13 Pull requests merged by 11 people

• Handle lock file 3 version when caching the typings ensuring we can reuse already installed packages

  #61730 merged May 21, 2025

• Fix getResolvePackageJsonImports utility

  #61707 merged May 16, 2025

• Stop reassigning .valueDeclaration to avoid replacing earlier declarations with late ones

  #60857 merged May 15, 2025

• Preserve type parameter constraint in emitted mapped types while preserving their distributivity

  #54759 merged May 12, 2025

• Fix unwanted constant comparisons potentially causing bugs

  #61655 merged May 9, 2025

• Add configurable maximum hover length

  #61662 merged May 9, 2025

• DOM Update 2025-05-02

  #61647 merged May 7, 2025

• docs(lib): add @throws JSDoc for JSON methods

  #61596 merged May 2, 2025

• check usage before declaration for decorators

  #50372 merged May 2, 2025

• arguments should not be allowed in class static block

  #48172 merged May 2, 2025

• fix(61258): Renaming namespace with const enum doesn't update enum references

  #61263 merged Apr 24, 2025

• Add the .getNonPrimitiveType() method to the TypeChecker

  #61562 merged Apr 24, 2025

• Fix #61098

  #61113 merged Apr 24, 2025

21 Pull requests opened by 16 people

• chore: `string` type also allows as args in Intl.NumberFormat.format

  #61628 opened Apr 29, 2025

• Don't obtain apparent type of contextual types being optional type variables

  #61635 opened Apr 30, 2025

• Function initializers as properties

  #61636 opened May 1, 2025

• Make an error message related to the `PropertyDecorator` kinder

  #61637 opened May 1, 2025

• Add opt-in flag for projects that want stricter spread checking

  #61641 opened May 2, 2025

• Draft: Add codefix scaffold for undeclared private method

  #61643 opened May 2, 2025

• Add lib.esnext.sharedmemory

  #61646 opened May 2, 2025

• docs(lib): add @throws JSDoc for BigInt methods and constructor

  #61653 opened May 4, 2025

• Avoid resolving source prop type when the target is `unknown`/`any`

  #61660 opened May 5, 2025

• Fix type variable leaks and cache inconsistencies

  #61668 opened May 7, 2025

• Relate sources to base constraints of mapped type generic indexed accesses

  #61677 opened May 8, 2025

• Compare optional property flag when comparing against discriminant properties under `exactOptionalPropertyTypes`

  #61682 opened May 9, 2025

• Don't compare "missing" to `undefined` in `compareProperties` under `exactOptionalPropertyTypes`

  #61683 opened May 9, 2025

• Add type definitions for `Uint8Array` to/from base64 methods

  #61696 opened May 13, 2025

• Improve `@throws {@link CustomError}` handling

  #61722 opened May 18, 2025

• Bump the github-actions group across 1 directory with 2 updates

  #61726 opened May 19, 2025

• [WIP] Resolution sharing

  #61732 opened May 19, 2025

• Simplify async iterator types

  #61733 opened May 19, 2025

• Initialize the map for dts to reference and source to reference when parsing project reference as its always needed

  #61746 opened May 21, 2025

• Suggest completions for type arguments of expressions

  #61758 opened May 23, 2025

• Return an error if either the left or right value are of type boolean

  #61759 opened May 23, 2025

89 Issues closed by 27 people

• TS2823 import attributes error when using node16 module

  #60507 closed May 23, 2025

• api albaRiyhm link cycle

  #61757 closed May 23, 2025

• private constructor(){}, It is necessary to also explicitly limit instantiation in the compiled js

  #61736 closed May 23, 2025

• Unexpected differences in distribution over union types: type string | 5 behaves differently than type string | [5]

  #61753 closed May 22, 2025

• Assingment type inference is broken with map, forEach

  #61755 closed May 22, 2025

• Overriding type of union works as declared type but not as generic type

  #61729 closed May 22, 2025

• TS Server Plugin rename supoort transform user input

  #61702 closed May 22, 2025

• Function definition parameter type inference

  #61715 closed May 22, 2025

• Suggestion: Reword error message "Property has no initializer and is not definitely assigned in the constructor"

  #61737 closed May 21, 2025

• Type predicates that are not biconditional

  #61740 closed May 21, 2025

• Monorepo workspace packages in devDependencies are not considered for auto-imports

