node-compression-test

// npm install brotli gzip-size
// useage: node app.js path/to/file.txt

var brotli = require('brotli');
var gzipSize = require('gzip-size');

var fs = require('fs');
var path = require('path');

var filePath = path.join(process.cwd(), process.argv[2]);

var original = fs.readFileSync(filePath);

console.log('Original size:', size(Buffer.byteLength(original, 'utf8')));
console.log('G-Zipped size:', size(gzipSize.sync(original)));
console.log('Brotlied size:', size(Buffer.byteLength(brotli.compress(original), 'utf8')));

function size(byteCount) {
  return Math.round(10*byteCount/1024)/10+' kB';
}