Next.js dev server stuck on "Compiling...' after version 3.3.1

[Soberia]

I can't get the dev server up on version 3.4.0 or later which has fallback support.
I have Next.js version 15.0.0-rc.0 and React 19.0.0-rc-2d2cc042-20240809 and run the dev server with TurboPack (next dev --turbo)

[0xa3k5]

Thank you for reporting @Soberia I'm running a similar setup in tokenicons.io and it's running fine. Could you create a reproducable repo so I can see the issue?

[0xa3k5]

also, do you see any errors? It's very interesting that the fallback prop has anything to do with it

[Soberia]

unfortunately, there are no errors.

Steps to reproduce:

• run npx create-next-app@rc --empty --turbo
• run npm install @web3icons/react@3.6.1
• edit src/app/page.tsx to the following:

"use client"

import {TokenIcon} from '@web3icons/react'

export default function Home() {
  return <TokenIcon symbol="btc" size="1rem" />
}

• run the dev server

> xxx@0.1.0 dev
> next dev --turbo

  ▲ Next.js 15.0.0-rc.0 (turbo)
  - Local:        http://localhost:3000

 ✓ Starting...
 ✓ Ready in 2.8s
 ○ Compiling / ...

[0xa3k5]

when I did that, it is working for me @Soberia . I've realized the compiling takes a bit of time tho, I imagine it has something to do with internals of nextjs@15 which I can not optimize for at this time.

[Soberia]

It's weird, I tried on two different systems (Ubuntu 24.04 and WSL with node 20). both with the same result. server won't finish the compiling no matter how much time it takes.

I switched back to version 3.3.1, feel free to close the issue.

[0xa3k5]

i will keep digging, will tag you if i can figure it out

[tanvir0604]

Same problem here. Its taking too much time to compile with this library.