How to use babel in WebStorm ES6
This time I will show you how to use babel in WebStorm ES6. What are the precautions for using babel in WebStorm ES6? The following is a practical case, let's take a look.
1. Grammar support settings Preferences > Languages & Frameworks > 2. Babel 1. Global installationnpm install -g babel-cli
npm install --save-dev babel-cli
# 转码结果输出到标准输出 babel example.js # 转码结果写入一个文件 # --out-file 或 -o 参数指定输出文件 babel example.js --out-file compiled.js # 或者 babel example.js -o compiled.js # 整个目录转码 # --out-dir 或 -d 参数指定输出目录 babel src --out-dir lib # 或者 babel src -d lib # -s 参数生成source map文件 babel src -d lib -s
input.map(item => item + 1);
{ "name": "application-name", "version": "0.0.1"}npm install --save-dev babel-cli
config file .babelrc<span style="color:#000000;font-family:NSimsun;"></span>
.babelrc<span style="font-family:NSimsun;"></span>, which is stored in the root directory of the project. The first step in using Babel is to configure this file.
{ "presets": [], "plugins": []}presets<span style="font-family:NSimsun;"></span> field sets the transcoding rules. The following official rule sets are provided. You can install them as needed.
# ES2015转码规则 npm install --save-dev babel-preset-es2015 # react转码规则 npm install --save-dev babel-preset-react # ES7不同阶段语法提案的转码规则（共有4个阶段），选装一个 npm install --save-dev babel-preset-stage-0 npm install --save-dev babel-preset-stage-1 npm install --save-dev babel-preset-stage-2 npm install --save-dev babel-preset-stage-3
UpdateConfiguration file .babelrc
Save the corresponding rules to the configuration file.{
"presets": [
"es2015"
],
"plugins": []
}{
"name": "application-name",
"version": "0.0.1",
"devDependencies": {
"babel-cli": "^6.26.0"
},
"scripts": {
"build": "babel src -d lib"
}
}npm run build
JS converts the list into a tree structure
JS enables pictures to be dragged on the web page
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