filehandle.readableWebStream([options])

• options <Object>
  • autoClose <boolean> 当为 true 时，会在流关闭时关闭 <FileHandle>。默认值： false
• 返回：<ReadableStream>

返回一个面向字节的 ReadableStream，可用于读取文件内容。

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

如果此方法被调用超过一次，或者在 FileHandle 已关闭或正在关闭之后调用，将会抛出错误。

【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 会读取文件直到完成，但它不会自动关闭 FileHandle。除非将 autoClose 选项设置为 true，否则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 unless the autoClose option is set to true.】