Sourcemap support?

[jaredly]

I'd be interested in contributing sourcemap support, if you can give me some pointers in the right direction.

[bobzhang]

what do you think of working in this direction: #151

[jaredly]

That would also be a useful tool, but I think it's an entirely separate feature?

[jaredly]

I've used sourcemaps in clojurescript (which is quite a different language), and they're super useful

[lightsofapollo]

My 2c- when trying to convince my past teams and companies to use some X compile-to-js technology it was very, very difficult to win this argument without sourcemap support (particularly when doing some interop /w another JS only source)

[alcarvalho]

I had my boss demoing for me how clojurescript could be debugged from the browser, how you could use the REPL to connect to it and write clojurescript to inspect and change values on the fly.

IMHO having source maps is the very first step in the direction of having something that's easily hackable like clojurescript.

[v-ahuja]

We've started showing integrations of bucklescript in js stacks at Bloomberg and source-maps is a recurring question.

[bobzhang]

hi @vahuja13 , it is great to hear your progress, can you share with more a bit more about detail, or you can find me on discord and chat offline, thanks!

[dvisztempacct]

Any movement on this? @jaredly asked for some direction but I don't see any (at least in this thread.)

[hhugo]

You can have a look at the sourcemap implementation in js_of_ocaml
here https://github.com/ocsigen/js_of_ocaml/blob/master/compiler/lib/source_map_yojson.ml.in

[aaronshaf]

Would be nice for test coverage

[dawee]

Would also be cool for tracking errors using sentry.

[texastoland]

Regardless whether it's useful for debugging, it's necessary for runtime tooling support like Quokka and blocking wallabyjs/quokka#153. @jaredly Did you already have a look how much work would be required? Has anyone attempted it?

[hoichi]

Chiming in to say that Wallaby.js introduced a Time Travel Debugger, so if we want to be on par with Elm*, we need source maps for the custom Wallaby compiler 😀.

Any news yet?

* I know it’s not the same time travel: in Elm’s case what changes through time is the state; in Wallaby’s, execution point.