issue with node v22.2.0

[jachsu]

The issue:
Running yarn build gives
▲ Next.js 14.0.3

(node:86224) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)

SuccessCallbackError {
error: SyntaxError: Unexpected identifier 'assert'
at compileSourceTextModule (node:internal/modules/esm/utils:337:16)
at ModuleLoader.moduleStrategy (node:internal/modules/esm/translators:163:18)
at callTranslator (node:internal/modules/esm/loader:430:14)
at ModuleLoader.moduleProvider (node:internal/modules/esm/loader:436:30)
at ModuleJob._link (node:internal/modules/esm/module_job:106:19),
_tag: 'SuccessCallbackError',
toString: [Function (anonymous)],
[Symbol()]: {
error: SyntaxError: Unexpected identifier 'assert'
at compileSourceTextModule (node:internal/modules/esm/utils:337:16)
at ModuleLoader.moduleStrategy (node:internal/modules/esm/translators:163:18)
at callTranslator (node:internal/modules/esm/loader:430:14)
at ModuleLoader.moduleProvider (node:internal/modules/esm/loader:436:30)
at ModuleJob._link (node:internal/modules/esm/module_job:106:19)
},
[Symbol()]: [ 'error' ]
}
Creating an optimized production build .%

After reinstalling the node@18, the issue get solved and everything works fine.

[timlrx]

Unfortunately this seems to be an issue with one of the dependencies of Eslint. See the following posts for more context - ajv-validator/ajv#2343 and garycourt/uri-js#95. You can use node 18 / 20 or override uri-js as suggested in the other posts.

I will update the dev dependencies when the underlying packages are updated.

[whale4113]

It seems to be caused by the fact that assert is not supported in higher versions of Node.js. As the official documentation says: This feature was previously named "Import assertions", and using the assert keyword instead of with. Any uses in code of the prior assert keyword should be updated to use with instead. https://nodejs.org/docs/latest-v22.x/api/esm.html#import-attributes

[Saugatkafley]

This solved the issue

After reinstalling the node@18, the issue get solved and everything works fine.

[aminblm]

I can confirm @Saugatkafley, this worked for me too. Nasty bug got me walking around my whole blog posts database. Thank you for the fix.

[Isaac-Tait]

I am running into this error, but reinstalling node does not solve for me. This bug is driving me nuts 😡

SOLVED:

Step 1: Updated Node.js version in the Vercel settings to v20 (since 18 is being deprecated in early 2025)

Step 2: Added this to my package.json file:

  "engines": {
    "node": "^20.0.0"
  },

When I pushed the update to Vercel I finally stopped getting the assert error.

EDIT: For posterity vercel/vercel#12827