報錯如下：
compiler.hooks.done.tap('done', async stats => {
^^^^^
SyntaxError: missing ) after argument list
at Object.exports.runInThisContext (vm.js:76:16)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/Users/lori/qunar/mock-test2/node_modules/react-scripts/scripts/start.js:45:5)
at Module._compile (module.js:570:32)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `react-scripts start`
npm ERR! Exit status 1
Compiled with warnings.
是node版本的問題，當前版本低不支持ES6語法，可以用nvm list查看一下當前版本，我把版本從6.9.5換到11就OK了。