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How to fix regeneratorRuntime is not defined?

Hulya on June 16, 2021

I have ran into a problem, the error is regeneratorRuntime is not defined while working with React and Parcel bundler. The problem appeared aft...
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Felipe Nascimento de Moura •

wow! It, weirdly enough...worked!
Usually I too waste HOURS looking for how to fix this rocket science configs.
I have components that are lazy loaded with all their dependencies, but when a component imported something from node_modules, I had this error.
I'm using next.js.
I just installed the dependency regenerator-runtime and added import 'regenerator-runtime/runtime'; to the top of the root component that was lazy loaded and it, for my surprise, worked, as simple as that!
Thank you very much :)
Simple and effective.

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Ori A. •

Made an account just to say non of these or any single findable "fix" on the internet can fix this in late 2021,
again webpack and babel waste hours upon hours of dev time for their chronic incompatibly and version inconsistency.
I hate every hour I work in this industry.

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Arkadeep Nag •

then please leave to code

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Nikita Makhov •

Strange, worked for me.

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Yalon •

Thank you 🧡

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Subhajit Roy •

Thank you it solved my async/await issue 🙌🏼

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pyscho3 •

Thanks for saving my keyboard from getting shattered, guy.
stick merge

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bleedeleventh •

Thank you so much Hulya, it worked for me.

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execptionerror •

[Already Solved] Babel ReferenceError: regeneratorRuntime is not defined

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Luís Eduardo •

Thanks, work for me 😍

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Moussack •

ty my man this works, i use the simple solution 3

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aderchox •

This is no more recommended. Use this instead:

npm i -D @babel/plugin-transform-runtime
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...and add in .babelrc:

  "plugins": [
    ["@babel/transform-runtime", {
      "regenerator": true
    }]
  ]
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itzsrikanth •

I had babel-polyfill in couple of files in codebase but was not able to understand since I was new. In those files it had just this statement to fix issue:

require('babel-polyfill')
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or

import 'babel-polyfill'
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Thanks for this article..!

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VitoMedlej •

thanks man u saved my keyboard from being smashed

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Hulya •

Haha, good for the keyboard 😃

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Leo Reid •

I tried adding the import to _app.js, but it still doesn't work. This error occurs while I use NextJS 13 and react-speech-recognition.

If you think you can help: here's the post on stackoverflow and on reddit

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Pedro Lucas Copatti •

I created an account just to thank you!
thank you so much!
Saved me.

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Hulya •

Wow, thanks Pedro 👍🏻

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Akanksha Gahalot •

Thank you soooo much!!! You saved me!

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Hulya •

Happy to help 👍

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James Jordan •

Very helpful - using this and babel in NextJS got me running with react-table. Thanks!

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smartdriver321 •

thanks bruh, you saved my time

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Prosper Nglazi •

Hi, now am getting a 'process not defined' error because in my file am using 'process.env.API_URL' to create a base url to the server. How can I solve this? Thanks

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Alfredo •

Thanks for sharing. This is still working!

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kirsten_the_dev •

This answer helped me => stackoverflow.com/questions/654870...