Typescript: Debug Failure. Symbol parent was undefined.

Created on 16 Sep 2020  路  12Comments  路  Source: microsoft/TypeScript

TS Template added by @mjbvz

TypeScript Version: 4.1.0-dev.20200921

Search Terms

  • Completion
  • suggestions




  • VSCode Version: 1.49.0 (user setup)
  • OS Version: Windows_NT x64 10.0.19041

Steps to Reproduce:

In any *.ts or *.js file, when I try to use auto-completion for eg console by typing con and then pressing [STRG]+[SPACE] I'm not prompted with the expected console. However: once I completed typing console I get suggestions for console's members.

Looking at the "Log (Extension Host)" I see the following error:

[2020-09-16 04:49:13.048] [exthost] [error] [vscode.typescript-language-features] provider FAILED
[2020-09-16 04:49:13.049] [exthost] [error] Error: <semantic> TypeScript Server Error (4.0.2)
Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
Error: Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
    at getSymbolParentOrFail (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:113347:25)
    at Object.getNameForExportedSymbol (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:113340:61)
    at pushSymbol (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:116339:40)
    at c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:116323:28
    at Map.forEach (<anonymous>)
    at getSymbolsFromOtherSourceFileExports (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:116321:54)
    at getGlobalCompletions (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:116082:49)
    at tryGetGlobalSymbols (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:115993:25)
    at getCompletionData (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:115787:22)
    at Object.getCompletionsAtPosition (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:115129:34)
    at Proxy.getCompletionsAtPosition (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:143481:35)
    at IOSession.Session.getCompletions (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154320:64)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:153204:61)
    at c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154953:88
    at IOSession.Session.executeWithRequestId (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154944:28)
    at IOSession.Session.executeCommand (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154953:33)
    at IOSession.Session.onMessage (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:154977:35)
    at Interface.<anonymous> (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\node_modules\typescript\lib\tsserver.js:157193:27)
    at Interface.emit (events.js:223:5)
    at Interface._onLine (readline.js:315:10)
    at Interface._normalWrite (readline.js:460:12)
    at Socket.ondata (readline.js:172:10)
    at Socket.emit (events.js:223:5)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:181:23)
    at Function.create (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:1:76465)
    at h.dispatchResponse (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:1:70340)
    at h.dispatchMessage (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:1:69199)
    at c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:1:68709
    at l.fire (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:46:475)
    at g.onLengthData (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:45:60018)
    at Socket.<anonymous> (c:\Users\henning\AppData\Local\Programs\Microsoft VS Code\resources\app\extensions\typescript-language-features\dist\extension.js:45:59666)
    at Socket.emit (events.js:223:5)
    at addChunk (_stream_readable.js:309:12)
    at readableAddChunk (_stream_readable.js:290:11)
    at Socket.Readable.push (_stream_readable.js:224:10)
    at Pipe.onStreamRead (internal/stream_base_commons.js:181:23)

However: for a split second, this seems to work alright - maybe before the internal initialization of some vscode routine complete?


Does this issue occur when all extensions are disabled?: Yes

Bug Crash Completion Lists Fix Available
Source
picture nyn3x
👍2

Most helpful comment

It seems this issue https://github.com/microsoft/TypeScript/issues/40355 is related. I a little bit investigated it and ran into this crash. I used the following test to reproduce the issue

/// <reference path='fourslash.ts'/>

// @esModuleInterop: true
// @moduleResolution: node
// @target: es2015
// @module: esnext

// @Filename: /node_modules/@bar/foo/index.d.ts
//// export = Foo;
//// declare class Foo {}
//// declare namespace Foo {}  // class/namespace declaration causes the issue

// @Filename: /node_modules/foo/index.d.ts
//// import * as Foo from "@bar/foo";
//// export = Foo;

// @Filename: /index.ts
//// import Foo from "foo";
//// /**/

goTo.file("/index.ts");
verify.completions({
    marker: "",
    includes: ["Foo"],
    preferences: {
        includeCompletionsForModuleExports: true
    }
});

Error: Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
      at getSymbolParentOrFail (src/services/utilities.ts:2885:22)
      at Object.getNameForExportedSymbol (src/services/utilities.ts:2879:58)
      at pushSymbol (src/services/completions.ts:1727:33)
      at /TypeScript/src/services/completions.ts:1711:106
      at Map.forEach (<anonymous>)
      at getSymbolsFromOtherSourceFileExports (src/services/completions.ts:1711:50)
     ...

At first glance, the crash occurs because of resolvedModuleSymbol returns symbol without a parent, which is required in getSymbolParentOrFail.

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/completions.ts#L1658

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/completions.ts#L1727

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/utilities.ts#L2879

cc @DanielRosenwasser @sheetalkamat

picture a-tarasyuk on 22 Sep 2020
👍2

All 12 comments

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

vscodebot[bot] picture vscodebot[bot] on 16 Sep 2020

None of the suggested "duplicates" seem to be related to code-completion.

nyn3x picture nyn3x on 16 Sep 2020

Can you share the project or at least the file the caused this error?

mjbvz picture mjbvz on 16 Sep 2020

I've create a stripped version of one of my projects, where this behavior occurs. You can check it out at https://github.com/nyn3x/vscode-autocomplete-error

If you go to the Home.tsx and try to access the imported log function typing just lo doesn't offer the imported log function; instead I get the error shown above.

nyn3x picture nyn3x on 20 Sep 2020

Thanks. I confirmed the crash.

