[BUG] Class extends value undefined is not a constructor or null

[kasparsiricenko]

[BUG] Class extends value undefined is not a constructor or null

[cyberalien]

That's a known issue with Next. Version 4 of component is old, it was designed many years ago and based on classes. Next does not support class based components.

There are several solutions:

• Update to version 5. You can install it by installing @iconify/react@next
• Use web component @iconify-icon/react
• Wrap version 4 in client only file.

[kasparsiricenko]

Thanks for pointing out these solutions. Maybe we can add this information to the documentation to help others facing the same issue.

[cyberalien]

Forgot to close this issue.

Version 5 has been published as stable, so installing @iconify/react will install new version that works with Next.js (sort of... see icon component docs)