babel-generator-benchmark

babel-generator-benchmark.js

var babylon = require('babylon');
var babelGenerator = require('babel-generator');

var code = require('fs').readFileSync('./node_modules/jquery/dist/jquery.js', 'utf-8');
var ts, ast, results;

// babylon
ts = +new Date();
ast = babylon.parse(code);
console.log('babylon', +new Date() - ts);

// babel
ts = +new Date();
babelGenerator.default(ast, {}, '');
console.log('babel generator (cold)', +new Date() - ts);

ts = +new Date();
babelGenerator.default(ast, {}, '');
console.log('babel generator (warm 1)', +new Date() - ts);

var total = 0
for (var i = 100; i > 0; i--) {
  ts = +new Date();
  babelGenerator.default(ast, {}, '');
  total += (+new Date() - ts);
}
console.log('babel generator (warm avg)', total / 100);

FYI, i symlinked in the directories for requiring