react 支持裝飾器配置

1、安裝
	cnpm -D install react-app-rewired customize-cra 
	cnpm -D install @babel/plugin-proposal-decorators
	
2、與src同級創建config-overrides.js文件

	const { override,addDecoratorsLegacy } = require('customize-cra');

	module.exports = override(
		addDecoratorsLegacy()
	);

3、修改package.json文件的'scripts'內容
    "start": "react-app-rewired start",
    "build": "react-app-rewired build",
    "test": "react-app-rewired test",

4、重啓