Bindings' long unformatted lines does not work well with RLS

[LaylBongers]

Describe the Bug

RLS (and by extension vscode-rust) doesn't like really long lines. It expects the code to be formatted reasonably. This as a result causes some issues. Errors are shown about RLS not being able to tokenize long lines for performance reasons, and tooltips show the entire line, slowing down VSCode in the process:

Expected Behavior

It would be nice if these bindings were run through rustfmt, or just formatted a bit more friendly to RLS.

[alexcrichton]

Heh this is quite the interesting issue!

We actually already have support for formatting the generated binding by setting the WEBIDL_RUSTFMT_BINDING=1 env var, but we turned it off by default at the time it was added because the bindings were so large and executing rustfmt took far too long.

Nowadays though with web-sys being much slimmer by default, I suspect we could flip the defaults! Could you try building with that env var locally and see if it improves the IDE experience?

[Pauan]

@alexcrichton Also, we should change the docs so they properly format things.

I often try to use the [src] link to see how a particular type/method is implemented, but right now it's completely useless.

[Pauan]

I'm not sure when this regressed, but it seems that the web-sys docs are not being formatted, so they appear as a huge blob of unreadable code.

[alexcrichton]

This only works if rustfmt installed, so perhaps docs.rs was updated to not have rustfmt installed?