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babel-first's Introduction

babel-first

babel-cli解析ES6

  • cnpm install -g --save-dev babel-cli
  • cnpm install babel-preset-es2015 --save-dev
  • 配置babel解析ES6为ES5,需要一个配置文件.babelrc
{
  "presets":["es2015"],
  "plugins": []
}

babel-cli命令

  • babel script.js 按照规则编译,输出到控制台
  • babel script.js --out-file script.compiled.js编译输出到script.compiled.js,参数简写-o
  • babel script.js --watch --out-file script-compiled.js实时编译并输出到文件
  • babel src --out-dir libsrc目录js文件编译到lib,参数简写-d

package.js

{
  "script":{
    "build":"babel src -d lib"
  }
}
npm run build

babel-first's People

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