另外，这俩问题是我在mobx中应用ES7装璜器语法用到的，用一般的ES6语法是不会碰到这样的问题，嫌麻烦也能够不必装璜器语法，奈何我对这种看上去像Spring正文的语法垂涎已久。

bug1

Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option in your 'tsconfig' or 'jsconfig' to remove this warning.ts(1219)

问题出在IDE不意识这个语法 以vscode为例 须要在setting中搜“experimentalDecorators”而后勾选上

bug2

Parsing error: This experimental syntax requires enabling one of the following parser plugin(s): "decorators", "decorators-legacy". (22:4)eslint

问题出在我的项目自身不意识这个语法（以后这个语法还在试验阶段 babel还没有正式公布），这个解决起来略微有点麻烦，翻了很久stackoverflow和github issue，答复都是支支吾吾 遮遮掩掩，故作此篇，以飨前人。

step1:

npm i @babel/core @babel/plugin-proposal-decorators @babel/preset-env

step2:
我的项目根目录下创立.babelrc

{  "presets": ["@babel/preset-env"],  "plugins": [["@babel/plugin-proposal-decorators", { "legacy": true }]]}

step3:
我的项目根目录下创立config-overrides.js

const path = require('path')const { override, addDecoratorsLegacy } = require('customize-cra')function resolve(dir) { return path.join(__dirname, dir) }const customize = () => (config, env) => {    config.resolve.alias['@'] = resolve('src')    if (env === 'production') { config.externals = { 'react': 'React', 'react-dom': 'ReactDOM' } }    return config}; module.exports = override(addDecoratorsLegacy(), customize())

step4:
npm i customize-cra react-app-rewired

step5:
批改package.json

  "scripts": {    "start": "react-app-rewired start",    "build": "react-app-rewired build",    "test": "react-app-rewired test",    "eject": "react-app-rewired eject"  },

而后重启服务器 再次npm start

bug3

报错 Plugin "react" was conflicted between "package.json ...
而后关上package.json ctrl/command + s 就好啦

（最初这里vscode如果出问题，，重启服务器不论用，能够尝试换了一个IDE 比方webstorm）

happy hacking~