Do not send delete event every poll for missing folder #22496
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| @@ -747,6 +747,10 @@ namespace ts { | |||
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| function fileChanged(curr: any, prev: any) { | |||
| if (+curr.mtime === 0) { | |||
| if (eventKind === FileWatcherEventKind.Deleted) { | |||
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I have some concerns with this approach. First, I think it might be cleaner (since it would be stateless) to pull up the mtime check from below. Both curr and prev have timestamp 0, so it would succeed and suppress the callback.
Second, I'm concerned that this only addresses the symptoms of the problem. Why are we getting a fileChanged notification that has never existed and continues not to exist? My limited debugging suggests that this used to be suppressed when oldStatus === -1 and newStatus === -1 (somewhere in sys or fs) but that we are now seeing newStatus === -4058. If this is a Node limitation, then I think we need a big comment here explaining that we're working around a library limitation.
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My breakpoint was at line 1448 of fs.js, but I can't get it to load the text without debugging the issue again, which I'm not currently set up to do.
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You are getting this fileChanged callback because we watch missing folders using polling file watch since fs.watch would throw exception on watching missing folders. Earlier before PR #21243 we use to send it based on prev time also being 0 but given that we now have the state of events (eg. to send the create event correctly read the note when deciding to send create event) this seems simpler. |
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With this approach, is there going to be an initial Deleted event? If so, why? |
Fixes #22494