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!');
}

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.

Check if the code is running on macOS.

Check if the code is running on Windows.

Check if the code is running on Linux.

Check if the code is running on iOS.

Check if the code is running on Android.

• is-in-ci - Check if the process is running in a CI environment
• is64bit - Check if the operating system CPU architecture is 64-bit or 32-bit
• is - Type check values