如何克隆 NodeJS 流？

Question

我需要以某种方式在 nodeJS 中克隆一个 readstream。也就是说，如果我有一个 readStream 我需要它的两个副本 stream1，stream2。我可以在哪里单独阅读流 stream1 和 stream2。据我所知，即使我尝试将原始 readStream 传输到 stream1，stream2 我也无法单独使用它们中的每一个

Answer 1

我在 npmjs 包文档中找到了这个文档

const fs = require("fs");
const ReadableStreamClone = require("readable-stream-clone");

const readStream = fs.createReadStream('text.txt');

const readStream1 = new ReadableStreamClone(readStream);
const readStream2 = new ReadableStreamClone(readStream);

const writeStream1 = fs.createWriteStream('sample1.txt');
const writeStream2 = fs.createWriteStream('sample2.txt');

readStream1.pipe(writeStream1)
readStream2.pipe(writeStream2)

尝试这些代码行可能对您有所帮助

如何克隆 NodeJS 流？

How to clone a NodeJS stream?

javascript

chunks

node.js

node-streams