  #61709 closed May 20, 2025

• `convertFunctionToEs6Class` codefix is never triggered — TS80002 diagnostic not reported

  #61738 closed May 20, 2025

• Iterators/Generators, next(), and unsafe yield statement types

  #58381 closed May 20, 2025

• Required properties inside computed property name not detected

  #61731 closed May 19, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250518 vs 5.8.3

  #61725 closed May 19, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250518 vs 5.8.3

  #61724 closed May 19, 2025

• [NewErrors] 5.9.0-dev.20250518 vs 5.8.3

  #61723 closed May 19, 2025

• Boolean type is not inferred correctly when a variable is declared with `let`

  #61727 closed May 19, 2025

• Typescript fail to parse JSX syntax correctly

  #61720 closed May 19, 2025

• Exported types in an ESM namespace are not "nameable" (have repro)

  #61700 closed May 19, 2025

• `jsconfig.*.json` don't have `"allowJs": true` by default

  #61704 closed May 19, 2025

• False negative on exhaustive type guard on multilevel union

  #61708 closed May 19, 2025

• `click` event's interface should be changed to `PointerEvent`

  #60746 closed May 18, 2025

• TypeChecker: Symbol.getDeclarations() returns undefined declarations when used with complex generic types

  #61697 closed May 18, 2025

• Strange vscode typescript intellisense bug.

  #61705 closed May 18, 2025

• Type narrow not worked with this union type.

  #61701 closed May 18, 2025

• type of FetchEvent.handled shold be Promise<undefined> not Promise<void>;

  #61703 closed May 18, 2025

• Type assertion of readonly array property doesn't work only with a class type (static property).

  #61719 closed May 17, 2025

• File '/path/hsciiwapp/node_modules/hsciistr/dist/hsciistr.d.ts' is not a module.ts(2306)

  #61693 closed May 17, 2025

• `tsserver` diagnostic discrepancy on identifier completion

  #60606 closed May 16, 2025

• Mangling interface bindings to indicate identifier type

  #61710 closed May 16, 2025

• JSDoc property modifiers on computed properties

  #60590 closed May 15, 2025

• How to get the name of the codefix from getSupportedCodeFixes?

  #61679 closed May 15, 2025

• Recursive Type Field Validation + Suggest, compile, fail over, Improve Transform of Circular Types Generic type hint Circular<type>

  #61685 closed May 15, 2025

• Generic constraint `extends` is confusing

  #61694 closed May 15, 2025

• Circular Generic Type Transforms to New mutation Circular Generic Types

  #61686 closed May 15, 2025

• Problem of losing "this" context in class method when casting to arrow function

  #61684 closed May 15, 2025

• Readonly methods and readonly types

  #61690 closed May 15, 2025

• interface&type inference

  #61699 closed May 14, 2025

• Expanded function return type for certain mapped types in compiled output causes index access error

  #55049 closed May 12, 2025

• Invalid declarations emitted when using ZodObject from zod as return type of generic function

  #54560 closed May 12, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250511 vs 5.8.3

  #61689 closed May 12, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250511 vs 5.8.3

  #61688 closed May 12, 2025

• [NewErrors] 5.9.0-dev.20250511 vs 5.8.3

  #61687 closed May 12, 2025

• TextNumber to boolean is error

  #61672 closed May 11, 2025

• Typing issue with `extends` keyword

  #61673 closed May 11, 2025

• Nullish coalescing operator does not understand cases where at least one operand is guaranteed to not be null, but not which one is not null

  #61670 closed May 11, 2025

• Class method decorators reset the first field.

  #61665 closed May 10, 2025

• Unwanted constant comparisons potentially causing bugs

  #61654 closed May 9, 2025

• Setting noErrorTruncation to false truncates inferred type of variables/functions; which are not errors

  #26238 closed May 9, 2025

• Add full type hover popup to VS Code commands

  #35601 closed May 9, 2025

• Make object type const with a keyword

  #61681 closed May 9, 2025

• Add an option not to use implicit any when I create an empty container (for example [], new Set() or new Map())

  #61638 closed May 9, 2025

• TypeScript doesn't reverse-infer generic constraints from discriminated unions

  #61661 closed May 9, 2025

• Cross-module inference issue: never-returning function doesn't prevent further type checking in async context

  #61649 closed May 9, 2025

• Mishandling of generic parameter in Parameters

  #61675 closed May 8, 2025

• TypeScript erroneously reports unused variable 'toDate'

