node-tailor/lib/streams/buffer-concat-stream.js

Tailor assembles a web page from multiple fragments

'use strict';

const stream = require('stream');

module.exports = class BufferConcatStream extends stream.Writable {
    constructor(callback) {
        super();
        this.data = [];
        this.on('finish', () => {
            callback(Buffer.concat(this.data));
        });
    }

    _write(chunk, encoding, done) {
        this.data.push(chunk);
        done(null, chunk);
    }
};