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Issues list

Proposal: Allow isolated declarations to infer results of constructor calls Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#60010 opened Sep 19, 2024 by MichaelMitchell-at
6 tasks done
Backlog
10
Synthesized optional properties don't satisfy Record< target under EOPT: false Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#59180 opened Jul 8, 2024 by todor-a Backlog
3
Allow defering type check of default value for generic-typed function parameter until instantiation Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#58977 opened Jun 23, 2024 by allisonkarlitskaya
6 tasks done
6
Discriminated union with an optional discriminator is not being resolved as expected Experimentation Needed Someone needs to try this out to see what happens 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
#58508 opened May 12, 2024 by vladmw5 Backlog
4
Defer TransformFlags Calculation Domain: Performance Reports of unusually slow behavior Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#58395 opened May 1, 2024 by DanielRosenwasser TypeScript 5.6.0
@PranavSenthilnathan
2
Object spreading produces wrong type with non-literal keys Bug A bug in TypeScript Experimentation Needed Someone needs to try this out to see what happens
#56431 opened Nov 16, 2023 by coolCucumber-cat Backlog
1
6
Replace Node interface with discriminated unions Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#56275 opened Oct 31, 2023 by JoshuaKGoldberg
5 tasks done
4
Identities should report an error Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#55699 opened Sep 10, 2023 by kkmuffme
5 tasks done
@DanielRosenwasser
6
ReturnType and InstanceType don't work for functions/constructors with never in their parameters Domain: lib.d.ts The issue relates to the different libraries shipped with TypeScript Effort: Casual Good issue if you're already used to contributing to the codebase. Harder than "good first issue". Experimentation Needed Someone needs to try this out to see what happens Help Wanted You can do this Suggestion An idea for TypeScript
#55667 opened Sep 7, 2023 by mkantor
1
1
discriminated union type narrow when destructuring object within desturct array Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#55664 opened Sep 7, 2023 by wusiquan Backlog
4
Experiment with Parallelized Parsing Domain: Performance Reports of unusually slow behavior Experimentation Needed Someone needs to try this out to see what happens Rescheduled This issue was previously scheduled to an earlier milestone Suggestion An idea for TypeScript
#54256 opened May 15, 2023 by DanielRosenwasser TypeScript 5.7.0
@rbuckton @jakebailey
8
Reusing nodeLinks and symbolLinks Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#54234 opened May 13, 2023 by yf-yang
3
Incremental Binding Experimentation Needed Someone needs to try this out to see what happens Help Wanted You can do this Suggestion An idea for TypeScript
#54222 opened May 12, 2023 by yf-yang
5 tasks done
Backlog
2
Create subtype reduction rules for assertion functions Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#53963 opened Apr 22, 2023 by Tomeamis Backlog
4
The intersection of a tuple with an unrelated array is handled inconsistently Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#53355 opened Mar 19, 2023 by geoffreytools Backlog
13
Investigate removing the concept of object allocators Committed The team has roadmapped this issue Domain: Performance Reports of unusually slow behavior Experimentation Needed Someone needs to try this out to see what happens Infrastructure Issue relates to TypeScript team infrastructure Suggestion An idea for TypeScript
#52958 opened Feb 25, 2023 by DanielRosenwasser TypeScript 5.4.0
@rbuckton
Type Confusion when overwriting field on object creation Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#52797 opened Feb 16, 2023 by ssp Backlog
1
Resolve deferred conditional types to their true branch when instantiated with a type parameter constrained to the tested type Experience Enhancement Noncontroversial enhancements Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#52144 opened Jan 8, 2023 by kaczor6418 Backlog
4
Instantiation expressions don't filter signatures with non-matching constraints Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#51694 opened Nov 30, 2022 by Andarist Backlog
1
5
Improve reverse mapped types inference by creating candidates from concrete index types Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#51612 opened Nov 21, 2022 by Andarist
5 tasks done
Backlog
1
5
Declaration emit contains trivial local duplicates Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#51610 opened Nov 21, 2022 by robpalme Backlog
2
Experiment with tracking which entities actually may be narrowed Domain: Performance Reports of unusually slow behavior Experimentation Needed Someone needs to try this out to see what happens Fix Available A PR has been opened for this issue Rescheduled This issue was previously scheduled to an earlier milestone Suggestion An idea for TypeScript
#51525 opened Nov 14, 2022 by DanielRosenwasser TypeScript 5.7.0
1
@weswigham
4
Carry over source constraints to the inferred type parameter Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#51108 opened Oct 8, 2022 by Andarist
5 tasks done
Backlog
2
Assigning a value with the wrong type through dynamic attribute name (bracket notation) not reported in some cases Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#50859 opened Sep 20, 2022 by fjolliton Backlog
4
Spread operator should not have worse ergonomics than apply - unexpected error spreading a union-of-tuples Experimentation Needed Someone needs to try this out to see what happens Suggestion An idea for TypeScript
#49802 opened Jul 6, 2022 by callionica
14
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