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

[stigur]

Issue Type: Bug

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

TypeScript Version: 4.5.2

Steps to reproduce crash
1.
2.
3.

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 'flags' of undefined
    at getPropertyOfObjectType (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:57005:22)
    at getPropertyOfType (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:57665:24)
    at resolveESModuleSymbol (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49811:54)
    at getTargetOfNamespaceImport (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:48996:28)
    at getTargetOfAliasDeclaration (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49230:28)
    at resolveAlias (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49275:30)
    at getSymbol (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47833:38)
    at resolveNameHelper (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:48125:34)
    at resolveName (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:48108:20)
    at resolveEntityName (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49447:42)
    at resolveEntityName (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49455:33)
    at getSymbolOfPartOfRightHandSideOfImportEquals (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49407:24)
    at getTargetOfImportEqualsDeclaration (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:48859:28)
    at getTargetOfAliasDeclaration (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49226:28)
    at resolveAlias (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49275:30)
    at resolveSymbol (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:49265:67)
    at mergeSymbol (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47619:42)
    at c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47734:47
    at Map.forEach (<anonymous>)
    at mergeSymbolTable (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47732:20)
    at mergeSymbol (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47643:21)
    at c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47734:47
    at Map.forEach (<anonymous>)
    at mergeSymbolTable (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47732:20)
    at mergeModuleAugmentation (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47748:17)
    at initializeTypeChecker (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:85027:25)
    at Object.createTypeChecker (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:47390:9)
    at Object.getTypeChecker (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:114385:79)
    at synchronizeHostData (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:159863:21)
    at Object.getProgram (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:159984:13)
    at AutoImportProviderProject.Project.updateGraphWorker (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:164998:53)
    at AutoImportProviderProject.Project.updateGraph (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:164927:42)
    at AutoImportProviderProject.updateGraph (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:165772:70)
    at Object.updateProjectIfDirty (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:166409:45)
    at ConfiguredProject.Project.getPackageJsonAutoImportProvider (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:165547:32)
    at ConfiguredProject.Project.updateGraph (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:164965:26)
    at ConfiguredProject.updateGraph (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:165920:63)
    at ProjectService.createLoadAndUpdateConfiguredProject (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:167644:25)
    at ProjectService.assignProjectToOpenedScriptInfo (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:168727:44)
    at c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:169067:97
    at Object.flatMap (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:522:25)
    at ProjectService.applyChangesInOpenFiles (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:169067:41)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:170225:46)
    at c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:172158:88
    at IOSession.Session.executeWithRequestId (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:172149:28)
    at IOSession.Session.executeCommand (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:172158:33)
    at IOSession.Session.onMessage (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:172184:35)
    at Interface.<anonymous> (c:\Users\stigu\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:174789:31)
    at Interface.emit (events.js:315:20)
    at Interface._onLine (readline.js:337:10)
    at Interface._normalWrite (readline.js:482:12)
    at Socket.ondata (readline.js:194:10)
    at Socket.emit (events.js:315:20)
    at addChunk (internal/streams/readable.js:309:12)
    at readableAddChunk (internal/streams/readable.js:284:9)
    at Socket.Readable.push (internal/streams/readable.js:223:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:188:23)

VS Code version: Code 1.63.0 (7db1a2b, 2021-12-07T06:26:56.179Z)
OS version: Windows_NT x64 10.0.19043
Restricted Mode: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (8 x 3408)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.93GB (1.86GB free)
Process Argv	--folder-uri file:///s%3A/Git/Brainbox/webFrontend --crash-reporter-id b6f906bd-631c-4aac-942e-e7aaf9e31acf
Screen Reader	no
VM	0%

Extensions (3)

Extension	Author (truncated)	Version
vscode-eslint	dba	2.2.2
gitlens	eam	11.7.0
remote-wsl	ms-	0.63.4

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[heng1025]

same issue

[gjsjohnmurray]

/duplicate of #138794