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TS Server fatal error: Maximum call stack size exceeded #51162

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Open
TS Server fatal error: Maximum call stack size exceeded#51162
Assignees
navya9singh
Labels
BugA bug in TypeScriptDomain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedRescheduledThis issue was previously scheduled to an earlier milestone
Milestone
TypeScript 5.7.0

Description

@shuckster
Conan (shuckster)
opened on Oct 13, 2022

Type: Bug

Hope I've provided enough information below. The bug manifests as a notification with the text:

The JS/TS language service immediately crashed 5 times. The service will not be restarted.

Observed in VS Code versions:

  • Version: 1.72.1 (Universal)
  • Commit: 129500ee4c8ab7263461ffe327268ba56b9f210d
  • Date: 2022-10-10T17:25:13.482Z (2 days ago)

And:

  • Version: 1.73.0-insider (Universal)
  • Commit: a810804
  • Date: 2022-10-13T05:19:29.769Z (6 hrs ago)

Problem persists when code --disable-extensions is run on either version.

Report below was generated from Insiders release

TypeScript Version: 4.8.4

Steps to reproduce crash

  1. Open VS Code
  2. Open Folder
  3. Open JavaScript file
  4. The JS/TS language services crashes

TS Server Log

https://gist.github.com/shuckster/f56477f7b3fdf1686214c2c8c8309c50

Personal/Company info redacted, but codebase is a mix of both JavaScript and Flow-typed JavaScript.

TS Server Error Stack
Server: semantic

RangeError: Maximum call stack size exceeded
    at Object.scanJsxToken (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:12041:30)
    at scanJsxText (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:32328:43)
    at parseJsxOpeningOrSelfClosingElementOrOpeningFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35663:17)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35527:27)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)
    at parseJsxChild (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35617:28)
    at parseJsxChildren (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35628:29)
    at parseJsxElementOrSelfClosingElementOrFragment (/Applications/Visual Studio Code - Insiders.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35530:32)

VS Code version: Code - Insiders 1.73.0-insider (Universal) (a810804, 2022-10-13T05:19:29.769Z)
OS version: Darwin arm64 21.6.0
Modes:
Sandboxed: Yes

System Info
Item Value
CPUs Apple M1 Pro (10 x 24)
GPU Status 2d_canvas: enabled
canvas_oop_rasterization: disabled_off
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
metal: disabled_off
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_renderer: enabled_on
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: disabled_off
Load (avg) 8, 7, 5
Memory (System) 32.00GB (6.14GB free)
Process Argv
Screen Reader no
VM 0%
Extensions: none
A/B Experiments 
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Activity

  1. VS Code Bot (vscodenpa)
    assigned
    Matt Bierner (mjbvz)
    on Oct 13, 2022
  2. Matt Bierner (mjbvz)
    transferred this issue frommicrosoft/vscodeon Oct 13, 2022
  3. Matt Bierner (mjbvz)
    removed their assignment
    on Oct 13, 2022

  4. mjbvz commented on Oct 13, 2022

    @mjbvz
    Matt Bierner (mjbvz)
    on Oct 13, 2022
    Contributor

    Thanks Conan (@shuckster)

    Can you share the contents of babel.config.aliases.js since this seems to be the file that causes problems?

  5. shuckster commented on Oct 13, 2022

    @shuckster
    Conan (shuckster)
    on Oct 13, 2022
    Author

    Hey Matt Bierner (@mjbvz) , thanks for the quick reply.

    Content posted below, although I must say the server crashes when I choose any JavaScript file, not just this one:

    //
// If you add new aliases please update the ones for Flow, too.
// Running the following will do it automatically based on the
// content of this file:
//
// - npm run flow:update:aliases
//
const aliases = {
  _Assets: './src/shared/assets/',
  _Container: './src/shared/components/container/',
  _Quarks: './src/shared/components/presentational/1-quarks/',
  _Atoms: './src/shared/components/presentational/2-atoms/',
  _Molecules: './src/shared/components/presentational/3-molecules/',
  _Organisms: './src/shared/components/presentational/4-organisms/',
  _Hooks: './src/shared/hooks/',
  _Query: './src/shared/query/',

  _Config: './src/shared/config/',
  _Mock: './src/shared/mock/',
  _SuperagentMock: './src/shared/mock/super-agent-mock/',
  _Scss: './src/shared/scss/',
  _Types: './src/shared/types/',
  _Utils: './src/shared/utils/',
  _Constants: './src/shared/utils/constants/',

  _Common: './src/apps/common/',
  _LtdRole: './src/apps/ltd-role/',
  _StandardRole: './src/apps/standard-role/',

  _Features: './src/features/',
  _CommonFeatures: './src/apps/common/features/',
  _LtdFeatures: './src/apps/ltd-role/features/',
  _StandardFeatures: './src/apps/standard-role/features/',

  _Test: './test/',

  _Banking: './src/apps/ltd-role/features/banking/',
  _Sales: './src/apps/ltd-role/features/sales/',
  _SelfAssessment: './src/apps/ltd-role/features/self-assessment/',
  _Expenses: './src/apps/ltd-role/features/expenses/',
  _Subscription: './src/apps/ltd-role/features/subscription/',
  _ConfirmationStatement: './src/apps/ltd-role/features/confirmation-statement/',
  _Settings: './src/apps/ltd-role/features/settings/',
  _AddOns: './src/apps/ltd-role/features/add-ons/',
}

module.exports = {
  aliases,
}
  6. Ryan Cavanaugh (RyanCavanaugh)
    added
    Needs More InfoThe issue still hasn't been fully clarified
    on Oct 13, 2022

  7. RyanCavanaugh commented on Oct 13, 2022

    @RyanCavanaugh
    Ryan Cavanaugh (RyanCavanaugh)
    on Oct 13, 2022
    Member

    Based on the call stack, that file must not be the culprit.

