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TS Server fatal error: Debug Failure. False expression. #38789

Closed
@hackers267

Description

@hackers267

Issue Type: Bug

TypeScript Version: 4.0.0-dev.20200525
Steps to reproduce crash
1.
2.
3.
TS Server Error Stack

Error: Debug Failure. False expression.
    at tryReuseStructureFromOldProgram (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:100890:22)
    at Object.createProgram (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:100509:30)
    at synchronizeHostData (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:139751:26)
    at Object.getProgram (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:139843:13)
    at InferredProject.Project.updateGraphWorker (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:144334:53)
    at InferredProject.Project.updateGraph (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:144277:42)
    at ProjectService.assignOrphanScriptInfoToInferredProject (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:146173:25)
    at ProjectService.assignProjectToOpenedScriptInfo (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:147667:26)
    at c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:147924:97
    at Object.flatMap (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:482:25)
    at ProjectService.applyChangesInOpenFiles (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:147924:41)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:148787:46)
    at c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:150550:88
    at IOSession.Session.executeWithRequestId (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:150541:28)
    at IOSession.Session.executeCommand (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:150550:33)
    at IOSession.Session.onMessage (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:150574:35)
    at Interface.<anonymous> (c:\Users\silen\.vscode-insiders\extensions\ms-vscode.vscode-typescript-next-4.0.20200525\node_modules\typescript\lib\tsserver.js:151890:27)
    at Interface.emit (events.js:210:5)
    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:210:5)
    at addChunk (_stream_readable.js:308:12)
    at readableAddChunk (_stream_readable.js:289:11)
    at Socket.Readable.push (_stream_readable.js:223:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:182:23)

Extension version: 4.0.20200525
VS Code version: Code - Insiders 1.46.0-insider (2591ede, 2020-05-22T21:13:15.709Z)
OS version: Windows_NT x64 10.0.19628

System Info
Item Value
CPUs Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8 x 2592)
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
opengl: enabled_on
protected_video_decode: unavailable_off
rasterization: enabled
skia_renderer: disabled_off_ok
video_decode: enabled
viz_display_compositor: enabled_on
webgl: enabled
webgl2: enabled
Load (avg) undefined
Memory (System) 15.91GB (7.32GB free)
Process Argv .
Screen Reader no
VM 0%

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