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TS Server fatal error: Cannot read property 'languageServiceRefCount' of undefined #37500

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@pash90

Description

@pash90

Issue Type: Bug

TypeScript Version: 3.8.3
Steps to reproduce crash
1.
2.
3.
TS Server Error Stack

TypeError: Cannot read property 'languageServiceRefCount' of undefined
    at releaseDocumentWithKey (tsserver.js:112241:13)
    at Object.releaseDocument (tsserver.js:112236:20)
    at tsserver.js:135319:45
    at Object.forEach (tsserver.js:167:30)
    at Proxy.dispose (tsserver.js:135318:20)
    at InferredProject.Project.close (tsserver.js:139542:38)
    at InferredProject.close (tsserver.js:140420:40)
    at ProjectService.removeProject (tsserver.js:141660:25)
    at ProjectService.cleanupAfterOpeningFile (tsserver.js:143206:30)
    at ProjectService.applyChangesInOpenFiles (tsserver.js:143404:26)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (tsserver.js:144260:46)
    at tsserver.js:146003:88
    at IOSession.Session.executeWithRequestId (tsserver.js:145994:28)
    at IOSession.Session.executeCommand (tsserver.js:146003:33)
    at IOSession.Session.onMessage (tsserver.js:146027:35)
    at Interface.<anonymous> (tsserver.js:147342:27)
    at Interface.emit (events.js:203:13)
    at Interface._onLine (readline.js:316:10)
    at Interface._normalWrite (readline.js:461:12)
    at Socket.ondata (readline.js:172:10)
    at Socket.emit (events.js:203:13)
    at addChunk (_stream_readable.js:295:12)
    at readableAddChunk (_stream_readable.js:276:11)
    at Socket.Readable.push (_stream_readable.js:210:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:166:17)

VS Code version: Code - Insiders 1.44.0-insider (c0eea2a, 2020-03-19T09:21:46.589Z)
OS version: Darwin x64 19.3.0

System Info
Item Value
CPUs Intel(R) Core(TM) i7-7820HQ CPU @ 2.90GHz (8 x 2900)
GPU Status 2d_canvas: enabled
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
metal: disabled_off
multiple_raster_threads: enabled_on
oop_rasterization: disabled_off
protected_video_decode: unavailable_off
rasterization: enabled
skia_renderer: disabled_off_ok
video_decode: enabled
viz_display_compositor: enabled_on
viz_hit_test_surface_layer: disabled_off_ok
webgl: enabled
webgl2: enabled
Load (avg) 6, 6, 7
Memory (System) 16.00GB (0.77GB free)
Process Argv -psn_0_20140852
Screen Reader no
VM 0%
Extensions (20)
Extension Author (truncated) Version
atlascode atl 2.4.10
vscode-mjml att 1.6.0
markdown-checkbox bie 0.1.3
markdown-preview-github-styles bie 0.1.6
githistory don 0.6.3
gitlens eam 10.2.1
vscode-npm-script eg2 0.3.11
vsc-material-theme Equ 32.5.0
vsc-material-theme-icons equ 1.1.4
auto-rename-tag for 0.1.1
applescript idl 0.18.1
vscode-styled-components jpo 0.0.28
python ms- 2020.3.69010
vscode-typescript-tslint-plugin ms- 1.2.3
material-icon-theme PKi 4.0.1
vscode-yaml red 0.7.2
jinjahtml sam 0.12.0
code-settings-sync Sha 3.4.3
mdx sil 0.1.0
jinja who 0.0.8

(2 theme extensions excluded)

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BugA bug in TypeScriptCrashFor flagging bugs which are compiler or service crashes or unclean exits, rather than bad outputFix AvailableA PR has been opened for this issue

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