Here's the stack from TypeScript 4.1.0-dev.20200921:

<semantic> TypeScript Server Error (4.1.0-dev.20200921)
Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
Error: Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
    at getSymbolParentOrFail (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:114958:25)
    at Object.getNameForExportedSymbol (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:114951:61)
    at pushSymbol (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:118252:40)
    at /Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:118236:28
    at Map.forEach (<anonymous>)
    at getSymbolsFromOtherSourceFileExports (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:118234:54)
    at getGlobalCompletions (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:117995:49)
    at tryGetGlobalSymbols (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:117906:25)
    at getCompletionData (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:117693:22)
    at Object.getCompletionsAtPosition (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:117013:34)
    at Proxy.getCompletionsAtPosition (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:145573:35)
    at Proxy.<anonymous> (/Users/matb/.vscode-insiders/extensions/jpoissonnier.vscode-styled-components-0.0.31/node_modules/typescript-template-language-service-decorator/lib/template-language-service-decorator.js:84:24)
    at IOSession.Session.getCompletions (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:156424:64)
    at Session.handlers.ts.Map.ts.getEntries._a.<computed> (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:155308:61)
    at /Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:157058:88
    at IOSession.Session.executeWithRequestId (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:157049:28)
    at IOSession.Session.executeCommand (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:157058:33)
    at IOSession.Session.onMessage (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:157082:35)
    at Interface.<anonymous> (/Users/matb/projects/san/vscode-autocomplete-error/node_modules/typescript/lib/tsserver.js:159298:27)
    at Interface.emit (events.js:223:5)
    at Interface._onLine (readline.js:315:10)
mjbvz picture mjbvz on 22 Sep 2020
👍2

It seems this issue https://github.com/microsoft/TypeScript/issues/40355 is related. I a little bit investigated it and ran into this crash. I used the following test to reproduce the issue

/// <reference path='fourslash.ts'/>

// @esModuleInterop: true
// @moduleResolution: node
// @target: es2015
// @module: esnext

// @Filename: /node_modules/@bar/foo/index.d.ts
//// export = Foo;
//// declare class Foo {}
//// declare namespace Foo {}  // class/namespace declaration causes the issue

// @Filename: /node_modules/foo/index.d.ts
//// import * as Foo from "@bar/foo";
//// export = Foo;

// @Filename: /index.ts
//// import Foo from "foo";
//// /**/

goTo.file("/index.ts");
verify.completions({
    marker: "",
    includes: ["Foo"],
    preferences: {
        includeCompletionsForModuleExports: true
    }
});

Error: Debug Failure. Symbol parent was undefined. Flags: ExportDoesNotSupportDefaultModifier|Alias|AliasExcludes|ModuleMember|Classifiable|Transient. Declarations: undefined.
      at getSymbolParentOrFail (src/services/utilities.ts:2885:22)
      at Object.getNameForExportedSymbol (src/services/utilities.ts:2879:58)
      at pushSymbol (src/services/completions.ts:1727:33)
      at /TypeScript/src/services/completions.ts:1711:106
      at Map.forEach (<anonymous>)
      at getSymbolsFromOtherSourceFileExports (src/services/completions.ts:1711:50)
     ...

At first glance, the crash occurs because of resolvedModuleSymbol returns symbol without a parent, which is required in getSymbolParentOrFail.

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/completions.ts#L1658

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/completions.ts#L1727

https://github.com/microsoft/TypeScript/blob/7c6462aa10329884618c51ff9af76c66b503f47c/src/services/utilities.ts#L2879

cc @DanielRosenwasser @sheetalkamat

a-tarasyuk picture a-tarasyuk on 22 Sep 2020
👍2

I can confirm I'm having the same problem with TypeScript v.4.0.x in my VSCode. I have to stick to v.3.9.7 for now unless there's a workaround?

petercherm picture petercherm on 24 Sep 2020

Hmm - but that doesn't seem to work for me. I changed in the package.json the typescript to "^3.9.7" and then set the typescript-sdk to the local workspace. But still I get

[2020-09-24 10:01:54.221] [exthost] [error] [vscode.typescript-language-features] provider FAILED
[2020-09-24 10:01:54.222] [exthost] [error] Error: <semantic> TypeScript Server Error (3.9.7)
Debug Failure.
Error: Debug Failure.
    at Object.getNameForExportedSymbol (C:\projects\playground\vscode-ts-error\broken\node_modules\.pnpm\[email protected]\node_modules\typescript\lib\tsserver.js:110423:70)
nyn3x picture nyn3x on 24 Sep 2020

Hmm - but that doesn't seem to work for me. I changed in the package.json the typescript to "^3.9.7" and then set the typescript-sdk to the local workspace. But still I get

Hmm... interesting, 3.9.7 works for me, it doesn't throw that error and the suggestions work. Interestingly, when I tried a fresh project (I use Next.js), there was no error at all with 4.0.2, so I'm suspecting one of the dependencies in my project may be causing that issue...

petercherm picture petercherm on 24 Sep 2020
👎1

maybe - I did upload a sample-project, which shows this error ...

It seems that "esModuleInterop": true in the tsconfig.json is causing this error. Switching this to false seems to remove this error.

However - why did I include this setting in my project? I guess it was, so I don't get errors when doing import React from "react"; as I didn't want to write import * as React from "react";

nyn3x picture nyn3x on 24 Sep 2020

The problem is in "esModuleInterop": true I try with all TypeScript versions but all with same error.
Disabling esModuleInterop all work fine

carmas123 picture carmas123 on 9 Oct 2020

I'm having the same problem with a nextJS project. When i disable esModuleInterop it works.

lorenzorapetti picture lorenzorapetti on 9 Oct 2020
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