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[Solved] Uncaught ReferenceError: process is not defined

I am using iframe in my react project and Iframe cover full-page and give me the following error: Uncaught ReferenceError: process is not defined in ReactJS. We are going to Learn about All Possible Solutions So Lets Get Start with This Article.

How Uncaught ReferenceError: process is not defined Error Occurs?

I am using iframe in my react project and Iframe cover full-page and give me the following error:

Uncaught ReferenceError: process is not defined Error

So here I am writing all the possible solutions that I have tried to resolve this error.

How To Solve Uncaught ReferenceError: process is not defined Error?

  1. How To Solve Uncaught ReferenceError: process is not defined Error?

    To Solve Uncaught ReferenceError: process is not defined Error You just need to install react-error-overlay. But Make Sure that package react-error-overlay is not compatible with react-scripts v4. Run this command to install react-error-overlay: npm i -D [email protected] Now, Your error must be solved. Thank You.

  2. Uncaught ReferenceError: process is not defined

    To Solve Uncaught ReferenceError: process is not defined Error All You Need to do is Just update your react-scripts to v5. Just run this command: npm install –save [email protected] OR npm install [email protected] And Now, your error should be fixed.

Solution 1: Upgrade react-scripts v5

All You Need to do is Just update your react-scripts to v5. Just run this command.

npm install --save [email protected]

OR

npm install [email protected]

And Now, your error should be fixed. But In some cases, if Upgrading react-scripts is not working then Use our Second solution.

Solution 2: Install react-error-overlay

If Solution 1 Now Worked then You just need to install react-error-overlay. But Make Sure that package react-error-overlay is not compatible with react-scripts v4. Run this command to install react-error-overlay.

For NPM users

npm i -D [email protected]

For yarn Users

yarn add -D [email protected]

Now, Your error must be solved. Thank You.

Solution 3: Add react-error-overlay in package.json

The workaround you can also add react-error-overlay as resolutions in your package.json. First of all, Open Your package.json and add the following lines.

"resolutions": {
    "react-error-overlay": "6.0.9"
},

"scripts":{
    .
    .
    .
    "preinstall": "npx npm-force-resolutions",
},

"devDependencies":{
    .
    .
    .
    "react-error-overlay": "6.0.9",
}

And then run npm install and now, your error must be solved.

Summary

It’s all About this error. Hope We solved Your error. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you?

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