tsserverlibrary.js needs to be kept up-to-date in the LKG

[weswigham]

We don't use it internally, but we ship it so consumers can package their own tsserver for whatever environment suits them (ie, browser extension). We have had issues opened before when we've outright broken it, so it being out-of-date is also likely an issue. (Specifically, if that old issue is any indication, we'll break webstorm by not updating it or removing it)

[mhegazy]

@RyanCavanaugh can you take a look.

[weswigham]

Please note, its declaration file also needs the stripInternal treatment, or we expose our internals in its API (and we are right now, which isn't great).

[mhegazy]

Already tracked by #24966