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  • es6转码和package.json中的配置

    在线实时转换

    需要babel-register
    .babelrc中:

    {
      "presets": [
        "es2015"
      ]
    }
    
    

    项目中main.js配置:

    前提是安装对应的包

    require('babel-register')
    require('./src/app')
    
    

    自己写的要运行的为app.js,这样配置后会在运行main.js是自动转为es5并执行

    通过配置手动转换

    需要babel-cli

    安装babel后

    运行babel src -d dist
    src为自己写的es6目录文件,dist为转码后的es5文件,没有则创建
    运行node dist/app.js
    这样就可以以es5来运行自己的项目了

    关于package.json中的配置

    package.json:

    {
      "name": "edu",
      "version": "1.0.0",
      "description": "",
      "main": "app.js",
      "scripts": {
        "test": "echo "Error: no test specified" && exit 1",
        "dev": "node main.js",
        "build": "babel src -d dist",
        "prestart": "npm run build",
        "start": "node dist/app.js"
      },
      "keywords": [],
      "author": "",
      "license": "ISC",
      "dependencies": {
        "bootstrap": "^3.3.7",
        "echarts": "^3.4.0",
        "ejs": "^2.5.5",
        "express": "^4.14.1",
        "font-awesome": "^4.7.0",
        "jquery": "^3.1.1",
        "nprogress": "^0.2.0"
      },
      "devDependencies": {
        "babel-cli": "^6.22.2",
        "babel-preset-es2015": "^6.22.0",
        "babel-register": "^6.22.0"
      }
    }
    
    

    dependencies为项目依赖文件,上线必须要安装的

    devDependencies为开发阶段使用的工具,只在开发阶段使用

    对配置的解释

    "dev": "node main.js",
    运行node run dev=node main.js

    "build": "babel src -d dist",
    运行npm run build=babel src -d dist

        "prestart": "npm run build",
        "start": "node dist/app.js"
    

    运行npm startnpm run start=npm run build+node dist/app.js

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  • 原文地址:https://www.cnblogs.com/ygjzs/p/12230841.html
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