tsserver picks up interlocking files created by emacs

[ananthakumaran]

Last week I started to work on a prototype typescript project (It's been some time since I have used typescript/tide for professional work). The editor was really sluggish for some reason, though things were working fine. I started to look at the log file, there was too much activity going on for some reason. Each save triggered a full project reload. After some digging, it looks like the interlocking files created by emacs (filename starts with .#) is picked by tsserver and it seems to cause a full project reload in the backend. Some of the related logs can be found below.

If I disable interlocking via (setq create-lockfiles nil), all of this grinding stops. I don't remember this happening in the past. I am not sure if this is a recent change. We need to disable this by default. How we do it is still a question.

Info 2549 [10:35:12.752] DirectoryWatcher:: Triggered with [removed]/src/.#field.ts :: WatchInfo: [removed]/src 1 Project: [removed]/tsconfig.json WatchType: Wild card directory
Info 2550 [10:35:12.753] Scheduled: [removed]/tsconfig.json
Info 2551 [10:35:12.753] Scheduled: *ensureProjectForOpenFiles*
Info 2552 [10:35:12.753] Elapsed:: 0ms DirectoryWatcher:: Triggered with [removed]/src/.#field.ts :: WatchInfo: [removed]/src 1 Project: [removed]/tsconfig.json WatchType: Wild card directory
Info 2553 [10:35:12.753] DirectoryWatcher:: Triggered with [removed]/src/.#field.ts :: WatchInfo: [removed]/src 1 Project: [removed]/tsconfig.json WatchType: Failed Lookup Locations
Info 2554 [10:35:12.753] Scheduled: [removed]/tsconfig.json, Cancelled earlier one
Info 2555 [10:35:12.753] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
Info 2556 [10:35:12.753] Elapsed:: 0ms DirectoryWatcher:: Triggered with [removed]/src/.#field.ts :: WatchInfo: [removed]/src 1 Project: [removed]/tsconfig.json WatchType: Failed Lookup Locations
Info 2557 [10:35:12.753] request:
    {"command":"syntacticDiagnosticsSync","seq":"8513","arguments":{"file":"[removed]/src/field.ts"}}
Info 2558 [10:35:12.757] Starting updateGraphWorker: Project: [removed]/tsconfig.json
Info 2559 [10:35:13.539] Finishing updateGraphWorker: Project: [removed]/tsconfig.json Version: 60 structureChanged: true Elapsed: 782ms
Perf 2560 [10:35:13.539] 8513::syntacticDiagnosticsSync: elapsed time (in milliseconds) 786.1921
Info 2561 [10:35:13.539] response:
    {"seq":0,"type":"response","command":"syntacticDiagnosticsSync","request_seq":"8513","success":true,"body":[]}
Info 2562 [10:35:13.540] request:
    {"command":"semanticDiagnosticsSync","seq":"8514","arguments":{"file":"[removed]/src/field.ts"}}
Perf 2563 [10:35:13.544] 8514::semanticDiagnosticsSync: elapsed time (in milliseconds) 4.0577
Info 2564 [10:35:13.544] response:
    {"seq":0,"type":"response","command":"semanticDiagnosticsSync","request_seq":"8514","success":true,"body":[]}
Info 2565 [10:35:13.544] Running: [removed]/tsconfig.json
Info 2566 [10:35:13.544] Running: *ensureProjectForOpenFiles*
Info 2567 [10:35:13.544] Structure before ensureProjectForOpenFiles:
Info 2568 [10:35:13.544] Project '[removed]/tsconfig.json' (Configured) 0
Info 2568 [10:35:13.544] 	Files (445)
	[removed]/tide/tsserver/lib.es5.d.ts
	[removed]/tide/tsserver/lib.es2015.d.ts
	[removed]/tide/tsserver/lib.es2016.d.ts
	[removed]/tide/tsserver/lib.es2017.d.ts
	[removed]/tide/tsserver/lib.es2018.d.ts