VS Code - TypeScript Server Error - Type check, auto complete, etc. stops working preiodically

[AnyhowStep]

TypeScript Version: 3.5.1

Search Terms:

typescript server error, debug failure

Code

I seem to get two kinds of error messages in the VS Code developer tools,

ERR TypeScript Server Error (3.5.1)
Debug Failure. Expected 26789 <= 24601
Error: Debug Failure. Expected 26789 <= 24601
    at Object.assertLessThanOrEqual (tsserver.js:2059:17)
    at Object.createFileDiagnostic (tsserver.js:15141:22)
    at getRangeToExtract (tsserver.js:118016:42)
    at Object.getAvailableActions (tsserver.js:117879:38)
    at tsserver.js:112870:128
    at getIterator (tsserver.js:627:23)
    at Object.next (tsserver.js:622:35)
    at Object.arrayFrom (tsserver.js:1255:32)
    at Object.getApplicableRefactors (tsserver.js:112869:23)
    at Object.getApplicableRefactors (tsserver.js:122632:32)
    at IOSession.Session.getApplicableRefactors (tsserver.js:131393:53)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:130211:61)
    at tsserver.js:131637:88
    at IOSession.Session.executeWithRequestId (tsserver.js:131628:28)
    at IOSession.Session.executeCommand (tsserver.js:131637:33)
    at IOSession.Session.onMessage (tsserver.js:131659:35)
    at Interface.<anonymous> (tsserver.js:132950:27)
    at Interface.emit (events.js:182:13)
    at Interface._onLine (readline.js:290:10)
    at Interface._normalWrite (readline.js:433:12)
    at Socket.ondata (readline.js:149:10)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at Pipe.onread (net.js:636:20): Error: TypeScript Server Error (3.5.1)
Debug Failure. Expected 26789 <= 24601
Error: Debug Failure. Expected 26789 <= 24601
    at Object.assertLessThanOrEqual (tsserver.js:2059:17)
    at Object.createFileDiagnostic (tsserver.js:15141:22)
    at getRangeToExtract (tsserver.js:118016:42)
    at Object.getAvailableActions (tsserver.js:117879:38)
    at tsserver.js:112870:128
    at getIterator (tsserver.js:627:23)
    at Object.next (tsserver.js:622:35)
    at Object.arrayFrom (tsserver.js:1255:32)
    at Object.getApplicableRefactors (tsserver.js:112869:23)
    at Object.getApplicableRefactors (tsserver.js:122632:32)
    at IOSession.Session.getApplicableRefactors (tsserver.js:131393:53)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:130211:61)
    at tsserver.js:131637:88
    at IOSession.Session.executeWithRequestId (tsserver.js:131628:28)
    at IOSession.Session.executeCommand (tsserver.js:131637:33)
    at IOSession.Session.onMessage (tsserver.js:131659:35)
    at Interface.<anonymous> (tsserver.js:132950:27)
    at Interface.emit (events.js:182:13)
    at Interface._onLine (readline.js:290:10)
    at Interface._normalWrite (readline.js:433:12)
    at Socket.ondata (readline.js:149:10)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at Pipe.onread (net.js:636:20)
	at Function.create (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:173406)
	at v.dispatchResponse (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:178712)
	at v.dispatchMessage (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:177464)
	at constructor._reader.onData.e (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:176820)
	at u.fire (/usr/share/code/resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:43:254)
	at t.Reader.onLengthData (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:182680)
	at Socket.t.Reader.constructor.e.on.e (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:182328)
	at Socket.emit (events.js:182:13)
	at addChunk (_stream_readable.js:279:12)
	at readableAddChunk (_stream_readable.js:264:11)
	at Socket.Readable.push (_stream_readable.js:219:10)
	at Pipe.onread (net.js:636:20)