  #61674 closed May 8, 2025

• check

  #61669 closed May 8, 2025

• Unexpected narrowing of optional fields via Object.entries

  #61650 closed May 6, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250504 vs 5.8.3

  #61658 closed May 6, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250504 vs 5.8.3

  #61657 closed May 6, 2025

• [NewErrors] 5.9.0-dev.20250504 vs 5.8.3

  #61656 closed May 6, 2025

• TypeScript: After moving file into new destination its extensions `declare module '../types' {` are not changing path of module being extending

  #61639 closed May 5, 2025

• string also allows as args in Intl.NumberFormat.format

  #61629 closed May 5, 2025

• Bug: Predicate function does not narrow correctly

  #61652 closed May 4, 2025

• "used before its declaration" errors not reported when variable/enum/class is used as decorator parameter on class member

  #50349 closed May 2, 2025

• `rewriteRelativeImportExtensions` errors on relative import

  #61615 closed May 2, 2025

• [ServerErrors][TypeScript] 5.9.0-dev.20250427 vs 5.8.3

  #61624 closed May 2, 2025

• [ServerErrors][JavaScript] 5.9.0-dev.20250427 vs 5.8.3

  #61623 closed May 2, 2025

• [NewErrors] 5.9.0-dev.20250427 vs 5.8.3

  #61622 closed May 2, 2025

• `arguments` should not be allowed class static block

  #48152 closed May 2, 2025

• Allow .ts extension when importing from a private mapping?

  #61613 closed May 1, 2025

• The inference when using the new keyword doesn't work as expected.

  #61621 closed May 1, 2025

• Inconsistency with default value export and default type export

  #61626 closed May 1, 2025

• incomplete between parameter type annotation and default value, but no error is reported.

  #61627 closed May 1, 2025

• Argument of type 'object & Record<"property", unknown>' is not assignable to parameter of type 'Interface'.

  #61619 closed May 1, 2025

• Proposal: Add Overloads to `Array.prototype.includes` and `ReadonlyArray.prototype.includes` for Improved Type Safety and Usability

  #61618 closed Apr 29, 2025

• JSX.Element and function component return type assignability

  #61620 closed Apr 28, 2025

• JSDoc type parameter `{object|boolean}`: error in object properties

  #61612 closed Apr 28, 2025

• Inconsistent inferred type for extended unions.

  #61616 closed Apr 28, 2025

• Don't allow applying the ! operator to uncalled functions

  #61607 closed Apr 27, 2025

• Intellisense should show internals of an interface declaration on hover

  #38040 closed Apr 25, 2025

• Add caching to improve performance of rebuilds in --build mode

  #60701 closed Apr 25, 2025

• TypeScript fails to infer generic key `K` when constrained by `T[K]`'s type and `T` is inferred from `this`

  #61611 closed Apr 25, 2025

• Renaming namespace with const enum doesn't update enum references

  #61258 closed Apr 24, 2025

• Add `.getObjectType()` to the `TypeChecker`

  #61517 closed Apr 24, 2025

• Type containing templated, branded string is not assignable to itself

  #61098 closed Apr 24, 2025

• "Debug Failure. False expression." when using default export from js file

  #60692 closed Apr 24, 2025

• Docs for `--rewriteRelativeImportExtensions` literally say "Does something"

  #61609 closed Apr 24, 2025

49 Issues opened by 38 people

• Spreading constrained generic parameters allows for invalid/unsafe return types

  #61754 opened May 22, 2025

• [BUG] This JSX tag requires the module path 'react/jsx-runtime' to exist, but none could be found. Make sure you have types for the appropriate package installed.

  #61756 opened May 22, 2025

• `declare namespace { using ... }` generates incorrect dts

  #61752 opened May 22, 2025

• Completions for type arguments of expressions

  #61751 opened May 22, 2025

• Tuples: maintaining type-param in the type of it's items

  #61750 opened May 22, 2025

• noUnusedLocals doesn't error when using a ...rest declaration

  #61748 opened May 21, 2025

• `for (using of =` is incorrectly parsed.

  #61747 opened May 21, 2025

• Intersection of `object` and array breaks homomorphism

  #61745 opened May 21, 2025

• TS looses track of enum coming from module declaration

  #61744 opened May 21, 2025

• Intersection with a mapped type breaks bypassing private assignability.

