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TypeScript 4.1 Iteration Plan
#40124 opened Aug 18, 2020 by DanielRosenwasser
Open 45
TypeScript Roadmap: January - June 2020
#36948 opened Feb 21, 2020 by DanielRosenwasser
Open 12
CI Status Thread
#33716 opened Oct 1, 2019 by weswigham
Open 267
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4,574 Open 23,704 Closed
4,574 Open 23,704 Closed
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TypeScript erroneously says we cannot use accessors in abstract class constructors
#41576 opened Nov 18, 2020 by trusktr
The types `{[P in keyof 1]: P}` and `{[P in keyof 1]: P}` both evaluate to `1` when eta-reduced
#41575 opened Nov 18, 2020 by isiahmeadows
TypeScript 3.9 to 4.0 performance regression Domain: Performance Needs Investigation
#41570 opened Nov 17, 2020 by brieb
@amcasey
2
fixUnusedIdentifier asserts, mayDeleteParameter was called on FunctionType Bug
#41568 opened Nov 17, 2020 by sandersn TypeScript 4.2.0
@sandersn
Add compiler option to allow module types to be checked in non module output files
#41567 opened Nov 17, 2020 by KeithHenry 5 of 5
1
Labeled maps, set and records Awaiting More Feedback Suggestion
#41564 opened Nov 17, 2020 by esanzgar 0 of 5
1
v4.0.x -> v4.1.1-rc change in overload selection Breaking Change
#41563 opened Nov 17, 2020 by tchetwin TypeScript 4.1.1
9
import type should not have any effect on output code Duplicate
#41562 opened Nov 17, 2020 by KeithHenry
6
Varargs doesn't inherit overloads properly.
#41558 opened Nov 17, 2020 by Griffork
1
Type parameter of mapped type widened to 'string' when using 'keyof any' Working as Intended
#41554 opened Nov 16, 2020 by sg495
4
Assertion methods (`asserts this is`) are not CFA'd without error Bug
#41552 opened Nov 16, 2020 by clemyan Backlog
Error in 'cast' during 'getApplicableRefactors' Bug Source: Telemetry
#41551 opened Nov 16, 2020 by typescript-bot
String literal in typeof import in typescript 4.1.0-beta. Design Limitation
#41550 opened Nov 16, 2020 by ShanonJackson
3
TSServer doesn't respect watchOptions for watchFile Needs Investigation
#41549 opened Nov 16, 2020 by gluxon TypeScript 4.2.1
@sheetalkamat
2
Compile error if I named last array destructuring element. Bug
#41548 opened Nov 16, 2020 by heroboy Backlog
Wrong error : Object is possibly 'undefined'. (TS2532) Design Limitation
#41542 opened Nov 14, 2020 by hckhanh
1
Interesting use case, might be thought-provoking Needs More Info
#41540 opened Nov 14, 2020 by harrysolovay
1
Design Meeting Notes, 11/13/2020 Design Notes
#41538 opened Nov 14, 2020 by DanielRosenwasser
3
Type inference not working with private fields from constructor Bug help wanted
#41535 opened Nov 13, 2020 by Apacheli Backlog
1
Maximum call stack error while computing document symbol file Bug Fix Available
#41534 opened Dec 25, 2019 by 6502 TypeScript 4.2.0
1
@armanio123
2
TSServer: False expression: Expected line to be non-zero Needs More Info
#41533 opened Nov 13, 2020 by isidorn
2
Type discrimination broken on generic, mapped type values when `strictNullChecks:false` Bug
#41530 opened Nov 13, 2020 by ChuckJonas Backlog
HTMLOrSVGElement does not extend Element Bug Domain: lib.d.ts
#41529 opened Nov 13, 2020 by MarsiBarsi Backlog
7
When a generic interface instance with a default type and passes the conditional judgment, it cannot be correctly identified as the corresponding type Working as Intended
#41527 opened Nov 13, 2020 by misakamaiyako 5 of 5
3
Infer parameter types from usage inserts JSDoc type at wrong location for arrow function Bug Domain: JSDoc Domain: Refactorings
#41526 opened Nov 13, 2020 by mjbvz Backlog
1
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