Current Status of WASM support

[ChristophP]

I know Parcel v1 supported importing .wasm assets.
https://en.parceljs.org/webAssembly.html

For V2 I couldn't find anything in the docs about it. There are some issues that talked about it but it's unclear whether this exists as of now. There a note in the Roadmap and also this open issue.

So my question is: What is the current state WASM support in Parcel V2? Is there any support WASM at all currently? Could wasm be used by simply fetching and loading it with normal WASM APIs?

[mischnic]

Could wasm be used by simply fetching and loading it with normal WASM APIs?

Yes, this would work:

let wasm = fetch(new URL("./simple.wasm", import.meta.url))
WebAssembly.instantiateStreaming(wasm)

That Wasm file can be treated like any other asset: https://parceljs.org/languages/javascript/#url-dependencies

Is there any support WASM at all currently?

You currently cannot ESM-import Wasm files, that would also be blocked on TLA support in Parcel: #4028
But this shouldn't prevent you from using Wasm

[ChristophP]

Great, will try the URL dependencies approach. That should do for my purposes. 👍

Out of curiosity, is having TLA blocked by something major or does it require bigger under the hood changes somehow to implement it? What's the main challenge?

[mischnic]

does it require bigger under the hood changes somehow to implement it

Yes

https://github.com/orgs/web-infra-dev/discussions/9

[ChristophP]

I see. Thx for your answers.