TS Server fatal error: Cannot read property 'indexOf' of undefined

[sl45sms]

Issue Type: Bug

❗️❗️❗️ Please fill in the sections below to help us diagnose the issue ❗️❗️❗️

TypeScript Version: 4.1.4

Steps to reproduce crash

1. sudden crash, no changes of configuration from me.

TS Server Log
❗️Server logging disabled. To help us fix crashes like this, please enable logging by setting:

"typescript.tsserver.log": "verbose"

After enabling this setting, future crash reports will include the server log.

TS Server Error Stack
Server: semantic

TypeError: Cannot read property 'indexOf' of undefined
    at Object.parsePackageName (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:39472:30)
    at ConfiguredProject.Project.enablePlugin (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:151962:24)
    at ConfiguredProject.enablePluginsWithOptions (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:152477:30)
    at ProjectService.loadConfiguredProject (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:154206:25)
    at ProjectService.createAndLoadConfiguredProject (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:154145:22)
    at ProjectService.createLoadAndUpdateConfiguredProject (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:154150:36)
    at ProjectService.assignProjectToOpenedScriptInfo (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:155055:44)
    at /home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:155395:97
    at Object.flatMap (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:513:25)
    at ProjectService.applyChangesInOpenFiles (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:155395:41)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:156413:46)
    at /home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:158286:88
    at IOSession.Session.executeWithRequestId (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:158277:28)
    at IOSession.Session.executeCommand (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:158286:33)
    at IOSession.Session.onMessage (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:158310:35)
    at Interface.<anonymous> (/home/docker/.vscode-server/bin/5d424b828ada08e1eb9f95d6cb41120234ef57c7/extensions/node_modules/typescript/lib/tsserver.js:160520:27)
    at Interface.emit (events.js:315:20)
    at Interface._onLine (readline.js:329:10)
    at Interface._normalWrite (readline.js:474:12)
    at Socket.ondata (readline.js:186:10)
    at Socket.emit (events.js:315:20)
    at addChunk (_stream_readable.js:295:12)
    at readableAddChunk (_stream_readable.js:271:9)
    at Socket.Readable.push (_stream_readable.js:212:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:186:23)

VS Code version: Code 1.53.1 (5d424b8, 2021-02-08T23:29:42.785Z)
OS version: Windows_NT x64 10.0.18363
Remote OS version: Linux x64 4.15.0-121-generic

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz (8 x 2112)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: enabled rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	7.83GB (1.49GB free)
Process Argv	--crash-reporter-id 81e18dca-f05f-4aff-afe1-37a207f03257
Screen Reader	no
VM	0%

Item	Value
Remote	SSH: briandocker
OS	Linux x64 4.15.0-121-generic
CPUs	Intel Xeon Processor (Skylake, IBRS) (8 x 2099)
Memory (System)	30.68GB (2.44GB free)
VM	0%

Extensions (20)

Extension	Author (truncated)	Version
vscode-android-webview-debug	mpo	1.1.1
remote-containers	ms-	0.158.0
remote-ssh	ms-	0.63.0
remote-ssh-edit	ms-	0.63.0
remote-wsl	ms-	0.53.4
vscode-remote-extensionpack	ms-	0.20.0
debugger-for-chrome	msj	4.12.12
android-dev-ext	ade	1.3.2
vscode-docker	ms-	1.9.1
java	red	0.74.0
markdown-preview-enhanced	shd	0.5.16
vscodeintellicode	Vis	1.2.11
vscode-java-debug	vsc	0.31.0
vscode-java-dependency	vsc	0.18.0
vscode-java-pack	vsc	0.12.1
vscode-java-test	vsc	0.28.0
vscode-maven	vsc	0.27.1
docker	vsc	1.0.0
yaml	vsc	1.0.0
save-and-run	wk-	0.0.22

A/B Experiments

vsliv368:30146709
vsreu685:30147344
python383:30185418
pythonvspyt617cf:30253240
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492:30211401
pythonvsdeb440:30248342
pythonvsded773:30248341
pythonvspyt600cf:30251589

[IllusionMH]

/duplicate of #116219
Fix should go out with VS Code 1.53.2