RN: Mac 配置 ES6 简易开发环境

ES6
-lib
-src

npm init

cat package.json

{
  "name": "es6tutorials",
  "version": "1.0.0",
  "description": "Tutorial",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [
    "es6",
    ".etc"
  ],
  "author": "mark.zhang",
  "license": "MIT"
}

npm install --save-dev babel-cli

npm install babel-cli -g

babel
babel-node
babel-doctor
babel-external-helpers

npm install babel-core --save

npm install babel-preset-es2015

touch .babelrc

{
    "presets": [
      "es2015",
    ],
    "plugins": []
}

function test()
{
    console.log(a);
    var a = 0;
}
test();
var a = [];
for (var i = 0; i < 10; i++) {
  var c = i;
  a[i] = function () {
    console.log(c);
  };
}
a[6](); // 9
var b = [];
for (var i=0; i<10; i++) {
    let c = i; //let 是 es6中的关键字
    b[i] = function() {
        console.log(c)
    };
}
b[6]();

babel src/tutorials.js

babel-node src/tutorials.js

babel -d lib/ src/

babel-node

babel-doctor

npm uninstall --global babel-cli