🐛 Integration breaks for mono repos with 10+ packages

[TheDadi]

IDE and version

IntelliJ IDEA 2024.3.5

Extension version

Version 1.7.0 and 1.7.0-nightly build

Biome version

1.9.4

Operating system

• Windows
• macOS
• Linux

Description

The never plugin versions 1.7.0 spawn a language service per directory which works great for codebases with few packages. We are running biome in a mono repo with 40+ packages which leads to this problem. The Integration starts spawning language services per directory until it reaches a maybe max of 10 instances running, after that it stops spawning new ones and the integration breaks. As far as i understand in the older versions it used to only spawn 1 instance of the biome language service and reuse it in different directories (which had other issues as far as i understood).

Showcase with repro repo linked below: package 1-10 have a language service running 11 does not spawn one

Steps to reproduce

1. Clone https://github.com/TheDadi/biome-intellij-repro-monorepo
2. pnpm install
3. open the js file in each sub package
4. check if biome is running on the current file

Expected behavior

The integration works for bigger mono repos.

Does this issue occur when using the CLI directly?

No

Link to a minimal reproduction

https://github.com/TheDadi/biome-intellij-repro-monorepo

[siketyan]

As far as i understand in the older versions it used to only spawn 1 instance of the biome language service and reuse it in different directories (which had other issues as far as i understood).

Indeed, previously the plugin used only one instance of Biome, but it also means you could use only one config in the monorepo. Using an instance per directory was a solution of this problem.

[siketyan]

I think the 10 packages limit can be a hard limit of IntelliJ's LSP integration. If so, we will need to migrate the plugin to use workspace folders protocol.

[siketyan]

@TheDadi We have added support for monorepo project since Biome v2.0. With the new-style monorepo, only one instance of the Biome LSP will be launched in the project. Could you try it when you have time? https://biomejs.dev/guides/big-projects/#monorepo