react-scripts: command not found after node-sass-chokidar installed

Note from maintainers: if you use npm@5.x, please downgrade to npm@4.x because npm@5.x currently has major bugs causing this and other issues. npm i -g npm@4

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Is this a bug report?

Yes.

Can you reproduce the problem with npm 4.x?

Yes. same

Have you read the Troubleshooting section and searched the User Guide?

Yes

Environment

1. node -v: 6.10.2
2. npm -v: 5.0.4 / 4.6.1
3. yarn --version (if you use Yarn): null
4. npm ls react-scripts (if you haven’t ejected): No

Then, specify:

1. Operating system: macOS 10.12.5
2. Browser and version (if relevant): chrome version 60

Steps to Reproduce

1. install create-react-app globally
2. create my app & npm install
3. install node-sass-chokidar -D
4. edit ‘scripts’ part fllowing documentation
5. npm start

I tried remove node_modules , clear cache and reinstalled twice, it still happened.

And it works before I install node-sass-chokidar

here’s npm script:

"scripts": {
    "build-css": "node-sass-chokidar src/ -o src/",
    "watch-css": "npm run build-css && node-sass-chokidar src/ -o src/ --watch --recursive",
    "start-js": "react-scripts start",
    "start": "npm-run-all -p watch-css start-js",
    "build": "npm run build-css && react-scripts build",
    "test": "node scripts/test.js --env=jsdom"
  },

Expected Behavior

App is running.

Actual Behavior

Threw this error

Reproducible Demo

none.

[gaearon]

npm 5.x has more than 50 known issues. Please downgrade to npm 4.x until they’re solved.

https://github.com/npm/npm/issues/16991

npm i -g npm@4

[gaearon]

I’ll lock this because it is completely out of our control. npm can help you with this.

Please file issues with them: https://github.com/npm/npm/issues

Thanks!