  #61743 opened May 21, 2025

• Design Meeting Notes, 5/21/2025

  #61742 opened May 21, 2025

• Missing references in TypeScript

  #61741 opened May 21, 2025

• Add ES2025 target and library

  #61735 opened May 20, 2025

• "'const' declarations can only be declared inside a block" should be issued more aggressively

  #61734 opened May 19, 2025

• Poor quick info due to erroneously deferring `keyof T` since #51621

  #61728 opened May 19, 2025

• Mixing base class defeats circularity protection

  #61721 opened May 18, 2025

• Emitted declarations for JS file do not import a class if it's re-exported

  #61718 opened May 17, 2025

• `tsc --build --watch` produces stray `.js`/`.js.map` files when adding a file to upstream project

  #61717 opened May 17, 2025

• Double initializing a `readonly` field should not be allowed

  #61716 opened May 17, 2025

• `using` transform throws when a for body binding shadows the for head binding

  #61714 opened May 16, 2025

• Missing Intl.Locale.prototype.getWeekInfo()

  #61713 opened May 16, 2025

• Add option to remove "move to new file" quick fix

  #61712 opened May 16, 2025

• Resolution order dependent circular heritage

  #61711 opened May 16, 2025

• `Object.groupBy` should not return `Partial<Record<string, T>>` or `Partial<Record<number, T>>`

  #61706 opened May 15, 2025

• Internal caching of Iterable types skips type checks for optional Arrays, only emits error on first encountered instance of TS error 2488

  #61698 opened May 13, 2025

• base64/hex methods missing from `Uint8Array`

  #61695 opened May 12, 2025

• This JSX tag's 'children' prop expects type 'string' which requires multiple children, but only a single child was provided

  #61692 opened May 12, 2025

• The entries collection in observers should be non-empty

  #61691 opened May 12, 2025

• Generic TypedArray constructors have only one overload

  #61680 opened May 9, 2025

• With exactOptionalPropertyTypes enabled, assigning a union with missing literal properties is incorrectly allowed

  #61678 opened May 9, 2025

• A contextually-typed signature coming from correlated union can't be assigned back to source of its contextual type

  #61676 opened May 8, 2025

• public static fields without initializer are removed even with `useDefineForClassFields=true`

  #61671 opened May 8, 2025

• Type variable leak and odd error

  #61667 opened May 7, 2025

• Omit JSDoc type directives when emitting type declarations with documentation

  #61664 opened May 6, 2025

• VS Code doesn't show autocomplete for Mongoose MongoDB operators (like $elemMatch, $match,$gte and ...) in JavaScript, while WebStorm does

  #61666 opened May 6, 2025

• Tsserver never picks up a new file

  #61663 opened May 6, 2025

• Support cyclical type inference of self-referential data structures, when subject to some assignability constraints

  #61659 opened May 4, 2025

• Support the `@private` JSDoc directive to exclude private APIs from emitted type declarations

  #61651 opened May 4, 2025

• TypeScript 5.9 Iteration Plan

  #61648 opened May 2, 2025

• require(esm) 'module.exports' interop export name support

  #61645 opened May 2, 2025

• Invalid quick fix for class that's exported as a variable with `isolatedDeclarations`

  #61644 opened May 2, 2025

• Invalid quick fix for function returning `Promise<unknown>` with `isolatedDeclarations`

  #61642 opened May 2, 2025

• Broken inference for generic classes passed to a generic function taking an optional class

  #61633 opened Apr 30, 2025

• typescript auto import includes from `node_modules`

  #61634 opened Apr 30, 2025

• Intellisense for import.meta.resolve()

  #61631 opened Apr 29, 2025

• "Extract..." refactorings not available on right side of addition/multiplication expression

  #61630 opened Apr 29, 2025

• move to new file not working

  #61632 opened Apr 29, 2025

• Prefer local auto-imports over those from external modules

  #61617 opened Apr 25, 2025

• Add option to always inline .json type import

  #61614 opened Apr 25, 2025

153 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• fix `Intl.Segments#containing` return value type

  #61236 commented on May 15, 2025 • 1 new comment

• Thousands of false positives that seem to crash the TypeScript extension

  #60117 commented on May 23, 2025 • 0 new comments

• Rethink AutoImportProvider automatic limits

  #60704 commented on May 23, 2025 • 0 new comments

• rewriteRelativeImportExtensions does not rewrite the extension for an import expressions unless the file is detected to be a module

