this post was submitted on 01 Mar 2026
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Hello, I was looking at WXT extension framework which supports multiple UI frameworks, but they are all JavaScript frameworks only. Is there any alternative way to write Firefox browser extension in a different language (like Rust / Python / Go, etc.) with minimal or no JavaScript, with a ok developer experience?

Transpilation to JavaScript is fine if it is well supported in Firefox with ok developer experience.

I also checked Dart but its support on Firefox does not seem great, like the extension only works on Chrome browsers.

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[โ€“] e8d79@discuss.tchncs.de 6 points 4 days ago* (last edited 4 days ago)

Yes its kind of possible with F# and Fable. I did it a few years ago. I say kind of because its still transpiling to javascript.

[โ€“] Zikeji@programming.dev 5 points 5 days ago

You could write something in rust for WASM and have minimal JavaScript. Looks like there are no frameworks around this concept as far as I'm aware, but I don't see why it wouldn't work in Firefox.