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[ServerErrors][JavaScript] main vs  #64622

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Open
[ServerErrors][JavaScript] main vs #64622
Assignees
iisaduan
Labels
BugA bug in TypeScript
Milestone
TypeScript 7.1.1 RC

Description

@typescript-automation
typescript-automation
bot
opened on Oct 3, 2026

The following errors were reported by main
Pipeline that generated this bug
Logs for the pipeline run
File that generated the pipeline

This run considered 300 popular TS repos from GH (after skipping the top 0).

Successfully analyzed 205 of 300 visited repos
Outcome Count
Detected interesting changes 4
Detected no interesting changes 201
Git clone failed 1
Timeout 73
Unknown failure 21

Seed: [Vp$)[}v;G{v6:#E9}1%

Activity

  1. typescript-automation commented on Oct 3, 2026

    @typescript-automation
    typescript-automationbot
    on Oct 3, 2026 – with TypeScript Automation
    ContributorAuthor

    Server connection closed prematurely: undefined

    unknown
Server connection closed prematurely: undefined

    Affected repos

    tastejs/todomvc Raw error text: RepoResults4/tastejs.todomvc.rawError.txt in the artifact folder
    Replay commands: RepoResults4/tastejs.todomvc.replay.txt in the artifact folder

    Old server result

    The old server completed successfully for this repo.

    Last few requests

    {"kind":"request","method":"textDocument/definition","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/examples/typescript-react/js/bundle.js"},"position":{"line":14975,"character":4}}}
{"kind":"request","method":"textDocument/completion","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/examples/typescript-react/js/bundle.js"},"position":{"line":14975,"character":62},"context":{"triggerKind":1}}}
{"kind":"notification","method":"textDocument/didChange","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/examples/typescript-react/js/bundle.js","version":937},"contentChanges":[{"range":{"start":{"line":14978,"character":2},"end":{"line":14978,"character":3}},"text":""}]}}
{"kind":"request","method":"textDocument/definition","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/examples/typescript-react/js/bundle.js"},"position":{"line":14980,"character":6}}}

    Repro steps

    #!/bin/bash

git clone https://github.com/tastejs/todomvc --recurse-submodules
git -C "./todomvc" reset --hard ff43b02e59dfa604386bb382034b2cd07c2bcd8a
downloadUrl=$(curl -s "https://typescript.visualstudio.com/TypeScript/_apis/build/builds/169175/artifacts?artifactName=RepoResults4&api-version=7.0" | jq -r ".resource.downloadUrl")
wget -O RepoResults4.zip "$downloadUrl"
unzip -p RepoResults4.zip RepoResults4/tastejs.todomvc.replay.txt > tastejs.todomvc.replay.txt
npm install --no-save @typescript/server-replay
# Install the repro project's packages
npx tsreplay install ./todomvc

    To run the repro, use the "Launch replay test" launch configuration in your local copy of native TypeScript.

  2. typescript-automation commented on Oct 3, 2026

    @typescript-automation
    typescript-automationbot
    on Oct 3, 2026 – with TypeScript Automation
    ContributorAuthor

    Server connection closed prematurely: undefined

    unknown
Server connection closed prematurely: undefined

    Affected repos

    gchq/CyberChef Raw error text: RepoResults3/gchq.CyberChef.rawError.txt in the artifact folder
    Replay commands: RepoResults3/gchq.CyberChef.replay.txt in the artifact folder

    Old server result

    The old server completed successfully for this repo.

    Last few requests

    {"kind":"notification","method":"textDocument/didChange","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/operations/tests/ParseCSR.mjs","version":1324},"contentChanges":[{"range":{"start":{"line":935,"character":17},"end":{"line":935,"character":17}},"text":"b"}]}}
{"kind":"request","method":"custom/textDocument/sourceDefinition","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/operations/tests/ParseCSR.mjs"},"position":{"line":940,"character":61}}}
{"kind":"notification","method":"textDocument/didChange","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/operations/tests/ParseCSR.mjs","version":1325},"contentChanges":[{"range":{"start":{"line":951,"character":54},"end":{"line":951,"character":54}},"text":"_"}]}}
{"kind":"request","method":"textDocument/definition","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/operations/tests/ParseCSR.mjs"},"position":{"line":958,"character":0}}}