  #60599 commented on May 23, 2025 • 0 new comments

• disallow comparing to null and undefined unless they are valid cases in strict null mode

  #11920 commented on May 24, 2025 • 0 new comments

• Support @class in JSDoc

  #12681 commented on May 24, 2025 • 0 new comments

• Error inferring types of promise function

  #17873 commented on May 24, 2025 • 0 new comments

• this any typed in some JS object literals

  #22058 commented on May 24, 2025 • 0 new comments

• Suggestion: Type annotations and interfaces for function declarations

  #22063 commented on May 24, 2025 • 0 new comments

• Allow extending types referenced through interfaces

  #31843 commented on May 24, 2025 • 0 new comments

• Support Intellisense for string/number literals in a widened union

  #33471 commented on May 24, 2025 • 0 new comments

• Implicit Symbol.iterator call in for..of loops / spread destructuring doesn't infer `this` generic type parameter

  #38388 commented on May 24, 2025 • 0 new comments

• In JSDoc @type is not a type declaration, which it is much more like type conversion.

  #39650 commented on May 24, 2025 • 0 new comments

• improper declared type cause narrow type not work when its computed type is not union.

  #39114 commented on May 24, 2025 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on May 24, 2025 • 0 new comments

• Error when trying to assign a subclass of a base class with generics to `typeof` of that base class

  #41770 commented on May 24, 2025 • 0 new comments

• Correctly handle generic functions (e.g.: `Object.freeze`) passed as callbacks to generic functions (e.g.: `Array.prototype.map`)

  #42862 commented on May 24, 2025 • 0 new comments

• Broken emit when `Infinity` or `‑Infinity` ends up in a type position

  #42905 commented on May 24, 2025 • 0 new comments

• Typescript 4.2.x - incorrectly infered generic return type of a record union (extra undefined)

  #43943 commented on May 24, 2025 • 0 new comments

• Support inferring `never` as the return type in JavaScript when overriding a class method that returns `never`

  #46791 commented on May 24, 2025 • 0 new comments

• Handle union type of void and Promise<void> in return types

  #43921 commented on Apr 24, 2025 • 0 new comments

• New Feature Requesting for `const` Parameter

  #18497 commented on May 21, 2025 • 0 new comments

• @ts-ignore for the block scope and imports

  #19573 commented on May 21, 2025 • 0 new comments

• Format on paste deletes jsx comment content

  #61749 commented on May 22, 2025 • 0 new comments

• Javascript: Object.assign to assign property values for classes is not respected

  #26792 commented on May 22, 2025 • 0 new comments

• Index signatures in type definitions: now we have `noUncheckedIndexedAccess`, include or omit `undefined`?

  #42810 commented on May 22, 2025 • 0 new comments

• refactor: New file generates import from wrong module specifier

  #58897 commented on May 22, 2025 • 0 new comments

• Missing Handbook Content

  #59930 commented on May 22, 2025 • 0 new comments

• tsconfig - Ignore errors by ids

  #29950 commented on May 22, 2025 • 0 new comments

• I triggered the Debug assertion `Revert #54442 and add a testcase with whatever triggered this` when running with `--diagnostics`

  #61438 commented on May 22, 2025 • 0 new comments

• HOC returned component props can not differ from HOC generic props

  #28938 commented on May 23, 2025 • 0 new comments

• Request: Class Decorator Mutation

  #4881 commented on May 23, 2025 • 0 new comments

• No IntelliSense for generic literal types

  #34771 commented on May 23, 2025 • 0 new comments

• No string completions in type arguments where constrained to string literal union

  #52898 commented on May 23, 2025 • 0 new comments

• Expose design-time type information in TC39 decorator metadata when `emitDecoratorMetadata: true`

  #57533 commented on May 23, 2025 • 0 new comments

• Module resolution: NodeNext breaks typechecking

  #60561 commented on May 23, 2025 • 0 new comments

• Different behavior for type reference directive in nodenext based on whether types are in @types or not

  #47444 commented on May 23, 2025 • 0 new comments

• VSCode Find All References Not Working for Imported Functions

  #59134 commented on May 23, 2025 • 0 new comments

• No file ending when adding import

  #60451 commented on May 23, 2025 • 0 new comments

• fix(53576): Don't remove indentations from JSDoc tag documentation

  #53631 commented on Apr 30, 2025 • 0 new comments

• Attempt to reduce types which are about to produce a complexity error

  #53739 commented on May 1, 2025 • 0 new comments

• fix issue 53775, do not always narrow to property signature

  #54110 commented on May 20, 2025 • 0 new comments

• Replace errorType return with Debug fail in checkExpressionWorker

  #54117 commented on May 13, 2025 • 0 new comments

• Add nested call and new expressions as potential intra expression inference sites

