referenceerror process is not defined react vite

ReferenceError Process is not defined React Vite

If you are facing a "ReferenceError: Process is not defined" error in your React Vite app, it means that the Vite build process is not able to find the Process object. The Process object is a part of Node.js and is used to provide information about the current process running on the system.

This error usually occurs when you are trying to use the Process object in the browser environment. This is because the Process object is only available in the Node.js environment and not in the browser environment.

Solution 1: Use process.env instead of Process

To fix this error, you can replace all references to the Process object with process.env. The process.env object provides access to environment variables and is available in both Node.js and browser environments.

// Before
const pid =;

// After
const pid =;

Solution 2: Use a polyfill

If you absolutely need to use the Process object in the browser environment, you can use a polyfill to provide the functionality. A polyfill is a piece of code that provides the functionality of a feature that is not available in the current environment.

One popular polyfill for the Process object is the "process" package. You can install it using npm:

npm install process

After installing the package, you can import it in your code:

import process from 'process';

const pid =;

By following these solutions, you should be able to fix the "ReferenceError: Process is not defined" error in your React Vite app.

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