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Ghost error appearing after signature help in inferred signatures with rest parameter

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Help WantedYou can do thisYou can do this

Status: Open.

#62183 In microsoft/TypeScript;

· Andarist opened on Aug 3, 2025

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Backlog

Ghost error in a circular situation

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Help WantedYou can do thisYou can do this

Status: Open.

#62181 In microsoft/TypeScript;

· Andarist opened on Aug 3, 2025

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Backlog

<code>'X' only refers to a type</code> error in JSDoc comments

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Status: Open.

#59401 In microsoft/TypeScript;

· mjbvz opened on Jul 23, 2024

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TypeScript 5.7.0

Strange runtime caching bug involving <code>as const</code> and <code>const T</code> generic

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Help WantedYou can do thisYou can do this

Possible ImprovementThe current behavior isn't wrong, but it's possible to see that it might be better in some casesThe current behavior isn't wrong, but it's possible to see that it might be better in some cases

Status: Open.

#58351 In microsoft/TypeScript;

· JosXa opened on Apr 29, 2024

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Backlog

Inconsistent errors reported between tsc and VSCode (Unions across objects with method overload definitions)

BugA bug in TypeScriptA bug in TypeScript

Cursed?It's likely this is extremely difficult to fix without making something else much, much worseIt's likely this is extremely difficult to fix without making something else much, much worse

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Help WantedYou can do thisYou can do this

Union Order DependenceTS behavior is not supposed to depend on union order, but sometimes doesTS behavior is not supposed to depend on union order, but sometimes does

Status: Open.

#53614 In microsoft/TypeScript;

· frank-weindel opened on Mar 31, 2023

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Backlog

Undetected illegal assignment of nested array types

BugA bug in TypeScriptA bug in TypeScript

Cursed?It's likely this is extremely difficult to fix without making something else much, much worseIt's likely this is extremely difficult to fix without making something else much, much worse

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Help WantedYou can do thisYou can do this

Status: Open.

#52912 In microsoft/TypeScript;

· martinwepner opened on Feb 22, 2023

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Backlog

unused type declaration causes totally unrelated error (Index signatures are incompatible)

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

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

Status: Open.

#45258 In microsoft/TypeScript;

· safareli opened on Jul 31, 2021

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TypeScript 5.7.0

Unexpected behavior when static methods are used in an array

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

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

Status: Open.

#41977 In microsoft/TypeScript;

· AndrewKushnir opened on Dec 15, 2020

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Backlog

tsc reports error that LS does not

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

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

Status: Open.

#39811 In microsoft/TypeScript;

· amcasey opened on Jul 29, 2020

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TypeScript 5.7.0

--noEmitOnError trace has incorrect number of errors

BugA bug in TypeScriptA bug in TypeScript

Domain: check: Error InstabilityErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepanciesErrors appear or disappear based on order of checker operations, e.g. LS / tsc discrepancies

Status: Open.

#34162 In microsoft/TypeScript;

· apacheli opened on Oct 13, 2019

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Backlog