PHPantom LSP is used by PHPStan playground!

[ondrejmirtes]

Hi, I had the idea that this project could be compiled into WASM and used inside the CodeMirror editor for various quality-of-life improvements of the PHPStan on-line playground: https://phpstan.org/try

I had to put in some extra work to make it work for our use-case (https://github.com/ondrejmirtes/phpantom_lsp/commits/wasm/) but the result is a 2 MB binary (Brotli-compressed) that now vastly improves the experience of the playground.

Thanks to LSP we now have:

• Autocompletion (can be invoke with Ctrl (or Cmd)-Space)
• Highlighting of the same symbol when the cursor is inside it (for example for variables and method names)
• On the highlighting the mass-renaming feature is built (hit Ctrl-R)
• Symbol detail on hover - for example if you hover over count() call, it shows a pane with PHP documentation
• Go-to-definition with Ctrl (or Cmd)-click

The playground is ridiculously good now thanks to your work!

Feel free to bring the things I had to do on top of your main branch back to the project (if they make sense, I can't really tell either way), but don't feel any pressure to do so.

[AJenbo]

That's amazing! Very motivational too :)

[AJenbo]

Thanks again for sharing this! I finally had some time to follow up, and I've now landed your changes in main via c83ba88 (additional documentation and CI/CD improvements are in the next commit).

The 0.10.0 release should be out in a few days, including a WASM build, which will hopefully make updating much easier for you going forward.

Regarding the binary size, a very large part of it comes down to the stubs. Pre-processing them should reduce the size and also help startup time. I have a backlog item to look into that at some point.

I'm really looking forward to hearing your talk next week here in Denmark. Hopefully, we'll get a chance to say hi! :)