fix(51100): ensure tsserver shuts down when parent process is killed#51107
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When using IPC channel (
--useNodeIpc) for communicating with tsserver, the child tsserver process did not shut down on parent process disconnecting (for example due to it being killed).Call
exit()on IPC disconnect, same as stdio-based communication does when pipe to the parent process is destroyed.Initially I've moved theexitimplementation fromIOSessionto the baseSessionto avoid having it duplicated inIOSessionandIpcIOSessionbut changed so that implementations are duplicated after @sheetalkamat's comment. It's unfortunate that this creates duplication that could potentially go out of sync. I guess potentially there could be intermediary class that have this shared logic but that might be overkill.EDIT:
IpcIOSessioninheritsIOSessionso we don't have to duplicate it.Fixes #51100