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Internal error in tsc: "TypeError: Cannot read properties of undefined (reading 'flags')"

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#61583 In microsoft/TypeScript;

· GaurangTandon opened on Apr 16, 2025

Debug Failure. No error for last overload signature

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#60229 In microsoft/TypeScript;

· thomasballinger opened on Oct 15, 2024

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TypeScript 5.8.0

[ServerErrors][TypeScript] 5.7.0-dev.20240904 vs 5.5.4

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#59900 In microsoft/TypeScript;

· typescript-bot opened on Sep 8, 2024

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TypeScript 5.7.0

RangeError: Maximum call stack size in getTypeAtLocation in files importing in series with template literals

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#59255 In microsoft/TypeScript;

· JoshuaKGoldberg opened on Jul 12, 2024

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TypeScript 5.7.0

TS Server fatal error: Maximum call stack size exceeded

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#59047 In microsoft/TypeScript;

· yunxu1019 opened on May 1, 2024

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TypeScript 5.6.0

Debug Failure. Did not expect ObjectLiteralExpression to have an Identifier in its trivia

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Help WantedYou can do thisYou can do this

Status: Open.

#58027 In microsoft/TypeScript;

· Andarist opened on Apr 1, 2024

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Backlog

tsc crash with jsdoc typedef and object exported with same name.

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Status: Open.

#56891 In microsoft/TypeScript;

· HOnatToprak opened on Dec 27, 2023

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TypeScript 5.4.0

<code>checkImportMetaProperty</code>: debug failure crash

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Help WantedYou can do thisYou can do this

Status: Open.

#56054 In microsoft/TypeScript;

· 0xricksanchez opened on Oct 10, 2023

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Backlog

<code>transpileModule</code>: debug failure crash

BugA bug in TypeScriptA bug in TypeScript

CrashFor flagging bugs which are compiler or service crashes or unclean exits, rather than bad outputFor flagging bugs which are compiler or service crashes or unclean exits, rather than bad output

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Effort: ModerateRequires experience with the TypeScript codebase, but feasible. Harder than "Effort: Casual".Requires experience with the TypeScript codebase, but feasible. Harder than "Effort: Casual".

Help WantedYou can do thisYou can do this

Status: Open.

#55497 In microsoft/TypeScript;

· 0xricksanchez opened on Aug 24, 2023

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Backlog

Internal compiler error: "DataCloneError: Function object could not be cloned."

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

WebsiteDeprecated - please forward issue to microsoft/TypeScript-WebsiteDeprecated - please forward issue to microsoft/TypeScript-Website

Status: Open.

#52463 In microsoft/TypeScript;

· evanw opened on Jan 27, 2023

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Backlog

TS Server fatal error: Maximum call stack size exceeded

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

Fix AvailableA PR has been opened for this issueA PR has been opened for this issue

RescheduledThis issue was previously scheduled to an earlier milestoneThis issue was previously scheduled to an earlier milestone

Status: Open.

#51162 In microsoft/TypeScript;

· shuckster opened on Oct 13, 2022

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TypeScript 5.7.0

Maximum call stack size exceeded

BugA bug in TypeScriptA bug in TypeScript

Domain: CrashesUnhandled exceptions/panics with no immediate primary root cause identifiedUnhandled exceptions/panics with no immediate primary root cause identified

RescheduledThis issue was previously scheduled to an earlier milestoneThis issue was previously scheduled to an earlier milestone

Status: Open.

#50195 In microsoft/TypeScript;

· MiladSadinam opened on Aug 5, 2022

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TypeScript 5.7.0