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Generics get broken when inferred from a function with an implicitly typed parameter
#54438
opened May 29, 2023 by
mattersj
Unexpected "used before its declaration" error when implementing a exported type of a merged namespace
#54429
opened May 28, 2023 by
whzx5byb
Allow overriding parameters of an overridden method
#54426
opened May 28, 2023 by
Malix-Off
5 tasks done
When I use extract method or constant in some senarino , the trailing comment got lost after extraction performed
#54424
opened May 27, 2023 by
wangyang875
Calling indexOf and includes in a readonly array results in a "not assignable" error message
#54422
opened May 27, 2023 by
ytxmobile98
Discriminated unions on interfaces with inheritance cross-contaminate when one discriminate is optional
#54421
opened May 26, 2023 by
RoboPhred
The type of the first element of the A bug in TypeScript
Help Wanted
You can do this
[...T[], T] type is T | undefined when noUncheckedIndexedAccess is enabled
Bug
discriminated types that include one optional case break when combined with unions or interface inheritence
Not a Defect
This behavior is one of several equally-correct options
#54418
opened May 26, 2023 by
RoboPhred
Report evolving arrays / evolving variables differently in QuickInfo
Experience Enhancement
Noncontroversial enhancements
Help Wanted
You can do this
Suggestion
An idea for TypeScript
Compiled code contain jsx code.
Bug
A bug in TypeScript
Fix Available
A PR has been opened for this issue
Add option to include files in type checking, but not compiling
Awaiting More Feedback
This means we'd like to hear from more people who would be helped by this feature
Suggestion
An idea for TypeScript
#54410
opened May 26, 2023 by
remcohaszing
5 tasks done
types of This behavior is one of several equally-correct options
A[] || B[] and A[] ?? B[] are incorrect if A is a subtype of B
Not a Defect
#54409
opened May 26, 2023 by
Alexsey
Generating declaration file (.d.ts) for a single module
Awaiting More Feedback
This means we'd like to hear from more people who would be helped by this feature
Suggestion
An idea for TypeScript
#54408
opened May 26, 2023 by
ClementNerma
5 tasks done
[Function Overloading] implementation is obviously different to the signatures, but no ts error
Duplicate
An existing issue was already created
#54406
opened May 26, 2023 by
shhider
Narrowed generic type is ignored in return type of callback passed to generic function
Bug
A bug in TypeScript
Help Wanted
You can do this
Spread operator mixed with destructuring assignment resulting in unsoundness
Help Wanted
You can do this
Possible Improvement
The current behavior isn't wrong, but it's possible to see that it might be better in some cases
TS function declaration syntax does not cause errors in JS files
Bug
A bug in TypeScript
Help Wanted
You can do this
Inheritance with generics disappears when using typings and "this" type
Design Limitation
Constraints of the existing architecture prevent this from being fixed
#54398
opened May 25, 2023 by
alberto-schena-gizero
Latest RC version tsc faild to load tsconfig.json>compilerOptions>types
Needs More Info
The issue still hasn't been fully clarified
#54390
opened May 25, 2023 by
adoin
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