[reactjs] Error: Node Sass version 5.0.0 is incompatible with ^4.0.0

I've created a blank React project, using the command: npx create-react-app on npm v7.0.7 and Node v15.0.1

Installed:

• React v17.0.1,
• node-sass v5.0.0,

Then I tried to import blank .scss file to App component:

App.js

import './App.scss'

function App() {
  return (
    <div className="App">
      App
    </div>
  );
}

export default App;

Throw an Error:

Failed to compile.

./src/App.scss (./node_modules/css-loader/dist/cjs.js??ref--5-oneOf-6-1!./node_modules/postcss-loader/src??postcss!./node_modules/resolve-url-loader??ref--5-oneOf-6-3!./node_modules/s
ass-loader/dist/cjs.js??ref--5-oneOf-6-4!./src/App.scss)
Error: Node Sass version 5.0.0 is incompatible with ^4.0.0.

package.json

{
  "name": "react-17-node-sass-5",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@testing-library/jest-dom": "^5.11.5",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "node-sass": "^5.0.0",
    "react": "^17.0.1",
    "react-dom": "^17.0.1",
    "react-scripts": "4.0.0",
    "web-vitals": "^0.2.4"
  },
 ...
 
  }
}

If the error is

Error: Node Sass version 5.0.0 is incompatible with ^4.0.0

Step1: stop the server

Step2: run commands are npm uninstall node-sass

Step3: check node-sass in package.json if node-sass is available in the file then again run Step2.

Step4: npm install [email protected] <=== run command

Step5: wait until the command successfully runs.

Step6: start-server using npm start

This error occurs when versions of NodeJS and Node Sass are not matched.

you can resolve your issue by doing as below:

- Step 1: Remove Nodejs from your computer

- Step 2: Reinstall Nodejs version 14.15.1.

- Step 3: Uninstall Node sass by run the command npm uninstall node-sass

- Step 4: Reinstall Node sass version 4.14.1 by run the command npm install [email protected]

After all steps, you can run command ng serve -o to run your application.

Node sass version 5.0.0 is incompatible with ^4.0.0.

If you happen to use CRA with default yarn package manager use the following. Worked for me.

yarn remove node-sass 
yarn add [email protected]

The only one reason why you get some error like that, it's because your node version is not compatible with your node-sass version.

So, make sure to checkout the documentation at here: https://www.npmjs.com/package/node-sass

Or this image below will be help you, what the node version can use the node-sass version.

For an example, if you're using node version 12 on your windows ("maybe"), then you should have to install the node-sass version 4.12.

npm install [email protected]

Yeah, like that. So now you only need to install the node-sass version recommended by the node-sass team with the nodes installed on your computer.

Small update: Incase if you get below error in regard to node-sass follow the steps given below.

code EPERM
npm ERR! syscall unlink

steps to solve the issue:

1. close visual studio
2. manually remove .node-sass.DELETE from node_modules
3. open visual studio
4. npm cache verify
5. npm install [email protected]

Uninstall node-sass

npm uninstall node-sass

use sass by:

npm install -g sass
npm install --save-dev sass

It worked for me after adding particular version of node-sass package ([email protected])

This is version problem, install the right dependant version

npm uninstall node-sass
npm install [email protected]