    Repro steps

    #!/bin/bash

git clone https://github.com/gchq/CyberChef --recurse-submodules
git -C "./CyberChef" reset --hard 609951ac13967da6d497e0600c922f56bfd0b7af
downloadUrl=$(curl -s "https://typescript.visualstudio.com/TypeScript/_apis/build/builds/169175/artifacts?artifactName=RepoResults3&api-version=7.0" | jq -r ".resource.downloadUrl")
wget -O RepoResults3.zip "$downloadUrl"
unzip -p RepoResults3.zip RepoResults3/gchq.CyberChef.replay.txt > gchq.CyberChef.replay.txt
npm install --no-save @typescript/server-replay
# Install the repro project's packages
npx tsreplay install ./CyberChef

    To run the repro, use the "Launch replay test" launch configuration in your local copy of native TypeScript.

  3. typescript-automation commented on Oct 3, 2026

    @typescript-automation
    typescript-automationbot
    on Oct 3, 2026 – with TypeScript Automation
    ContributorAuthor

    panic handling request textDocument/formatting: Debug failure. False expression: Token end is child end

    textDocument/formatting
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).recover(0xdab81b54e08, 0xdab83bb5080)
github.com/microsoft/TypeScript/tsc/internal/debug.Fail(...)
github.com/microsoft/TypeScript/tsc/internal/debug.assertSlow({0xdab8dcfc270?, 0xdab8c7eeff0?, 0x4b?})
github.com/microsoft/TypeScript/tsc/internal/debug.Assert(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab9a1d8d68, 0xdab8cca6238?, 0xdab8dcfc418?, 0x30?, 0xdab8c7eeff0, 0xffffffffffffffff, 0xdab9a1d8d68, 0xdab8a8090e0, 0x3, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func1(0xdab8c7eeff0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).VisitNode(0xdab8dcfc388?, 0x1bc7c48?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNode(0x10100?, 0xd54744?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*BinaryExpression).VisitEachChild(0xdab9a1d8d68, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0x6?, 0xdab9a1d8d68?, 0x0?, 0x0?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab9a1d8d68, 0xdab823a2e08, 0x3, 0x3, 0x0, 0x3)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab9a1d8dd0, 0xdab8cca6238?, 0xdab8dcfc788?, 0x30?, 0xdab9a1d8d68, 0xffffffffffffffff, 0xdab9a1d8dd0, 0xdab8a809050, 0x3, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func1(0xdab9a1d8d68)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).VisitNode(0xdab8dcfc6f8?, 0x1bc7c48?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNode(0x10100?, 0xd54744?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*BinaryExpression).VisitEachChild(0xdab9a1d8dd0, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0x6?, 0xdab9a1d8dd0?, 0x0?, 0xffffffffffffffff?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab9a1d8dd0, 0xdab823a2e08, 0x3, 0x3, 0x0, 0x3)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab9a1d8e38, 0xdab8cca6238?, 0xdab8dcfcaf8?, 0x30?, 0xdab9a1d8dd0, 0xffffffffffffffff, 0xdab9a1d8e38, 0xdab8a808fc0, 0x3, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func1(0xdab9a1d8dd0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).VisitNode(0xdab8dcfca68?, 0x1bc7c48?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNode(0x10100?, 0xd54744?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*BinaryExpression).VisitEachChild(0xdab9a1d8e38, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0x6?, 0xdab9a1d8e38?, 0x0?, 0xffffffffffffffff?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab9a1d8e38, 0xdab823a2e08, 0x3, 0x3, 0x0, 0x3)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab88add888, 0xdab8cca6238?, 0xdab8dcfce68?, 0x30?, 0xdab9a1d8e38, 0xffffffffffffffff, 0xdab88add888, 0xdab8a808f30, 0x3, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func1(0xdab9a1d8e38)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).VisitNode(0xdab8dcfcdd8?, 0x1bc7c48?