  #54183 commented on May 19, 2025 • 0 new comments

• ignore me, testing build stuff

  #55267 commented on May 7, 2025 • 0 new comments

• Mark all unreachable executable statements in cases and source files

  #55588 commented on May 15, 2025 • 0 new comments

• [wip] Shared resolutions in tsserver

  #55968 commented on May 17, 2025 • 0 new comments

• [wip] Type acquisition and module resolution updates

  #56074 commented on May 16, 2025 • 0 new comments

• Fix(15506) - Disallow non-any/number/string operands on comparisons

  #56666 commented on Apr 30, 2025 • 0 new comments

• Support const assertions and unit type const variable references in constant expressions

  #59475 commented on May 7, 2025 • 0 new comments

• Fixed an issue with mapped property symbol not displaying added `| undefined` when its origin symbol was optional

  #59957 commented on Apr 26, 2025 • 0 new comments

• Add source mappings for serialized properties with available declaration

  #60005 commented on May 14, 2025 • 0 new comments

• Add support for `import defer` proposal

  #60757 commented on May 15, 2025 • 0 new comments

• feat: add Error.isError() to ESNext lib

  #60788 commented on May 2, 2025 • 0 new comments

• fix(57026): Renaming on declaration whose name is a String Literal

  #61353 commented on Apr 25, 2025 • 0 new comments

• Cache mapper instantiations

  #61505 commented on May 6, 2025 • 0 new comments

• Fix #61429: Fast arithmetic type check for type-parameters upper-bounded by `bigint` fixed

  #61571 commented on May 9, 2025 • 0 new comments

• Check expression operand equivalence in isMatchingReference before computing property key equivalence

  #61608 commented on Apr 24, 2025 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on May 24, 2025 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on May 24, 2025 • 0 new comments

• Order of ReadonlySet/ReadonlyMap in union causes differing key inference

  #52313 commented on May 24, 2025 • 0 new comments

• Expression produces a union type that is too complex to represent

  #53234 commented on May 24, 2025 • 0 new comments

• Crash when defining `Array` type via `[]` syntax

  #57009 commented on May 24, 2025 • 0 new comments

• mapped type with remapped keys unexpectedly widens type

  #57265 commented on May 24, 2025 • 0 new comments

• Inconsistent type inference on overloaded function types

  #57351 commented on May 24, 2025 • 0 new comments

• Error not issued when global type is an alias of an object type literal

  #57564 commented on May 24, 2025 • 0 new comments

• Inconsistent typechecking with require() in JS and TS

  #60032 commented on May 24, 2025 • 0 new comments

• Preserve ordered yield types when no logic is involved

  #43150 commented on May 24, 2025 • 0 new comments

• Implement partial type argument inference using the _ sigil

  #26349 commented on Apr 30, 2025 • 0 new comments

• Native support for PnP

  #35206 commented on May 14, 2025 • 0 new comments

• Instantiate conditional types within contextual type instantiation when inference candidates are available

  #48838 commented on Apr 30, 2025 • 0 new comments

• [Experiment] Handle package.json watch in tsc --build

  #48889 commented on Apr 28, 2025 • 0 new comments

• Avoid binding readonly properties as special properties on a function symbol

  #49146 commented on May 14, 2025 • 0 new comments

• Improve signature assignability for argument lists of different lengths

  #49218 commented on Apr 30, 2025 • 0 new comments

• Allow some per file compiler options

  #49886 commented on May 23, 2025 • 0 new comments

• Fix(51162): TS Server fatal error

  #52372 commented on May 13, 2025 • 0 new comments

• Allow nonNullAssertions on possibly-uninitialized auto-typed let variables

  #52483 commented on May 2, 2025 • 0 new comments

• moduleResolution Bundler and importModuleSpecifierEnding

  #60478 commented on Apr 30, 2025 • 0 new comments

• Module "..." cannot be named without a reference to "..." error when decl emitting references to nested modules

