使用了

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

后报错信息如下:

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'react-scripts/package.json'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.resolve (internal/modules/cjs/helpers.js:33:19)
    at Object.<anonymous> (C:\...\node_modules\react-app-rewired\scripts\utils\paths.js:27:11)
    at Module._compile (internal/modules/cjs/loader.js:776:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (internal/modules/cjs/helpers.js:25:18)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `react-app-rewired start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\...AppData\Roaming\npm-cache\_logs\2019-11-02T08_08_28_567Z-debug.log

报错第一行就能看到如何解决:

npm install react-scripts

然后重新启动

npm start

即可

01-03 09:42