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Investigate deoptimization diagnostics tooling

Domain: PerformanceReports of unusually slow behaviorReports of unusually slow behavior

InfrastructureIssue relates to TypeScript team infrastructureIssue relates to TypeScript team infrastructure

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

Status: Closed (completed).

#44211 In microsoft/TypeScript;

· by DanielRosenwasser was closed on Jul 7, 2023

TS language service keeps crashing

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

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

Status: Closed (completed).

#48701 In microsoft/TypeScript;

· by fluggo was closed on Feb 2, 2023

Better compatibility error for indexed access type

Domain: Error MessagesThe issue relates to error messagingThe issue relates to error messaging

Effort: CasualGood issue if you're already used to contributing to the codebase. Harder than "good first issue".Good issue if you're already used to contributing to the codebase. Harder than "good first issue".

Experience EnhancementNoncontroversial enhancementsNoncontroversial enhancements

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Closed (completed).

#51069 In microsoft/TypeScript;

· by hasezoey was closed on Feb 1, 2023

Signature help suppresses arity error in editor

BugA bug in TypeScriptA bug in TypeScript

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

Status: Closed (completed).

#49624 In microsoft/TypeScript;

· by andrewbranch was closed on Feb 14, 2023

Circular instantiation expression crashing IDEs

BugA bug in TypeScriptA bug in TypeScript

Domain: Type DisplayBugs relating to showing types in Quick Info/Tooltips, Signature Help, or Completion InfoBugs relating to showing types in Quick Info/Tooltips, Signature Help, or Completion Info

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

Help WantedYou can do thisYou can do this

Status: Closed (completed).

#51202 In microsoft/TypeScript;

· by jcalz was closed on Feb 17, 2023

Type guard affects type of variable in surprising way

BugA bug in TypeScriptA bug in TypeScript

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

Status: Closed (completed).

#50916 In microsoft/TypeScript;

· by MichaelMitchell-at was closed on Feb 14, 2023

Debug failure at walk

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

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

Needs More InfoThe issue still hasn't been fully clarifiedThe issue still hasn't been fully clarified

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

Status: Closed (completed).

#50675 In microsoft/TypeScript;

· by derekstavis was closed on Feb 9, 2023

Revisit <code>access</code> member for decorators

Domain: DecoratorsThe issue relates to the decorator syntaxThe issue relates to the decorator syntax

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

Waiting for TC39Unactionable until TC39 reaches some conclusionUnactionable until TC39 reaches some conclusion

Status: Closed (completed).

#52540 In microsoft/TypeScript;

· by DanielRosenwasser was closed on Feb 9, 2023

Type inference for declared enum member assignment

BugA bug in TypeScriptA bug in TypeScript

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

Status: Closed (completed).

#52531 In microsoft/TypeScript;

· by molisani was closed on Feb 15, 2023

JSX comments break Transformer API in TS 5.0 beta

APIRelates to the public API for TypeScriptRelates to the public API for TypeScript

BugA bug in TypeScriptA bug in TypeScript

Status: Closed (completed).

#52479 In microsoft/TypeScript;

· by zOadT was closed on Jan 30, 2023

<code>any | T</code> from conditional type does not reduce to <code>any</code>

Domain: Conditional TypesThe issue relates to conditional typesThe issue relates to conditional types

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".

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

Help WantedYou can do thisYou can do this

Status: Closed (completed).

#52568 In microsoft/TypeScript;

· by dragomirtitian was closed on Feb 3, 2023

Slow performance due to unnecessary updateProgram synchronisation

Needs More InfoThe issue still hasn't been fully clarifiedThe issue still hasn't been fully clarified

Status: Closed (completed).

#52117 In microsoft/TypeScript;

· by marvinhagemeister was closed on May 4, 2023

"Add missing properties" quick fix for calculated string values generate either empty string or undefined even when it knows the correct value is known

Experience EnhancementNoncontroversial enhancementsNoncontroversial enhancements

Help WantedYou can do thisYou can do this

SuggestionAn idea for TypeScriptAn idea for TypeScript

Status: Closed (completed).

#52097 In microsoft/TypeScript;

· by aurimasniekis was closed on Feb 9, 2023

Shorthand properties with <code>=</code> cause assertion failures in <code>consumeTokenAndAdvanceScanner</code>

BugA bug in TypeScriptA bug in TypeScript

Domain: FormatterThe issue relates to the built-in formatterThe issue relates to the built-in formatter

Domain: Quick FixesEditor-provided fixes, often called code actions.Editor-provided fixes, often called code actions.

