[BUG] module.findSourceMap is not implemented yet!

[abel3t]

Describe the bug

When I try dev:worker, I found these errors:
On Terminal: ✘ [ERROR] <Formatting threw (Error: [unenv] module.findSourceMap is not implemented yet!

Browser:

Error: The script will never generate a response.
    at async Object.fetch (file:///{mypath}/node_modules/miniflare/dist/src/workers/core/entry.worker.js:1029:22)

Steps to reproduce

1. I use Kinde sdk for nextjs in middleware
2. Setup @opennextjs/cloudflare
3. Run dev:worker

Expected behavior

On Terminal: ✘ [ERROR] <Formatting threw (Error: [unenv] module.findSourceMap is not implemented yet!

Browser:

Error: The script will never generate a response.
    at async Object.fetch (file:///{mypath}/node_modules/miniflare/dist/src/workers/core/entry.worker.js:1029:22)

@opennextjs/cloudflare version

0.2.1

Node.js version

20.8.1

Wrangler version

3.78.10

next info output

System:
    OS: macOS 15.0.1
    CPU: (8) arm64 Apple M1 Pro
    Memory: 712.38 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.8.1 - ~/.nvm/versions/node/v20.8.1/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.1.0 - ~/.nvm/versions/node/v20.8.1/bin/npm
    pnpm: 8.6.10 - ~/Library/pnpm/pnpm
    bun: 1.0.30 - ~/.bun/bin/bun
  Browsers:
    Brave Browser: 131.1.73.89
    Chrome: 130.0.6723.117
    Safari: 18.0.1

Additional context

No response

[vicb]

I use Kinde sdk for nextjs in middleware

What is your setup - this is not enough information to reproduce.
Also note that middleware is not yet supported on the main branch - middleware support is being implemented in the experimental branch.

Error: [unenv] module.findSourceMap is not implemented yet!

findSourceMap is not implemented as source paths (and map paths) do not make sense for workers as we don't have access to the file system. unenv should probably return undefined.