Check which JavaScript environment your code is running in at runtime

npm install environment

import {isBrowser, isNode} from 'environment';

if (isBrowser) {
	console.log('Running in a browser!');
}

if (isNode) {
	console.log('Running in Node.js!');
}

[!NOTE] Runtime checks should be used sparingly. Prefer conditional package exports and imports whenever possible.

Check if the code is running in a web browser environment.

Check if the code is running in a Node.js environment.

Check if the code is running in a Bun environment.

Check if the code is running in a Deno environment.

Check if the code is running in an Electron environment.

Check if the code is running in a jsdom environment.

Check if the code is running in a Web Worker environment, which could be either a dedicated worker, shared worker, or service worker.

Check if the code is running in a Dedicated Worker environment.

Check if the code is running in a Shared Worker environment.

Check if the code is running in a Service Worker environment.

• is - Type check values