[@yarnpkg/sdks] tsserver plugin support?

[7cff]

I'm trying to set up integration between tsserver and eslint in order for linting to show up in my IDE via typescript-language-server. This involves adding the following line to tsconfig.json:

    "plugins": [{"name": "typescript-eslint-language-service"}]

However, while this works when running outside of Yarn, when running inside of Yarn (via the version the sdks package ships), it no longer works. Running strace seems to indicate that while a standard tsserver binary attempts to search for the package in node_modules, Yarn doesn't do it at all. Two questions:

1. Is it known that language service plugins are broken under Yarn PNP?
2. Would it be possible to get this supported? (this is heavily related to [Case Study] Perfect TypeScript Integration #589)

[Labeeb2339]

PnP support for this is included in Yarn's generated TypeScript SDK. The current SDK generator wraps tsserver, enables the PnP loader, and explicitly turns on TypeScript's allowLocalPluginLoads because plugins otherwise get resolved relative to the global TypeScript installation.

Try generating the SDK with yarn dlx @yarnpkg/sdks base, ensure the plugin is a dependency of the project, and configure typescript-language-server with --tsserver-path .yarn/sdks/typescript/bin/tsserver. Launching the system/global tsserver bypasses the PnP wrapper. The editor docs also show the generated tsserver path for LSP clients.

Refs: current SDK generator and Editor SDK docs.