Next Build fails with start <= end assertion failed

[rishabh3112]

Link to the code that reproduces this issue

https://github.com/rishabh3112/next-bug-large-repo

To Reproduce

1. Clone repo: https://github.com/rishabh3112/next-bug-large-repo
2. npm install
3. npm run build

Current vs. Expected behavior

At my company, We have a fairly large monorepo and it uses next 14 with swc minification, plugins and transforms enabled. Recently our build has started to fail with following:

thread '<unnamed>' panicked at <HOME_DIR>/.cargo/registry/src/index.crates.io-6f17d22bba15001f/swc_common-0.33.9/src/input.rs:31:9:
assertion failed: start <= end
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Expected behaviour would be for build to not fail for our codebase.

Provide environment information

Operating System:
  Platform: darwin
  Arch: arm64
  Version: Darwin Kernel Version 21.6.0: Sun Dec 17 22:57:33 PST 2023; root:xnu-8020.240.18.706.2~1/RELEASE_ARM64_T6000
Binaries:
  Node: 18.17.1
  npm: 9.6.7
  Yarn: 3.2.4
  pnpm: N/A
Relevant Packages:
  next: 14.0.4 (reproducable in latest 14.2.3 and canary)
  eslint-config-next: 14.0.4
  react: 18.2.0
  react-dom: 18.2.0
  typescript: 4.9.5
Next.js Config:
  output: N/A

Which area(s) are affected? (Select all that apply)

SWC, Webpack

Which stage(s) are affected? (Select all that apply)

next build (local)

Additional context

We have investigated the issue and found out the cause for this.
Please check them ( hope you find them helpful ): https://github.com/rishabh3112/next-bug-large-repo?tab=readme-ov-file#investigations

I am willing to contribute / discuss issue in more detail if needed.

[icyJoseph]

Should this be taken to SWC then? https://github.com/swc-project/swc/issues the maintainer these is very effective 🎉

[rishabh3112]

@icyJoseph Thanks for suggestion, will raise this with swc as well. Although I think issue is from both nextjs side (i.e. next-swc) and from swc side.

[rishabh3112]

Raised the same at swc here: swc-project/swc#8932