Edge Function unsupported module - which was working before

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1

Question

Hi team,

I am suddenly seeing the issue of the vercel deployment failing due to this error

Screenshot 2025-03-11 at 7 11 57 PM
Screenshot 2025-03-11 at 7 11 57 PM2372×298 45.5 KB

This was working just a week ago. I didn’t make any changes that could have affected any of the packages but now seeing this issue all the time. Also when I tried redeploying the past working build they also keep failing now

2

Hi @namangarg20, welcome to the Vercel Community!

Sorry that you’re facing this issue. Can you check your code and try to fix the package version in the package.json? Maybe a new version of that package is being installed and it doesn’t work with Edge Runtime.

3

For anyone having the same issue, the problem comes from exporting the config on the edge functions like this:

export const config = {
  runtime: 'edge',
  regions: ['iad1'],
  // maxDuratioin: 500,
};

export default async (req: Request) => {
...
}

For some reason vercel is throwing an error using that approach. So you should change it to this:

export const runtime = 'edge';

And create your endpoints the same way you do on Next.js:

export const POST = async (req: Request) => {
...
}