示例 ReadableStream

【Example ReadableStream】

这个例子创建了一个简单的 ReadableStream，每秒永远推送一次当前的 performance.now() 时间戳。使用异步可迭代对象从流中读取数据。

【This example creates a simple ReadableStream that pushes the current performance.now() timestamp once every second forever. An async iterable is used to read the data from the stream.】

import {
  ReadableStream,
} from 'node:stream/web';

import {
  setInterval as every,
} from 'node:timers/promises';

import {
  performance,
} from 'node:perf_hooks';

const SECOND = 1000;

const stream = new ReadableStream({
  async start(controller) {
    for await (const _ of every(SECOND))
      controller.enqueue(performance.now());
  },
});

for await (const value of stream)
  console.log(value);const {
  ReadableStream,
} = require('node:stream/web');

const {
  setInterval: every,
} = require('node:timers/promises');

const {
  performance,
} = require('node:perf_hooks');

const SECOND = 1000;

const stream = new ReadableStream({
  async start(controller) {
    for await (const _ of every(SECOND))
      controller.enqueue(performance.now());
  },
});

(async () => {
  for await (const value of stream)
    console.log(value);
})();拷贝