TypeScript 5.6 region diagnostics

[sethidden]

In TypeScript 5.6 the tsserver now allows for returning the diagnostics just for a subset of the buffer contents, rather than the whole buffer.

i remember Emacs becoming locked after opening a giant 30k line .ts file. Since Emacs is vulnerable to having the main thread locked, this could be particularly helpful? I was wondering if it's possible to take advantage of this new tsserver feature in eglot?

https://devblogs.microsoft.com/typescript/announcing-typescript-5-6/#region-prioritized-diagnostics-in-editors8
microsoft/vscode#208713
microsoft/TypeScript#57842 (links to the PR above)

[sethidden]

There's also some other new LS feature, but I think it works out of the box: https://devblogs.microsoft.com/typescript/announcing-typescript-5-6/#granular-commit-characters9