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNode(0x10100?, 0xd54744?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*BinaryExpression).VisitEachChild(0xdab88add888, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0x6?, 0xdab88add888?, 0x0?, 0x22b?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab88add888, 0xdab823a2e08, 0x3, 0x3, 0x0, 0x3)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab8c50f440, 0x0?, 0x2?, 0x3?, 0xdab88add888, 0xffffffffffffffff, 0xdab8c50f440, 0xdab8a808ea0, 0x3, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func1(0xdab88add888)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).VisitNode(0xdab8a808f20?, 0x90?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNode(0xdab8a808f20?, 0xdab8a808a20?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*ExpressionStatement).VisitEachChild(0xdab8c50f440, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0x6?, 0xdab8c50f440?, 0x0?, 0x10200020101001a?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab8c50f440, 0xdab823a2e08, 0x3, 0x3, 0x0, 0x3)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNode(0xdab93e3e3c0, 0xdab823a2e08, 0x0?, 0x0?, 0x0?, 0xdab8c50f440, 0xffffffffffffffff, 0xdab823a2e08, 0xdab8a808a20, 0x1, ...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processChildNodes(0xdab93e3e3c0, 0xdab823a2e08, 0xdab8a808a20, 0x1, 0x1, 0xdab8ee7a5c0, 0xdab823a2e08, 0x1, 0xdab8a808a20)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute.func2(0xdab8ee7a5c0, 0x4254c5?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitNodes(0xb0000004236a8?, 0x1bc7c48?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*NodeVisitor).visitTopLevelStatements(0xdab8dd1f808?, 0xdab8a808a20?)
github.com/microsoft/TypeScript/tsc/internal/ast.(*SourceFile).VisitEachChild(0xdab823a2e08, 0xdab8d038ae0)
github.com/microsoft/TypeScript/tsc/internal/ast.(*Node).VisitEachChild(...)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).executeProcessNodeVisitor(0xdab93e3e3c0, 0xdab82f846b8?, 0x6e6878?, 0xdab8221b680?, 0x24?)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).processNode(0xdab93e3e3c0, 0xdab823a2e08, 0xdab823a2e08, 0x1, 0x1, 0x0, 0x0)
github.com/microsoft/TypeScript/tsc/internal/format.(*formatSpanWorker).execute(0xdab93e3e3c0, 0x488465?)
github.com/microsoft/TypeScript/tsc/internal/format.newFormattingScanner({0xdab8221b680, 0x273}, 0x1, 0x0, 0x273, 0xdab93e3e3c0)
github.com/microsoft/TypeScript/tsc/internal/format.FormatSpan({0x1be1658, 0xdaba036f5f0}, {0x0, 0x273}, 0xdab823a2e08, 0x0)
github.com/microsoft/TypeScript/tsc/internal/format.FormatDocument({0x1be1658?, 0xdaba036f5f0?}, 0x3?)
github.com/microsoft/TypeScript/tsc/internal/ls.(*LanguageService).getFormattingEditsForDocument(0x1c36a00?, {0x1be1658?, 0xdaba036f530?}, 0xdab823a2e08, {{0x0, 0x2, 0x3, 0x2, {0xee77e8, 0x1}, ...}, ...})
github.com/microsoft/TypeScript/tsc/internal/ls.(*LanguageService).ProvideFormatDocument(0xdab8770a600, {0x1be1658, 0xdaba036f530}, {0xdab896cbe00?, 0xdab856dd650?}, 0xdab8e8ecd40)
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).handleDocumentFormat(0x0?, {0x1be1658?, 0xdaba036f530?}, 0x406a3b?, 0xffffffffffffffff?)
github.com/microsoft/TypeScript/tsc/internal/lsp.handlerMap.registerLanguageServiceDocumentRequestHandler[...].1.1()
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).handleRequestOrNotification.func1()
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).dispatchLoop.func3()
created by github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).dispatchLoop in goroutine 8

    Affected repos

    prettier/prettier Raw error text: RepoResults2/prettier.prettier.rawError.txt in the artifact folder
    Replay commands: RepoResults2/prettier.prettier.replay.txt in the artifact folder

    Old server result

    The old server completed successfully for this repo.

