node:readable stream

readable.js

const { Readable } = require("stream");
const { firstName, lastName } = require("faker/locale/en").name;
const { createWriteStream } = require("fs");

class randomName extends Readable {
    constructor(options) {
        super(options);
        this.count = 1e3;
    }
    _read() {
        if (this.count > 0) {
            this.push(`${firstName()} ${lastName()} \n`);
            this.count--;
        }
    }
}
const foo = new randomName({ objectMode: true });
const bar = createWriteStream("demo.txt");
foo.pipe(bar);