Use Bun even when compatibility is a problem | Bun | Page 1

bright hound May 22, 2023, 10:30 AM

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please provide more info, such as the exact error/issue you face when trying to use jimp on bun

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the answer to your question is it vastly depends on a case-by-case basis depending on what the actual cause of the problem

pure jacinth May 22, 2023, 3:37 PM

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https://github.com/oven-sh/bun/issues/2996
@pseudo cairn narrowed the bug down to this. thanks for reporting.

GitHub

export default class extends EventEmitter (has commonjs symbol) bre...

What version of Bun is running? 0.6.2 What platform is your computer? No response What steps can reproduce the bug? You can try using the jimp module or this reproduction: node_modules/jimp/index.j...

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i tried using bun build --target=bun on jimp but it didnt seem to work

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thats your best bet since bun build does the cjs+esm interop stuff different than the runtime

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its also quite anoying to have an extra build step but if it works you're stuck with that for now.

pure jacinth May 22, 2023, 3:58 PM

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the way that bun handles commonjs + es modules
in this case it mistakingly thinks one of jimps' es modules is a commonjs module (since it extends the event emitter class). thats a bug in bun

bun build is a javascript bundler that will bundle a file and all of its dependencies into one file

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you can use it like bun build --target=bun index.ts --outfile=bundle.js where that imports jimp and your other app code

then you can run bun bundle.js to run it

pure jacinth May 22, 2023, 4:22 PM

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yeah

#Use Bun even when compatibility is a problem