Babel

# mkdir babel_test
# cd babel_test && npm init

package name: (babel_test)
version: (1.0.0)
description:
entry point: (index.js)
test command: echo "Error: no test specified" && exit 1
git repository:
keywords:
author:
license: (ISC)
About to write to D:\JS\nodejs\babel_test\package.json:

{
  "name": "babel_test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}

Is this ok? (yes)

Instalacja babel

# npm install --save-dev babel-cli

Podmienić w package.json właściwość scripts:

"scripts": {
    "build": "babel src -d lib"
}