Solve - Cannot find module 'rxjs-compat/Observable' error

Solve - Cannot find module 'rxjs-compat/Observable' error #

To solve the error "Cannot find module 'rxjs-compat/Observable'", make sure to install the package by opening your terminal in your project's root directory and running the following command: npm i rxjs and restart your IDE and development server.

Open your terminal in your project's root directory (where your package.json file is located) and run the following command:

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npm install rxjs

Make sure you are importing directly from the rxjs package and NOT from rxjs-compat.

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import {range, Observable} from 'rxjs';
import {map, filter} from 'rxjs/operators';

range(1, 50)
  .pipe(
    filter(x => x % 2 === 1),
    map(x => x + x),
  )
  .subscribe(x => console.log(x));

const observable = new Observable(subscriber => {
  subscriber.next(1);
  subscriber.next(2);
  subscriber.next(3);
  setTimeout(() => {
    subscriber.next(4);
    subscriber.complete();
  }, 1000);
});

You can import any operator you need from rxjs/operators.

If the error is not resolved, try to delete your node_modules and package-lock.json (not package.json) files, re-run npm install and restart your IDE.

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# 👇️ delete node_modules and package-lock.json
rm -rf node_modules
rm -f package-lock.json

# 👇️ clean npm cache
npm cache clean --force

npm install

If you still get the error, try to update the versions of your NPM packages by running the following command:

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npm update

If you're still getting the "Cannot find module 'rxjs-compat/Observable'" error, open your package.json file and make sure it contains the rxjs package in the dependencies object.

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{
  // ... rest
  "dependencies": {
    "rxjs": "^7.5.5",
  }
}

You can try to manually add the line and re-run npm install.

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npm install

Or install the latest version of the package:

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npm install rxjs@latest

The rxjs module should NOT be globally installed or be in your project's devDependencies, it should be in the dependencies object in your package.json file.

If you open your IDE in a different directory, e.g. one directory up, the error is caused.