TS Server fatal error: Debug Failure. False expression.

[OscarBarrett]

TypeScript Version: 3.9.4, 4.0.0-dev.20200629

Search Terms:
Debug Failure. False expression.

Code

It crashes as soon as I type a single character.

3.9.4 stack trace:

[2020-06-30 11:11:15.326] [exthost] [error] Error: <semantic> TypeScript Server Error (3.9.4)
Debug Failure. False expression.
Error: Debug Failure. False expression.
    at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:122505:34
    at Object.forEach (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:167:30)
    at getSymbolKindOfConstructorPropertyMethodAccessorFunctionOrVar (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:122499:48)
    at Object.getSymbolKind (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:122429:26)
    at createCompletionEntry (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:112333:40)
    at getCompletionEntriesFromSymbols (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:112379:29)
    at completionInfoFromData (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:112218:17)
    at Object.getCompletionsAtPosition (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:112172:28)
    at Proxy.getCompletionsAtPosition (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:138870:35)
    at IOSession.Session.getCompletions (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:148949:64)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:147886:61)
    at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:149526:88
    at IOSession.Session.executeWithRequestId (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:149517:28)
    at IOSession.Session.executeCommand (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:149526:33)
    at IOSession.Session.onMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:149550:35)
    at Interface.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:150866:27)
    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)
	at Function.create (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:54700)
	at e.dispatchResponse (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:226420)
	at e.dispatchMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:225338)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:224814
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:46:242)
	at t.Reader.onLengthData (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:233476)
	at Socket.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:233124)
	at Socket.emit (events.js:203:13)
	at Socket.EventEmitter.emit (domain.js:476:20)
	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)

4.0.0-dev stack trace:

[2020-06-30 11:15:51.258] [exthost] [error] Error: <semantic> TypeScript Server Error (4.0.0-dev.20200629)
Debug Failure. False expression.
Error: Debug Failure. False expression.
    at /Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:125196:34
    at Object.forEach (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:183:30)
    at getSymbolKindOfConstructorPropertyMethodAccessorFunctionOrVar (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:125190:48)
    at Object.getSymbolKind (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:125120:26)
    at createCompletionEntry (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:114922:40)
    at getCompletionEntriesFromSymbols (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:114969:29)
    at completionInfoFromData (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:114807:17)
    at Object.getCompletionsAtPosition (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:114761:28)
    at Object.getCompletionsAtPosition (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:142644:35)
    at IOSession.Session.getCompletions (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153055:64)
    at Session.handlers.ts.createMapFromTemplate._a.<computed> (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:151977:61)
    at /Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153634:88
    at IOSession.Session.executeWithRequestId (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153625:28)
    at IOSession.Session.executeCommand (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153634:33)
    at IOSession.Session.onMessage (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:153658:35)
    at Interface.<anonymous> (/Users/user/.vscode/extensions/ms-vscode.vscode-typescript-next-4.0.20200629/node_modules/typescript/lib/tsserver.js:155873:27)
    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)
	at Function.create (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:54700)
	at e.dispatchResponse (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:226420)
	at e.dispatchMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:225338)
	at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:224814
	at e.fire (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:46:242)
	at t.Reader.onLengthData (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:233476)
	at Socket.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/typescript-language-features/dist/extension.js:1:233124)
	at Socket.emit (events.js:203:13)
	at Socket.EventEmitter.emit (domain.js:476:20)
	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)

[RyanCavanaugh]

Do you have a project that reproduces the error?

[OscarBarrett]

I've found the cause in the project that I noticed this crash on - it happens if any file imports from isomorphic-sentry.

Minimal reproduction here: https://github.com/OscarBarrett/tsserver-issue-39338

[minestarks]

@RyanCavanaugh we got an internal repro at https://github.com/microsoft/tsserverfuzzer/issues/287

[andrewbranch]

Also repros on intl-tel-input on DefinitelyTyped: DefinitelyTyped/DefinitelyTyped#49077