Domain: Refactoringse.g. extract to constant or function, rename symbole.g. extract to constant or function, rename symbol

Domain: TransformsRelates to the public transform APIRelates to the public transform API

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".

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

Help WantedYou can do thisYou can do this

Status: Closed (completed).

#52137 In microsoft/TypeScript;

· by DanielRosenwasser was closed on Feb 17, 2023

tsserverlibrary.js includes reference to <code>require</code> that causes webpack to complain

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

InfrastructureIssue relates to TypeScript team infrastructureIssue relates to TypeScript team infrastructure

Status: Closed (completed).

#52521 In microsoft/TypeScript;

· by mjbvz was closed on Jan 30, 2023

<code>@overload</code> Tags do not receive noImplicitAny errors on missing return types

BugA bug in TypeScriptA bug in TypeScript

checkJsRelates to checking JavaScript using TypeScriptRelates to checking JavaScript using TypeScript

Domain: JSDocRelates to JSDoc parsing and type generationRelates to JSDoc parsing and type generation

Effort: CasualGood issue if you're already used to contributing to the codebase. Harder than "good first issue".Good issue if you're already used to contributing to the codebase. Harder than "good first issue".

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

Help WantedYou can do thisYou can do this

Status: Closed (completed).

#52514 In microsoft/TypeScript;

· by DanielRosenwasser was closed on Jan 31, 2023

Completions error when completing a string in parentheses

Crawler-DetectedDetected by a crawler running random TSServer operations on public code.Detected by a crawler running random TSServer operations on public code.

Domain: Completion ListsThe issue relates to showing completion lists in an editorThe issue relates to showing completion lists in an editor

Effort: CasualGood issue if you're already used to contributing to the codebase. Harder than "good first issue".Good issue if you're already used to contributing to the codebase. Harder than "good first issue".

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

Help WantedYou can do thisYou can do this

Status: Closed (completed).

#52874 In microsoft/TypeScript;

· by DanielRosenwasser was closed on Feb 21, 2023

Incorrect parsing for accessor property with newline

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

Needs InvestigationThis issue needs a team member to investigate its status.This issue needs a team member to investigate its status.

Status: Closed (completed).

#51707 In microsoft/TypeScript;

· by sosukesuzuki was closed on Feb 15, 2023

Missing quick fix auto import option after changing moduleResolution to node16

Needs InvestigationThis issue needs a team member to investigate its status.This issue needs a team member to investigate its status.

Status: Closed (completed).

#51871 In microsoft/TypeScript;

· by lucasrabiec was closed on Feb 1, 2023

<code>{@link Foo.length}</code> unexpectedly resolves to Function.length

Needs InvestigationThis issue needs a team member to investigate its status.This issue needs a team member to investigate its status.

Working as IntendedThe behavior described is the intended behavior; this is not a bugThe behavior described is the intended behavior; this is not a bug

Status: Not planned (skipped).

#51938 In microsoft/TypeScript;

· by phlegmaticprogrammer was closed on Feb 3, 2023

Error with <code>is</code> assertion when using <code>exactOptionalPropertyTypes</code> and indexed fields from another interface

BugA bug in TypeScriptA bug in TypeScript

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

Status: Closed (completed).

#51953 In microsoft/TypeScript;

· by hasezoey was closed on Feb 4, 2023

Debug Failure. False expression: type provided should not be a non-generic 'promise'-like.

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

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

Status: Closed (completed).

#51984 In microsoft/TypeScript;

· by yume-chan was closed on Feb 14, 2023

Import the latest changes from <code>typescript-DOM-lib-generator</code> repo to make the latest APIs available

Status: Closed (completed).

#52025 In microsoft/TypeScript;

· by 8ma10s was closed on Feb 1, 2023

private Auto-accessors do not transform in esnext when useDefineForClassFields is false

BugA bug in TypeScriptA bug in TypeScript

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

Status: Closed (completed).

#51528 In microsoft/TypeScript;

· by rbuckton was closed on Feb 16, 2023

spread of overloaded function rejected on generic components in JSX as of 4.7.4

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

Needs InvestigationThis issue needs a team member to investigate its status.This issue needs a team member to investigate its status.

Status: Closed (completed).

#51577 In microsoft/TypeScript;

· by eps1lon was closed on May 8, 2023