[Bug]: wasm js bindings generated by wasm-pack is not compatible with raw browser import

[wighawag]

Dojo.js Version

all

What happened?

Currently dojo.js use wasm-pack to generate the js boilerplate to load wasm in browser/node/etc...

Unfortunately wasm-pack generate js file that load wasm via es import (import * as wasm from "./<lib>.wasm") which is not support by browser.

Some bundler will magically transform such import so browser can import it, some other (like vite) requires a community plugin to make it work. But ideally dojoengine should work without such external tool and as such it would be great if dojo.js output a js boilerplate compatible with browser (without require any other toool)

It seems using the wasm-bindgen cli to generate the js binding generate the correct js so it can be loaded in browser without any extra bundler

What is the expected behavior?

I expect to be able to use dojo with raw browser import, without the need for a bundler

Steps to reproduce

generate import map for torii-client and its dependencies

set them up in the index.html and add a script that load the torii-client and you ll'see the following error:

Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "application/wasm". Strict MIME type checking is enforced for module scripts per HTML spec.

see reproduction repo : https://github.com/bug-reproduction/torii-wasm-in-browser

see codepen : https://codepen.io/wighawag/pen/RwzddBM

Trace

No response

Is there an existing issue for this?

• I have searched the existing issues and verified no issue exits for this problem.

[ShantelPeters]

Hi @wighawag please can I take this up

[wighawag]

@ShantelPeters I am not the maintainer of this repo

[ShantelPeters]

Alright thank you @wighawag

[wighawag]

Linking the reply here : dojoengine/dojo.c#55 (comment)

It suggest to use --target no-modules but this is less than ideal. we should be able to use es module in modern browser. And I believe this require some more wiring on using it. though this might be always the case.

[ponderingdemocritus]

yes, these wasm modules are annoying. I'll try and support this soon - or feel free to open PR.