And,

TypeScript Server Error (3.5.1)
Debug Failure. False expression.
Error: Debug Failure. False expression.
    at tryReuseStructureFromOldProgram (tsserver.js:89636:22)
    at Object.createProgram (tsserver.js:89289:34)
    at synchronizeHostData (tsserver.js:121943:26)
    at Object.getProgram (tsserver.js:122035:13)
    at ConfiguredProject.Project.updateGraphWorker (tsserver.js:126284:53)
    at ConfiguredProject.Project.updateGraph (tsserver.js:126228:42)
    at ConfiguredProject.updateGraph (tsserver.js:126723:63)
    at Object.updateProjectIfDirty (tsserver.js:127081:45)
    at ConfiguredProject.Project.getLanguageService (tsserver.js:125915:28)
    at IOSession.Session.getCompletions (tsserver.js:131119:43)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:130069:61)
    at tsserver.js:131637:88
    at IOSession.Session.executeWithRequestId (tsserver.js:131628:28)
    at IOSession.Session.executeCommand (tsserver.js:131637:33)
    at IOSession.Session.onMessage (tsserver.js:131659:35)
    at Interface.<anonymous> (tsserver.js:132950:27)
    at Interface.emit (events.js:182:13)
    at Interface._onLine (readline.js:290:10)
    at Interface._normalWrite (readline.js:433:12)
    at Socket.ondata (readline.js:149:10)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at Pipe.onread (net.js:636:20): Error: TypeScript Server Error (3.5.1)
Debug Failure. False expression.
Error: Debug Failure. False expression.
    at tryReuseStructureFromOldProgram (tsserver.js:89636:22)
    at Object.createProgram (tsserver.js:89289:34)
    at synchronizeHostData (tsserver.js:121943:26)
    at Object.getProgram (tsserver.js:122035:13)
    at ConfiguredProject.Project.updateGraphWorker (tsserver.js:126284:53)
    at ConfiguredProject.Project.updateGraph (tsserver.js:126228:42)
    at ConfiguredProject.updateGraph (tsserver.js:126723:63)
    at Object.updateProjectIfDirty (tsserver.js:127081:45)
    at ConfiguredProject.Project.getLanguageService (tsserver.js:125915:28)
    at IOSession.Session.getCompletions (tsserver.js:131119:43)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:130069:61)
    at tsserver.js:131637:88
    at IOSession.Session.executeWithRequestId (tsserver.js:131628:28)
    at IOSession.Session.executeCommand (tsserver.js:131637:33)
    at IOSession.Session.onMessage (tsserver.js:131659:35)
    at Interface.<anonymous> (tsserver.js:132950:27)
    at Interface.emit (events.js:182:13)
    at Interface._onLine (readline.js:290:10)
    at Interface._normalWrite (readline.js:433:12)
    at Socket.ondata (readline.js:149:10)
    at Socket.emit (events.js:182:13)
    at addChunk (_stream_readable.js:279:12)
    at readableAddChunk (_stream_readable.js:264:11)
    at Socket.Readable.push (_stream_readable.js:219:10)
    at Pipe.onread (net.js:636:20)
	at Function.create (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:173406)
	at v.dispatchResponse (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:178712)
	at v.dispatchMessage (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:177464)
	at constructor._reader.onData.e (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:176820)
	at u.fire (/usr/share/code/resources/app/out/vs/workbench/services/extensions/node/extensionHostProcess.js:43:254)
	at t.Reader.onLengthData (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:182680)
	at Socket.t.Reader.constructor.e.on.e (/usr/share/code/resources/app/extensions/typescript-language-features/dist/extension.js:1:182328)
	at Socket.emit (events.js:182:13)
	at addChunk (_stream_readable.js:279:12)
	at readableAddChunk (_stream_readable.js:264:11)
	at Socket.Readable.push (_stream_readable.js:219:10)
	at Pipe.onread (net.js:636:20)

The log just gets spammed continuously.

Expected behavior:

Type check, auto complete, etc. should consistently work

Actual behavior:

When I restart VS code, everything works fine.

Then, a while later (seconds/minutes; usually minutes), it just stops working and I get errors in the VS code developer tools console tab. If I restart VS code ("Reload window"), everything works fine again for a while, until those errors come back.

tsc works fine.

tsc -b -w works fine.

The project I'm working on is a composite project with 30+ sub-projects.

Version: 1.32.3
Commit: a3db5be9b5c6ba46bb7555ec5d60178ecc2eaae4
Date: 2019-03-14T23:38:49.842Z
Electron: 3.1.6
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Linux x64 4.18.0-20-generic

Not sure what other information I should provide.

---

It's kind of hard for me to reproduce the issue at will. I'm just writing a bunch of tests and every now and then, things just stop working.

Playground Link: None

Related Issues:

No idea, maybe #30546 ?

But the logs seem very different.

[sheetalkamat]

@AnyhowStep Can you please turn on the tsserver log and when the issue reproduces share the complete log. That would make investigating this easier since from your description it happens only certain times, it feels like the action sequence might help what went wrong. If you want to share tsserver log more privately here are the steps.

1. With "typescript.tsserver.log": "verbose" enabled
2. Restart vscode or vscode insiders
3. Reproduce the problem
4. You can share the logs using
   • either by sharing logs in the folder that gets opened by running open tsserver log from command palette
     or
   • Run code --upload-logs on the command line (or code-insiders --upload-logs if using vscode insiders) and follow instructions and Then share the log file ID

[AnyhowStep]

I ran code --upload-logs and it told me to review the ~/.config/Code/logs/20190530T202503 directory.

However, when I run open tsserver log, it opens ~/.config/Code/logs/20190615T191737/exthost84/vscode.typescript-language-features/tsserver-log-Z1gGqW and contains tsserver.log, ti-28173.log

The timestamps seem different.

• 20190530T202503
• 20190615T191737

Do I just use code --upload-logs anyway? Is there a way to get code to upload the directory open tsserver log shows me?

[AnyhowStep]

@sheetalkamat

Upload successful! Log file ID: 861168024