TS to CommonJS? | Bun | Page 1

chrome osprey Sep 21, 2023, 1:04 PM

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Is there a way to build JS files so they are CommonJS syntax? bun build only outputs ESM. Ideally, I want bun build to use the options in tsconfig.json

spice cedar Sep 21, 2023, 2:07 PM

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The docs say: “Currently the bundler only supports one module format: "esm". Support for "cjs" and "iife" are planned.” https://bun.sh/docs/bundler#format

Bun

Bun.build – Bundler | Bun Docs

Bundle code for consumption in the browser with Bun's native bundler.

quick sage Sep 21, 2023, 8:40 PM

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This is planned

next lake Sep 22, 2023, 8:41 AM

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May I ask the planned date of this?

quick sage Sep 22, 2023, 7:00 PM

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Not particularly soon

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Most people who use Bun's bundler will also use the Bun runtime

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And because Bun supports ESM there aren't many reasons to target CommonJS

next lake Sep 23, 2023, 4:11 AM

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I see. In my case I'm using bun to build and publish npm sdks with cjs+esm support for others to use. Currently I have to stick with esbuild because of this.

quick sage Sep 25, 2023, 7:59 PM

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yep we understand that

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we'll be doing a lot of work on the bundler soon

bronze wren Aug 11, 2024, 10:34 AM

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Hi, has this changed and is this possible now?

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I am trying to use the transpiler API but don't know how I can add support for cjs to it

#TS to CommonJS?