babel 기초

npm install -g babel babel-cli

npm init
npm install --save-dev babel-preset-es2015

{
  "presets": ["es2015"]
}

babel src/sample.js -o dist/build.js

const ES6 = 'ECMAScript2015';
console.log(ES6);

"use strict";

var log = function log() {
  console.log("ECMAScript2015");
};

https://mae.chab.in/archives/2547