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

[MicahZoltu]

Issue Type: Bug

TypeScript Version: 4.1.4

Steps to reproduce crash

1. clone https://github.com/Zoltu/augur-helpers/tree/011c96f2bbddf1eca389b164c4ef8fa8684646a3
2. load directory in VSCode
3. open app/ts/index.ts

TS Server Log
tsserver.log

TS Server Error Stack
Server: semantic

TypeError: Cannot read property 'indexOf' of undefined
    at Object.parsePackageName (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:39472:30)
    at ConfiguredProject.Project.enablePlugin (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:151962:24)
    at ConfiguredProject.enablePluginsWithOptions (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:152477:30)
    at ProjectService.loadConfiguredProject (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154206:25)
    at ProjectService.createAndLoadConfiguredProject (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154145:22)
    at ProjectService.createLoadAndUpdateConfiguredProject (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154150:36)
    at ProjectService.assignProjectToOpenedScriptInfo (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:155055:44)
    at c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:155395:97
    at Object.flatMap (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:513:25)
    at ProjectService.applyChangesInOpenFiles (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:155395:41)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:156413:46)
    at c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:158286:88
    at IOSession.Session.executeWithRequestId (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:158277:28)
    at IOSession.Session.executeCommand (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:158286:33)
    at IOSession.Session.onMessage (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:158310:35)
    at Interface.<anonymous> (c:\Users\me\AppData\Local\Programs\Microsoft VS Code\resources\app\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 10.0.19042

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (8 x 3600)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	63.94GB (47.02GB free)
Process Argv	--crash-reporter-id 86d05c41-6f2c-42af-8acb-7c09a6f1b4fc
Screen Reader	no
VM	0%

Extensions (16)

Extension	Author (truncated)	Version
better-comments	aar	2.1.0
vscode-css-formatter	aes	1.0.1
better-toml	bun	0.3.2
xml	Dot	2.5.0
EditorConfig	Edi	0.14.3
solidity	Jua	0.0.64
csharpfixformat	Leo	0.0.84
vscode-docker	ms-	1.9.0
csharp	ms-	1.23.9
python	ms-	2019.11.50794
remote-containers	ms-	0.154.1
remote-ssh	ms-	0.62.0
remote-ssh-edit	ms-	0.62.0
azure-account	ms-	0.8.7
debugger-for-chrome	msj	4.12.3
vscode-svg-previewer	vit	0.6.0

A/B Experiments

vsliv368cf:30146710
vsreu685:30147344
python383:30185418
pythonvspyt617cf:30253240
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstry244:30256636
pythonvsdeb440:30248342
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pythonvspyt875:30251590

[MicahZoltu]

Duplicate of #116219