    There is (at least) one file in your repro which should equivalently crash tsc if you run

    tsc --noResolve --noEmit --allowJs filename.js

    You can ignore non-crash errors emitted by this check

    Can you post that file (or a shortened version of it that still crashes)?

  8. shuckster commented on Oct 13, 2022

    @shuckster
    Conan (shuckster)
    on Oct 13, 2022
    Author

    Thank you Ryan Cavanaugh (@RyanCavanaugh) for this.

    I wasn't able to get an answer from tsc, but your advice did prompt me to create a new repo and copy over files/folders until I got Intellisense to crash.

    I managed to narrow it down to the following file:

    https://github.com/flow-typed/flow-typed/blob/master/definitions/npm/lodash_v4.x.x/flow_v0.155.x-/lodash_v4.x.x.js

    Of course, this is a flow-typed definition and so I presume out-of-scope for a TypeScript fix. However, I did narrow-down the crash to somewhere around here.

    Still, the proper solution in my case was to add the /flow-typed/ folder to my jsconfig.json:

    {
  "exclude": ["./flow-typed"],
  "compilerOptions": {
    ...
  }
}

    This has allowed Intellisense to restart successfully after running "Developer: Restart Extension Host" from the Command Palette.

  9. shuckster commented on Oct 13, 2022

    @shuckster
    Conan (shuckster)
    on Oct 13, 2022
    Author

    I presume this is unlikely to affect the outcome of this issue, but just to follow-up: Opening lodash_v4.x.x.js in a new editor, then running "Developer: Restart Extension Host", will also cause the crash even after adding ./flow-typed to exclude in the jsconfig.json file.

  10. RyanCavanaugh commented on Oct 13, 2022

    @RyanCavanaugh
    Ryan Cavanaugh (RyanCavanaugh)
    on Oct 13, 2022
    Member

    Oh my. Yeah, unfortunately given the syntax here, TS parses it thinking it's a massively-nested JSX expression, starting here and continuing to deepen the stack at ~every <T> that follows.

       findIndex:
      & (<T>(
        array: $ReadOnlyArray<T>,
        predicate?: ?Predicate<T>,
        fromIndex?: ?number
      ) => number)
      & (<T>(
        array: void | null,

    It looks like the problem starts at the {| block, where the | throws the parser into an expression context. There's an easy fix - if the token at the start/end of an object type block is |, just issue an "invalid character" error (so people don't start writing this in TS, for now) and skip it.

  11. Ryan Cavanaugh (RyanCavanaugh)
    removed
    Needs More InfoThe issue still hasn't been fully clarified
    on Oct 13, 2022
  12. Ryan Cavanaugh (RyanCavanaugh)
    assigned
    navya9singh
    on Oct 13, 2022
  13. Ryan Cavanaugh (RyanCavanaugh)
    added
    BugA bug in TypeScript
    on Oct 13, 2022
  14. Ryan Cavanaugh (RyanCavanaugh)
    added this to the TypeScript 4.9.2 milestone on Oct 13, 2022

  15. shuckster commented on Oct 13, 2022

    @shuckster
    Conan (shuckster)
    on Oct 13, 2022
    Author

    Wow, great! Glad it's fixable, and thank you.

  16. TypeScript Bot (typescript-bot)
    added
    Fix AvailableA PR has been opened for this issue
    on Jan 23, 2023
  17. Ryan Cavanaugh (RyanCavanaugh)
    added
    RescheduledThis issue was previously scheduled to an earlier milestone
    on Feb 1, 2023
  18. Ryan Cavanaugh (RyanCavanaugh)
    modified the milestones: TypeScript 4.9.2, TypeScript 5.1.0 on Feb 1, 2023
  19. Ryan Cavanaugh (RyanCavanaugh)
    modified the milestones: TypeScript 5.1.0, TypeScript 5.5.0 on Mar 4, 2024
  20. Ryan Cavanaugh (RyanCavanaugh)
    modified the milestones: TypeScript 5.5.0, TypeScript 5.7.0 on Jul 26, 2024
  21. Ryan Cavanaugh (RyanCavanaugh)
    added
    Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identified
    on Oct 16, 2025
  22. Jake Bailey (jakebailey)
    removed
    Fix AvailableA PR has been opened for this issue
    on Aug 20, 2026
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BugA bug in TypeScriptDomain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedRescheduledThis issue was previously scheduled to an earlier milestone

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