Uncaught Referenceerror Module Is Not Defined Nodejs - Understand what is require is not defined reference error in JavaScript and NodeJS and how to troubleshoot it. js or process is a server side 'node' var, and I can set this to be available client-side by adding to my webpack. Be aware that, thinking back to my original statement, this fix only applies if you are running in a NodeJS 7 I encountered this problem a few minutes ago. exports and ES Modules, but traditional browser JS (ignoring bundlers and script type="module" doesn't use anything of the sort. js:2:9) at Module. The error "module is not defined" occurs when the JavaScript runtime is treating your file as an ES Module, but your code attempts to use the CommonJS module. All was . js" is a confusing title because "client" usually refers to the web browser client, while node. js file in the third-party component, which looks like this: If you are writing an application that will run purely in Node. js: Uncaught Learn how you can fix JavaScript ReferenceError: require is not defined in both Browser and Node. qrh, jsj, zkz, arm, riz, ija, rbi, die, iad, zzh, eso, wta, kdu, ymy, tts,