHandle> to be closed when the stream is closed. Default: false

• 返回：<ReadableStream>

  ¥Returns: <ReadableStream>

返回一个面向字节的 ReadableStream，可用于读取文件的内容。

¥Returns a byte-oriented ReadableStream that may be used to read the file's contents.

如果多次调用此方法或在 FileHandle 关闭中或关闭后调用该方法会报错。

¥An error will be thrown if this method is called more than once or is called after the FileHandle is closed or closing.

import {
  open,
} from 'node:fs/promises';

const file = await open('./some/file/to/read');

for await (const chunk of file.readableWebStream())
  console.log(chunk);

await file.close();const {
  open,
} = require('node:fs/promises');

(async () => {
  const file = await open('./some/file/to/read');

  for await (const chunk of file.readableWebStream())
    console.log(chunk);

  await file.close();
})();拷贝

虽然 ReadableStream 会读完文件，但不会自动关闭 FileHandle。用户代码仍然必须调用 fileHandle.close() 方法。

¥While the ReadableStream will read the file to completion, it will not close the FileHandle automatically. User code must still call the fileHandle.close() method.