vercel build error TypeError: f.charCodeAt is not a function

[sahinme]

Hi ! I have create-next-app and in production get error like this : TypeError: f.charCodeAt is not a function. I using vercel host.
It is working fine in localhost only get error while deploying. Pls help !

[alanhoskins]

I've been hitting the same error today with Vercel. It was working fine locally until I blew away my node_modules and reinstalled. Now even locally it won't build.

[sahinme]

This build error appeared after I added txt file to public folder. Then i removed changes but it still dont build

[alanhoskins]

Appears to be some package dependencies that are causing issues. After some digging I found adding

  "resolutions": {
    "cssnano-preset-simple": "1.1.1",
    "webpack": "4.43"
  }

to my package dependencies, it works. You may not need the webpack one, but I did for Amplify.

Hope it helps to temp fix things for you.

Amplify issue
cssnano issue

[sahinme]

Thank you @alanhoskins ! I solved problem. I was added yesterday dotenv-webpack module. I dont use it and removed. Now it is working fine.

[Timer]

Duplicate of #15026