  #48212 commented on Apr 30, 2025 • 0 new comments

• Unable to access ServiceWorkerGlobalScope via `self.`

  #14877 commented on Apr 30, 2025 • 0 new comments

• Fix "isolatedDeclarations" QuickFix

  #59112 commented on May 1, 2025 • 0 new comments

• Improve error message for decorator type mismatches

  #4534 commented on May 1, 2025 • 0 new comments

• `import defer` Stage 3 proposal support

  #59391 commented on May 1, 2025 • 0 new comments

• Settings to prefer local import over external import v2

  #56676 commented on May 1, 2025 • 0 new comments

• Wrong import attribute typed as any, but should be typed as string

  #61469 commented on May 1, 2025 • 0 new comments

• JSDoc `@` in the code block is broken

  #61640 commented on May 2, 2025 • 0 new comments

• Type narrowing not working for unions of tuples with object literals

  #31613 commented on May 3, 2025 • 0 new comments

• Instantiation expressions don't filter signatures with non-matching constraints

  #51694 commented on May 4, 2025 • 0 new comments

• `@ts-nocheck` and `@ts-ignore` should also disable suggestions

  #47315 commented on May 4, 2025 • 0 new comments

• Generic values

  #17574 commented on May 5, 2025 • 0 new comments

• Suggest @ts-expect-error as Quick Fix

  #59934 commented on May 5, 2025 • 0 new comments

• ServiceWorkerRegistration.Update() should return Promise<ServiceWorkerRegistration>

  #31502 commented on May 6, 2025 • 0 new comments

• Allow async functions to return union type T | Promise<T>

  #33595 commented on May 6, 2025 • 0 new comments

• tsconfig.json option removeComments removes comments from both declaration.d.ts and source .js files, it would be convenient to only remove comments from .js files.

  #45187 commented on May 6, 2025 • 0 new comments

• Autocomplete on extends keyof generic

  #28662 commented on May 6, 2025 • 0 new comments

• Proposal: Make base class expressions able to access class type parameters

  #36406 commented on May 7, 2025 • 0 new comments

• TypeScript fails to find declaration file of a peer project after it rebuilds in a monorepo

  #61610 commented on Apr 24, 2025 • 0 new comments

• Add CookieStore API types

  #61604 commented on Apr 24, 2025 • 0 new comments

• Hover documentation for typescript uses jsdoc rules and not tsdoc

  #61603 commented on Apr 24, 2025 • 0 new comments

• Type narrowing in one case statement does not propagate to the next case

  #56361 commented on Apr 25, 2025 • 0 new comments

• Switch statement over a union of literals is not exhaustive when checking against enum members

  #53736 commented on Apr 25, 2025 • 0 new comments

• Unexpected "'Type' is declared but its value is never read." error with jsdoc @import syntax

  #60908 commented on Apr 25, 2025 • 0 new comments

• TypeScript code suggestions include inaccessible private fields from base classes

  #61462 commented on Apr 25, 2025 • 0 new comments

• References from dynamic imports not recognized when indirectly exporting variable

  #61366 commented on Apr 25, 2025 • 0 new comments

• Show deprecated strikethrough for JSX properties when union type

  #57584 commented on Apr 25, 2025 • 0 new comments

• JSDocs don't support properties on functions

  #56615 commented on Apr 26, 2025 • 0 new comments

• TypeScript complains about overwriting .d.ts files that are potentially known outputs

  #16749 commented on Apr 26, 2025 • 0 new comments

• Typescript can't infer types when using Proxy

  #20846 commented on Apr 26, 2025 • 0 new comments

• Allow trailing commas in type arguments

  #21984 commented on Apr 26, 2025 • 0 new comments

• Allow bigint as an index type because number is allowed too

  #46395 commented on Apr 26, 2025 • 0 new comments

• Inconsistent behaviour of `-?`

  #59948 commented on Apr 27, 2025 • 0 new comments

• Add Temporal (Stage 3) types

  #60164 commented on Apr 28, 2025 • 0 new comments

• Strict null checks for Map members

  #9619 commented on Apr 28, 2025 • 0 new comments

• MsBuild: Target `TypeScriptDeleteOutputFromOtherConfigs` can grab tsc.out from other Configuration

  #50428 commented on Apr 28, 2025 • 0 new comments

• Suggestion: Allow ES6 export syntax in namespaces

  #39865 commented on Apr 29, 2025 • 0 new comments

• "The inferred type of X cannot be named without a reference to Y" (TS2742) still happens, when working with npm link to link packages manually

