How to detect if script is running in browser or in Node.js? [duplicate]

Answer 1

There is an npm package just for this and it can be used both on client-side and server-side.

browser-or-node

You can use it in your code like this

import { isBrowser, isNode } from 'browser-or-node';

if (isBrowser) {
  // do browser only stuff
}

if (isNode) {
  // do node.js only stuff
}

Disclaimer: I am the author of this package :)