The esbuild plugin doesn't work flawlessly with tsup

[favna]

🐛 The bug

I'm attempting to implement magic-regexp in the project https://github.com/sapphiredev/utilities (draft PR: https://github.com/sapphiredev/utilities/pull/755), however, for some unknown reason the esbuild plugin is giving me compiler errors. Sadly I cannot manage to reproduce the issue in a clean project so it's somehow something very specific with our project. Even if I use the exact same tsup options in a clean project, the issues does not show up in such a project.

The error I currently get is:

X [ERROR] Unexpected token (9:29) [plugin MagicRegExpTransformPlugin]

  This error came from the "onLoad" callback registered here:

    ../../node_modules/esbuild/lib/main.js:1340:8:
X       1340 │         [ERRORawait promise;
           ╵         ]^ 

    at setupPlugins (file:///F:/sapphiredev/utilities/node_modules/unplugin/dist/index.mjs:995:16)
    at async handlePlugins (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1340:9)

Unexpected token (9:29) [plugin MagicRegExpTransformPlugin]

  This error came from the "onLoad" callback registered here:

    ../../node_modules/esbuild/lib/main.js:1340:8:
      1340 │         await promise;
           ╵         ^

    at setupPlugins (file:///F:/sapphiredev/utilities/node_modules/unplugin/dist/index.mjs:995:16)
    at async handlePlugins (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1340:9)

IIFE dist\iife\index.global.js     29.93 KB
IIFE dist\iife\index.global.js.map 70.50 KB
IIFE ⚡️ Build success in 188ms
CJS Build failed
Error: Build failed with 1 error:
error: Unexpected token (9:29)
    at failureErrorWithLog (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1651:15)
    at F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1059:25
    at runOnEndCallbacks (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1486:45)
    at buildResponseToResult (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1057:7)
    at F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:1086:16
    at responseCallbacks.<computed> (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:704:9)
    at handleIncomingPacket (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:764:9)
    at Socket.readFromStdout (F:\sapphiredev\utilities\node_modules\esbuild\lib\main.js:680:7)
    at Socket.emit (node:events:519:28)
    at addChunk (node:internal/streams/readable:559:12)
ESM Build failed

I have linked the draft PR with the WIP branch below as opposed to a stackblitz because the issue is very specific to our project it seems.

To reproduce:

1. Clone the repository
2. Check out the proper branch
3. Run yarn install to install dependencies
4. Build the package that packages/utilities depends on with:

   yarn turbo run build --filter "@sapphire/node-utilities" --filter "@sapphire/eslint-config" --filter "@sapphire/prettier-config"

5. cd into packages/utilites
6. Run yarn build
7. Observe the error being thrown

🛠️ To reproduce

https://github.com/sapphiredev/utilities/pull/755

🌈 Expected behaviour

I am able to build my code correctly using tsup with the esbuild plugin

ℹ️ Additional context

No response

[favna]

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