    Last few requests

    {"kind":"request","method":"custom/textDocument/sourceDefinition","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/format/jsx/comments/in-end-tag.js"},"position":{"line":4,"character":0}}}
{"kind":"request","method":"textDocument/completion","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/format/jsx/comments/in-end-tag.js"},"position":{"line":29,"character":20},"context":{"triggerKind":1}}}
{"kind":"request","method":"textDocument/hover","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/format/jsx/comments/in-end-tag.js"},"position":{"line":29,"character":27}}}
{"kind":"request","method":"textDocument/formatting","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/tests/format/jsx/comments/in-end-tag.js"},"options":{"tabSize":3,"insertSpaces":true,"trimTrailingWhitespace":true,"trimFinalNewlines":true,"insertFinalNewline":true}}}

    Repro steps

    #!/bin/bash

git clone https://github.com/prettier/prettier --recurse-submodules
git -C "./prettier" reset --hard d62653b04d2b7521870fdcb9c19c7044f0bace9e
downloadUrl=$(curl -s "https://typescript.visualstudio.com/TypeScript/_apis/build/builds/169175/artifacts?artifactName=RepoResults2&api-version=7.0" | jq -r ".resource.downloadUrl")
wget -O RepoResults2.zip "$downloadUrl"
unzip -p RepoResults2.zip RepoResults2/prettier.prettier.replay.txt > prettier.prettier.replay.txt
npm install --no-save @typescript/server-replay

    To run the repro, use the "Launch replay test" launch configuration in your local copy of native TypeScript.

  4. typescript-automation commented on Oct 3, 2026

    @typescript-automation
    typescript-automationbot
    on Oct 3, 2026 – with TypeScript Automation
    ContributorAuthor

    panic handling request textDocument/diagnostic: flaky diagnostic(s) logged:

    textDocument/diagnostic
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).recover(0x2f41d65a0e08, 0x2f41f5cc15f0)
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).handleDocumentDiagnostic(0x2f41d65a0e08, {0x1be1658?, 0x2f41f5cc16b0?}, 0x2f41e84c1c00, 0x2f41f5cc16e0)
github.com/microsoft/TypeScript/tsc/internal/lsp.handlerMap.registerLanguageServiceDocumentRequestHandler[...].1.1()
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).handleRequestOrNotification.func1()
github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).dispatchLoop.func3()
created by github.com/microsoft/TypeScript/tsc/internal/lsp.(*Server).dispatchLoop in goroutine 23

    Affected repos

    chartjs/Chart.js Raw error text: RepoResults1/chartjs.Chart.js.rawError.txt in the artifact folder
    Replay commands: RepoResults1/chartjs.Chart.js.replay.txt in the artifact folder

    Old server result

    The old server completed successfully for this repo.

    Last few requests

    {"kind":"request","method":"textDocument/diagnostic","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/src/elements/element.bar.js"}}}
{"kind":"request","method":"textDocument/codeLens","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/src/elements/element.bar.js"}}}
{"kind":"request","method":"textDocument/inlayHint","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/src/elements/element.bar.js"},"range":{"start":{"line":0,"character":0},"end":{"line":226,"character":0}}}}
{"kind":"request","method":"textDocument/semanticTokens/full","params":{"textDocument":{"uri":"@PROJECT_ROOT_URI@/src/elements/element.bar.js"}}}

    Repro steps

    #!/bin/bash

git clone https://github.com/chartjs/Chart.js --recurse-submodules
git -C "./Chart.js" reset --hard 7169e65147a47f3720957a6f156a33c838ab9f57
downloadUrl=$(curl -s "https://typescript.visualstudio.com/TypeScript/_apis/build/builds/169175/artifacts?artifactName=RepoResults1&api-version=7.0" | jq -r ".resource.downloadUrl")
wget -O RepoResults1.zip "$downloadUrl"
unzip -p RepoResults1.zip RepoResults1/chartjs.Chart.js.replay.txt > chartjs.Chart.js.replay.txt
npm install --no-save @typescript/server-replay

    To run the repro, use the "Launch replay test" launch configuration in your local copy of native TypeScript.

  5. Ryan Cavanaugh (RyanCavanaugh)
    added
    BugA bug in TypeScript
    on Oct 6, 2026
  6. Ryan Cavanaugh (RyanCavanaugh)
    added this to the TypeScript 7.1.1 RC milestone on Oct 6, 2026
  7. Ryan Cavanaugh (RyanCavanaugh)
    assigned
    Isabel Duan (iisaduan)
    on Oct 6, 2026
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