TS Server fatal error: Debug Failure. False express... | microsoft/TypeScript

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Issue Type: Bug

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

TypeScript Version: 4.3.0-dev.20210302

Steps to reproduce crash

Three (3) VSCode windows open, each using TypeScript
Working through 100+ errors, in one window
Performed npm unlink then npm install ../common just prior to this bug report showing.
Opened a file just after step 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: syntax

Error: Debug Failure. False expression.
    at ProjectService.applyChangesInOpenFiles (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:159733:34)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:160803:46)
    at /Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:162687:88
    at IOSession.Session.executeWithRequestId (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:162678:28)
    at IOSession.Session.executeCommand (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:162687:33)
    at IOSession.Session.onMessage (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:162713:35)
    at Interface.<anonymous> (/Users/scottpage/.vscode-insiders/extensions/ms-vscode.vscode-typescript-next-4.3.20210302/node_modules/typescript/lib/tsserver.js:165398:31)
    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 - Insiders 1.54.0-insider (Universal) (42e27fe5cdc58539dad9867970326a297eb8cacf, 2021-03-02T19:09:42.206Z)
OS version: Darwin x64 20.3.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz (16 x 2400)
GPU Status	2d_canvas: enabled gpu_compositing: enabled metal: disabled_off multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled webgl: enabled webgl2: enabled
Load (avg)	3, 3, 2
Memory (System)	32.00GB (0.47GB free)
Process Argv	--crash-reporter-id a2781316-e190-41d1-8f67-f530cb44e09e
Screen Reader	no
VM	0%

Extensions (28)

Extension	Author (truncated)	Version
vscode-toggle-quotes	Bri	0.3.4
vscode-eslint	dba	2.1.14
gitlens-insiders	eam	2021.3.204
vscode-html-css	ecm	1.10.2
EditorConfig	Edi	0.16.4
auto-rename-tag	for	0.1.6
todo-tree	Gru	0.0.199
vue-snippets	hol	1.0.4
vue	jcb	0.1.5
dotenv	mik	1.0.1
vscode-docker	ms-	1.10.0
vscode-dotnet-runtime	ms-	1.0.0
mssql	ms-	1.10.1
remote-containers	ms-	0.163.0
remote-ssh	ms-	0.64.0
remote-ssh-edit	ms-	0.64.0
remote-wsl	ms-	0.54.0
vscode-remote-extensionpack	ms-	0.20.0
azure-account	ms-	0.9.6
vscode-typescript-next	ms-	4.3.20210302
debugger-for-chrome	msj	4.12.12
vetur	oct	0.33.0
swdc-vscode	sof	2.5.2
electron-tools	tms	1.1.3795
tmswebcore	tms	1.2.4095
omnipascal	Wos	0.18.0
markdown-all-in-one	yzh	3.4.0
html-css-class-completion	Zig	1.20.0

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El punto de entrada indicado es ProjectService.applyChangesInOpenFiles en el stack trace de tsserver.js. Activa el registro detallado de TS Server, reproduce el flujo de trabajo de tres ventanas con npm unlink y npm install ../common, e inspecciona el registro resultante alrededor de la solicitud de syntax-server. Se considera completado cuando el flujo de trabajo ya no produce el fatal Debug Failure.

Escrito por el modelo de indexación a partir del texto del issue.

TS Server fatal error: Debug Failure. False expression.

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