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TS Server fatal error: Cannot read property 'get' of undefined #37938

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@yuenc

Description

@yuenc

Issue Type: Bug

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

TypeError: Cannot read property 'get' of undefined
    at resolveModuleNamesReusingOldState (tsserver.js:98026:92)
    at processImportedModules (tsserver.js:99448:35)
    at findSourceFile (tsserver.js:99191:17)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:99418:21
    at Object.forEach (tsserver.js:167:30)
    at processLibReferenceDirectives (tsserver.js:99413:16)
    at findSourceFile (tsserver.js:99188:21)
    at tsserver.js:99020:85
    at getSourceFileFromReferenceWorker (tsserver.js:98987:34)
    at processSourceFile (tsserver.js:99020:13)
    at processRootFile (tsserver.js:98843:13)
    at tsserver.js:97809:60
    at Object.forEach (tsserver.js:167:30)
    at Object.createProgram (tsserver.js:97809:16)
    at synchronizeHostData (tsserver.js:135218:26)
    at Proxy.getProgram (tsserver.js:135310:13)
    at InferredProject.Project.updateGraphWorker (tsserver.js:139786:53)
    at InferredProject.Project.updateGraph (tsserver.js:139729:42)
    at updateProjectIfDirty (tsserver.js:141076:45)
    at Array.forEach (<anonymous>)
    at ProjectService.assignProjectToOpenedScriptInfo (tsserver.js:143127:41)
    at tsserver.js:143396:107
    at Object.mapDefined (tsserver.js:562:30)
    at ProjectService.applyChangesInOpenFiles (tsserver.js:143396:48)
    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 1.44.0 (2aae1f26c72891c399f860409176fe435a154b13, 2020-04-07T23:31:18.860Z)
OS version: Windows_NT x64 10.0.18363

System Info
Item Value
CPUs Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz (6 x 2808)
GPU Status 2d_canvas: enabled
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
oop_rasterization: disabled_off
protected_video_decode: enabled
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) undefined
Memory (System) 15.87GB (9.90GB free)
Process Argv
Screen Reader no
VM 0%
Extensions (9)
Extension Author (truncated) Version
vscode-deno axe 3.5.1
vscode-wasm dts 1.3.1
code-runner for 0.9.17
toml-formatter ice 0.0.3
vscode-wasm-syntax-lite jcm 0.3.0
rust-analyzer mat 0.2.117
remote-ssh ms- 0.51.0
remote-ssh-edit ms- 0.51.0
crates ser 0.4.9

(1 theme extensions excluded)

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BugA bug in TypeScriptFix AvailableA PR has been opened for this issueRescheduledThis issue was previously scheduled to an earlier milestoneVS Code PriorityCritical issues that VS Code needs fixed in the current TypeScript milestone

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