  #58914 commented on May 13, 2025 • 0 new comments

• Decouple jsx element type from jsx factory return type and sfc return type

  #21699 commented on May 14, 2025 • 0 new comments

• `asserts this is T` does not narrow type of `this`

  #60140 commented on May 14, 2025 • 0 new comments

• Alias for TypeScript declaration emitting

  #30952 commented on May 15, 2025 • 0 new comments

• [Suggestion] a "const mode" where `as const` is by default for literals

  #51930 commented on May 15, 2025 • 0 new comments

• MSBuild integration with ASP.NET Core

  #60538 commented on May 15, 2025 • 0 new comments

• Ignore non-ts/js files in move to file refactor

  #56749 commented on May 16, 2025 • 0 new comments

• C++-style `const` modifier on class members

  #58236 commented on May 16, 2025 • 0 new comments

• VSCode auto-import ignores typescript.preferences.importModuleSpecifierEnding when using a path from the package.json imports

  #60423 commented on May 17, 2025 • 0 new comments

• Excessive stack depth comparing types with TS 3.2

  #29112 commented on May 17, 2025 • 0 new comments

• Supply label names in tuple types using type-level strings

  #56093 commented on May 18, 2025 • 0 new comments

• A mixin class must have a constructor with a single rest parameter of type 'any[]'.

  #37142 commented on May 18, 2025 • 0 new comments

• Support `proposal-json-parse-with-source` (`JSON.rawJSON()`, `JSON.isRawJSON()`, `context` parameter of `reviver` function, etc...)

  #61330 commented on May 19, 2025 • 0 new comments

• Numeric Range Types (Feature Update)

  #54925 commented on May 19, 2025 • 0 new comments

• Add option to include files in type checking, but not compiling

  #54410 commented on May 19, 2025 • 0 new comments

• [PROPOSAL] Support @augments/@extends attached to an Object types

  #40071 commented on May 19, 2025 • 0 new comments

• suggestion: explicit "tuple" syntax

  #16656 commented on May 20, 2025 • 0 new comments

• tsconfig should support suffix `.jsonc`

  #43121 commented on May 21, 2025 • 0 new comments

• Pipe/flow/chain type support

  #30370 commented on May 21, 2025 • 0 new comments

• Allow base class expressions to reference class type parameters as long as the type param is not used on the static side of the resulting class

  #55972 commented on May 7, 2025 • 0 new comments

• @deprecated strikethrough doesn't appear in many cases, such as JSX elements, const arrow functions, or properties.

  #39374 commented on May 7, 2025 • 0 new comments

• Intersection type in template literal is not reduced to its bare type

  #57918 commented on May 8, 2025 • 0 new comments

• `Element.getElementsByTagName` marked as deprecated

  #61264 commented on May 8, 2025 • 0 new comments

• tsc --init update 2024

  #58420 commented on May 8, 2025 • 0 new comments

• Cannot Optionalize Class Getters

  #14417 commented on May 8, 2025 • 0 new comments

• Assigning window.location after 5.8.2 upgrade fails

  #61335 commented on May 8, 2025 • 0 new comments

• [Feature request]type level equal operator

  #48100 commented on May 8, 2025 • 0 new comments

• Support a @nonnull/@nonnullable JSDoc assertion comment

  #23405 commented on May 8, 2025 • 0 new comments

• Exact Types

  #12936 commented on May 9, 2025 • 0 new comments

• `// @ts-expect-deprecation` and `// @ts-expect-no-deprecation` support like `// @ts-expect-error`

  #50369 commented on May 9, 2025 • 0 new comments

• Support some non-structural (nominal) type matching

  #202 commented on May 10, 2025 • 0 new comments

• Confusing error message when there is an accidental circular reference in monorepo

  #61577 commented on May 11, 2025 • 0 new comments

• unique symbol + interface + mixin causes TS4058 ("but cannot be named")

  #57165 commented on May 11, 2025 • 0 new comments

• Need an option for ignore error when emit declaration

  #54305 commented on May 12, 2025 • 0 new comments

• Add types for RegExp.escape

  #61321 commented on May 12, 2025 • 0 new comments

• type destructuring

  #35396 commented on May 13, 2025 • 0 new comments

• Disable type checking for node_modules entirely

  #40426 commented on May 13, 2025 • 0 new comments

• source.organizeImports affects export object

  #61588 commented on May 13, 2025 • 0 new comments