Web version

[TheYkk]

I think It would be great to use this tool on the web with webassembly.

[egonelbre]

This implementation depends on being able to access source code and the binary. While uploading the binary is a trivial change, however accessing the local disk -- not so much. It'll be probably easier to run the program locally and use it that way.

I'm not against someone adding it, but I don't see a reason to add it myself.

[gedw99]

@TheYkk i agree that seeing the wasm matching the golang is really useful . Especially to see the output on tinygo compared to the standard golang wasm compiler.

I think that running it locally on your desktop should be the initial scope so that it’s easy to access local disk.

later we can use hackpadfs ( a web based file system weiten in golang ) to access the source and wasm in a browser .

let me know if desktop is suitable for phase 1

[egonelbre]

Sure, WebAssembly support definitely would be nice.

However, for supporting wasm you need a way to get source-line mapping... and AFAIK, Go doesn't emit dwarf/line-info golang/go#33503

TinyGo might have sourcemap support, but I haven't checked.

So the first step would be to add necessary support for them.

Hackpadfs seems rather large dependency and I wouldn't want to pull it in. It also doesn't seem to solve the problem of accessing the data.

[llindemann]

TinyGo might have sourcemap support, but I haven't checked.

Yes, it works with TinyGo (just checked)

[gedw99]

@llindemann
Got a demo of this ?

@egonelbre
hackpadfs provides a file System in the browser itself . Does that help ?

[egonelbre]

@gedw99 the issue of getting data to the program isn't about having a filesystem, it's about uploading and/or binding to the local filesystem.

[llindemann]

@llindemann Got a demo of this ?

@gedw99 Yes, here: https://blog.noops.land/debugging-webAssembly-from-go-sources-in-chrome-devtools

[gedw99]

Hey @llindemann
The article is really useful. I had no idea that debugging wasm was that easy in google chrome

[gedw99]

I can confirm that tinygo def has DWARF support. Been using it for debug info for a few days.

https://github.com/emad-elsaid/debugger