Office Whisperer

'use strict'; const Transform = require('stream').Transform; class LastNewline extends Transform { constructor() { super(); this.lastByte = false; } _transform(chunk, encoding, done) { if (chunk.length) { this.lastByte = chunk[chunk.length - 1]; } this.push(chunk); done(); } _flush(done) { if (this.lastByte === 0x0a) { return done(); } if (this.lastByte === 0x0d) { this.push(Buffer.from('\n')); return done(); } this.push(Buffer.from('\r\n')); return done(); } } module.exports = LastNewline;