Experimental Decorator/s support

[1a35e1]

Hi all,

Great tool, took it for a spin on a pretty large NestJS project. Given experimentalDecorators has been on the standards track for a while I can appreciate, why some this is not working 100% yet.

In NestJS, its relatively common to have parameters injected in the constructor() or a method()

It would be good if we could have a way to disable this warning/error while the API is in flux.

Currently I get Decorators are not valid here.biome(parse) which would be nice to ignore for now.

Will be trying this on a ReactNative project next.

Thanks for the great work!

[ematipico]

We support experimental decorators: https://biomejs.dev/reference/configuration/#javascriptparserunsafeparameterdecoratorsenabled

:)

[1a35e1]

Ah just found it. TYVM.

Just needed to add this!

...
"javascript": {
    "parser": {
      "unsafeParameterDecoratorsEnabled": true
    }
  },
....

[ebarthur]

For some reason, this is not working for me. I'm using v1.9.4 in a Nest.js project

[HiChen404]

Maybe you need to restart the server.

Biome: restart LSP server.

It works for me. (v1.9.4)

[Lultik]

@1a35e1
UPD: I have the same error in JB Webstorm:

unsafeParameterDecoratorsEnabled is enabled:

Restarting the server does not fix anything:

Restart LSP server form actions fix this issue for 1 second and then this error reappears.

[ebarthur]

I dunno why this is happening but this is affecting our project at work.

[Lultik]

For now, I see only one solution: disable Biome plugin and run biome check --fix manually. 😢

[andrewmurraydavid]

I don't understand why this is closed sine WebStorm plugin still shows this false error.

[andrewmurraydavid]

To provide more context, the times it fails is when I have 2 or more projects open with different configurations. For example, is I have a NestJS project open and a React (vite) project open, one will fail. If NestJS project works correctly, the React project does not. If the React project works correctly, the decorator error show up.

[ematipico]

It seems you have some issues related to your editor and how it's set with Biome. It's not related to decorators.

There's no need to revive old discussions. Instead, seek help on Discord or open a new issue if you feel there's a bug (with a reproduction). Thank you!