TS Server fatal error: Debug Failure. False expression.

[JohnOzBrett]

We have written the needed
Issue Type: Bug

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

TypeScript Version: 4.1.0-dev.20200811

Steps to reproduce crash

1. try to build project

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

Error: Debug Failure. False expression.
    at bindThisPropertyAssignment (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:41337:22)
    at bindWorker (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:41029:37)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40899:13)
    at bindExpressionStatement (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39964:13)
    at bindChildren (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39450:21)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40910:21)
    at c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39391:94
    at Object.forEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:188:30)
    at bindEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39398:16)
    at bindEachFunctionsFirst (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39391:13)
    at bindChildren (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39496:21)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40910:21)
    at visitNode (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:26832:24)
    at Object.forEachChild (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:26962:21)
    at bindEachChild (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39401:16)
    at bindChildren (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39499:21)
    at bindContainer (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39348:17)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40913:21)
    at Object.forEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:188:30)
    at bindEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39398:16)
    at visitNodes (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:26837:24)
    at Object.forEachChild (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:27152:21)
    at bindEachChild (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39401:16)
    at bindChildren (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39499:21)
    at bindContainer (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39383:17)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40913:21)
    at c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39391:94
    at Object.forEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:188:30)
    at bindEach (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39398:16)
    at bindEachFunctionsFirst (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39391:13)
    at bindChildren (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39490:21)
    at bindContainer (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:39348:17)
    at bind (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:40913:21)
    at bindSourceFile (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:38976:17)
    at Object.bindSourceFile (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:38916:9)
    at initializeTypeChecker (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:76465:20)
    at Object.createTypeChecker (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:42923:9)
    at Object.getTypeChecker (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:103469:79)
    at synchronizeHostData (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:143443:21)
    at Proxy.getProgram (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:143525:13)
    at ConfiguredProject.Project.updateGraphWorker (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:148382:53)
    at ConfiguredProject.Project.updateGraph (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:148315:42)
    at ConfiguredProject.updateGraph (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:149249:63)
    at ProjectService.createLoadAndUpdateConfiguredProject (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:150953:25)
    at ProjectService.assignProjectToOpenedScriptInfo (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:151860:44)
    at c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:152187:97
    at Object.flatMap (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:513:25)
    at ProjectService.applyChangesInOpenFiles (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:152187:41)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:153206:46)
    at c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:155078:88
    at IOSession.Session.executeWithRequestId (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:155069:28)
    at IOSession.Session.executeCommand (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:155078:33)
    at IOSession.Session.onMessage (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:155102:35)
    at Interface.<anonymous> (c:\Users\John\.vscode\extensions\ms-vscode.vscode-typescript-next-4.1.20200811\node_modules\typescript\lib\tsserver.js:157318:27)
    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 1.47.3 (91899dcef7b8110878ea59626991a18c8a6a1b3e, 2020-07-23T13:12:49.994Z)
OS version: Windows_NT x64 10.0.18362

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz (4 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 protected_video_decode: unavailable_off 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)	15.86GB (8.28GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (6)

Extension	Author (truncated)	Version
vscode-jasmine-test-runner	Dmi	0.1.1
prettier-vscode	esb	5.1.3
todo-tree	Gru	0.0.178
vscode-jasmine-test-adapter	hbe	1.7.0
vscode-test-explorer	hbe	2.19.1
vscode-typescript-next	ms-	4.1.20200811

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[mjbvz]

Can you share the project that causes this?

[JohnOzBrett]

Hi Matt, Unfortunately I won't be able to share the entire workspace, as that's company confidential. I can certainly try to narrow down which part might be causing the issue if you can give me any indicators like paths or filenames. I've since dropped off using the overnight builds of Typescript and am back on 3.9.7, which has been stable. John

…

On Mon, 17 Aug 2020 at 22:39, Matt Bierner ***@***.***> wrote: Can you share the project that causes this? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#40098 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/APA7ATC26G36GR7B72EPQHDSBGPSPANCNFSM4QCIISYA> .

[DanielRosenwasser]

Does this repro on 4.1.0-dev.20200810 or 4.1.0-dev.20200809?

[DanielRosenwasser]

Slightly suspicious that this might be related to #39908.

[JohnOzBrett]

Hi Daniel, I tried switching my project to 4.1.0-dev.20200809 - I didn't see the problem with intellisense, but my Angular build broke. I then re-enabled the Typescript/nightly extension, which used 4.1.0-dev.20200818, which also didn't cause the problem with intellisense. So - good news for me in that I'm back using the nightly typescript build. Sorry that it's not quite so clear-cut for you, but from my point of view it does look like you'd already fixed whatever was going wrong. Thanks, John

…

On Wed, 19 Aug 2020 at 02:07, Daniel Rosenwasser ***@***.***> wrote: Does this repro on 4.1.0-dev.20200810 or 4.1.0-dev.20200809? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.