Cancel initial file search if it takes too long #1242
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Fixes #986 (hopefully)
There's a lot of detail about the problem in the linked issue and my response at the bottom. But briefly:
This PR starts the searches and cancels them after ~15s. If the extension hasn't found anything within 15s then it's likely it'll take ~15s any time you open that project and that would've been an absolutely horrible dev experience that we probably would've been notified about.
It seems reasonable to set a time limit on the search do determine if we need to start a language server