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Issues list

Inconsistent typechecking with require() in JS and TS Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Needs More Info The issue still hasn't been fully clarified
#60032 opened Sep 23, 2024 by u130b8
5
Error not issued when global type is an alias of an object type literal Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#57564 opened Feb 27, 2024 by rotu Backlog
6
Inconsistent type inference on overloaded function types Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros 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
#57351 opened Feb 9, 2024 by jsalvata Backlog
5
mapped type with remapped keys unexpectedly widens type Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Needs Investigation This issue needs a team member to investigate its status.
#57265 opened Feb 1, 2024 by rotu
@weswigham
12
Crash when defining Array type via [] syntax Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Help Wanted You can do this
#57009 opened Jan 10, 2024 by rotu Backlog
5
Expression produces a union type that is too complex to represent Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Needs Investigation This issue needs a team member to investigate its status.
#53234 opened Mar 13, 2023 by Jym77
1
@gabritto
17
Order of ReadonlySet/ReadonlyMap in union causes differing key inference Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Union Order Dependence TS behavior is not supposed to depend on union order, but sometimes does
#52313 opened Jan 19, 2023 by jakebailey Backlog
1
Regression in 4.8 where string union type widens to string Bug A bug in TypeScript Fix Available A PR has been opened for this issue Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Rescheduled This issue was previously scheduled to an earlier milestone
#50635 opened Sep 5, 2022 by me4502 TypeScript 5.7.0
1
@andrewbranch
6
Intersection causes incorrect type compatability Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Needs Investigation This issue needs a team member to investigate its status.
#48720 opened Apr 15, 2022 by webstrand Backlog
5
Support inferring never as the return type in JavaScript when overriding a class method that returns never Awaiting More Feedback This means we'd like to hear from more people who would be helped by this feature Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Suggestion An idea for TypeScript
#46791 opened Nov 12, 2021 by ExE-Boss
4 tasks done
3
Typescript 4.2.x - incorrectly infered generic return type of a record union (extra undefined) Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#43943 opened May 4, 2021 by TheEdward162 Backlog
@andrewbranch
2
Broken emit when Infinity or ‑Infinity ends up in a type position Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#42905 opened Feb 21, 2021 by ExE-Boss Backlog
1
6
Correctly handle generic functions (e.g.: Object.freeze) passed as callbacks to generic functions (e.g.: Array.prototype.map) Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros In Discussion Not yet reached consensus Suggestion An idea for TypeScript
#42862 opened Feb 18, 2021 by ExE-Boss
5 tasks done
2
The type of bitwise operations on 'any' operands should be 'number | bigint' Awaiting More Feedback This means we'd like to hear from more people who would be helped by this feature Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Suggestion An idea for TypeScript
#42125 opened Dec 27, 2020 by fasttime
12
Error when trying to assign a subclass of a base class with generics to typeof of that base class Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#41770 opened Dec 2, 2020 by dummdidumm Backlog
4
Compile error if I named last array destructuring element. Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#41548 opened Nov 16, 2020 by heroboy Backlog
3
In JSDoc @type is not a type declaration, which it is much more like type conversion. Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#39650 opened Jul 18, 2020 by leecjson Backlog
4
improper declared type cause narrow type not work when its computed type is not union. Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#39114 opened Jun 17, 2020 by ShuiRuTian Backlog
7
Implicit Symbol.iterator call in for..of loops / spread destructuring doesn't infer this generic type parameter Experience Enhancement Noncontroversial enhancements Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Suggestion An idea for TypeScript
#38388 opened May 7, 2020 by Validark Backlog
1
8
the type of super() should be instance, not void Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Needs Investigation This issue needs a team member to investigate its status.
#37847 opened Apr 8, 2020 by LongTengDao Backlog
5
Support Intellisense for string/number literals in a widened union Experience Enhancement Noncontroversial enhancements Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros Suggestion An idea for TypeScript
#33471 opened Sep 17, 2019 by orta
5 tasks done
Backlog
11
Allow extending types referenced through interfaces Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros In Discussion Not yet reached consensus Suggestion An idea for TypeScript
#31843 opened Jun 10, 2019 by inad9300
12
Suggestion: Type annotations and interfaces for function declarations Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros In Discussion Not yet reached consensus Suggestion An idea for TypeScript
#22063 opened Feb 20, 2018 by mbrowne
39
this any typed in some JS object literals Bug A bug in TypeScript Domain: JavaScript The issue relates to JavaScript specifically Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros VS Code Tracked There is a VS Code equivalent to this issue
#22058 opened Feb 20, 2018 by mjbvz Backlog
2
Error inferring types of promise function Bug A bug in TypeScript Has Repro This issue has compiler-backed repros: https://aka.ms/ts-repros
#17873 opened Aug 17, 2017 by ghost Backlog
2
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