Online repl about swc

[kdy1]

Thanks!

[kdy1]

It would be really hard as swc depends on rustc-ap crates.
Some rustc-ap crates can't be compiled as wasm.

cargo build --release --target wasm32-unknown-emscripten
   Compiling darling_core v0.7.0
   Compiling pmutil v0.2.0
   Compiling swc_atoms v0.1.0 (https://github.com/swc-project/swc.git#67daa279)
   Compiling sourcemap v2.2.1
   Compiling rustc-ap-rustc_data_structures v297.0.0
error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:195:21
    |
195 |                     os::F_WRLCK
    |                     ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:197:21
    |
197 |                     os::F_RDLCK
    |                     ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:200:29
    |
200 |                 let flock = os::flock {
    |                             ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:208:37
    |
208 |                 let cmd = if wait { os::F_SETLKW } else { os::F_SETLK };
    |                                     ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:208:59
    |
208 |                 let cmd = if wait { os::F_SETLKW } else { os::F_SETLK };
    |                                                           ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:224:29
    |
224 |                 let flock = os::flock {
    |                             ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:229:29
    |
229 |                     l_type: os::F_UNLCK,
    |                             ^^ Use of undeclared type or module `os`

error[E0433]: failed to resolve. Use of undeclared type or module `os`
   --> /Users/kdy1/.cargo/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-297.0.0/flock.rs:233:42
    |
233 |                     libc::fcntl(self.fd, os::F_SETLK, &flock);
    |                                          ^^ Use of undeclared type or module `os`

error: aborting due to 8 previous errors

[Skalman]

Unfortunate that compiling to Webassembly seems difficult.

More search terms: Playground
Ref: #106

[dsherret]

Is it possible to do this now? I think so, right? I am using swc in a playground for dprint.

[kdy1]

@dsherret It's possible. But I'm not sure about the roadmap. I was too busy due to corona 19. And now, I have lots of bugs to fix.

[monoclex]

What's the status on this? I'd like to see swc be able to be compiled to wasm.

My usecase is that I've got a project that makes use of typescript that runs on Cloudflare Workers, and often running the typescript compiler on imports takes longer than 50ms, which is hitting the limits of a cloudflare worker. To get under the limit without using regex hacks, I'd like to use rust and swc to compile to wasm and then run that in a cloudflare worker.

[kdy1]

It's absolutely doable. I just do not have enough time.
I'll setup auto deployment for wasm anyway.

[9oelM]

Now that @swc/wasm-web is successfully published, it should be duly possible to make an online repl. I'm happy to work on this. Can I do this?

[kdy1]

@9oelM Of course. Thanks a lot!
I always wanted an online repl but I had too many bugs to fix.

[9oelM]

Alright I find some problems with that while trying to bootstrap the project with @swc/wasm-web. I will file some issues.

[9oelM]

#1291

[9oelM]

https://9oelm.github.io/swc-wasm-demo/
https://github.com/9oelM/swc-wasm-demo

@kdy1

how should I move it into this repo?

Also, what else should I add more to this?

[kdy1]

Wow, cool!

I think it would be great if it's integrated with the website, just like babel's one.
But it would need some design work and using react

So for now, uploading it to https://swc.rs/repl would be enough.
Can you make a pr to the public directory at https://github.com/swc-project/website/tree/master/website/static ? (with repl directory)

[9oelM]

Yeah. I'm not a designer so perhaps somebody else could help later on the design 😂

Okay. I will do that soon. I'm recently busy with work stuffs, so I will do it in a few weeks.

Thank you!

FYI, this demo project already uses React :)

[kdy1]

@9oelM Sounds great. I hope I can do some design work...

[Danue1]

Are we ready to make swc available on the web?

[kdy1]

I think so, swc has @swc/wasm-web.

[9oelM]

Sorry i've been busy last few months. I will start working on it (basically porting what we have already on https://9oelm.github.io/swc-wasm-demo/). Btw, @kdy1 do you want it to be included in https://github.com/swc-project/website or make a separate repl website (although we discussed it few months ago)? I think it makes sense to include it together inside https://github.com/swc-project/website

[kdy1]

I also think website is a proper repository to store repl.

[9oelM]

Ok. then I will make one more page in the Docusaurus website.

[kdy1]

Thanks a lot!

[9oelM]

@kdy1 i think we can close this and open other issues for further improvements

[kdy1]

Yes, you are right.

[Danue1]

Respectful!

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.