1 Release published by 1 person

• v5.3.2 TypeScript 5.3

  published Nov 20, 2023

31 Pull requests merged by 12 people

• 🤖 Pick PR #56504 (Fixed an issue in boolean compariso...) into release-5.3

  #56512 merged Nov 22, 2023

• Fixed an issue in boolean comparison narrowing when the reference is an optional chain

  #56504 merged Nov 22, 2023

• Fix typo in cherry-pick job

  #56511 merged Nov 22, 2023

• Fix cherry-pick job for unmerged PRs

  #56510 merged Nov 22, 2023

• Fix repository_dispatch syntax

  #56499 merged Nov 22, 2023

• Remove open-cherry-pick-pr.mjs

  #56498 merged Nov 22, 2023

• Add git user info to cherry-pick task

  #56495 merged Nov 21, 2023

• Fix branch name in new cherry pick workflow

  #56494 merged Nov 21, 2023

• Add a new cherry-pick GHA workflow

  #56493 merged Nov 21, 2023

• fix(47327): Inlay Hint for TypeScript broken for spread operation

  #56368 merged Nov 21, 2023

• When reparsing top level await dont set original node for the new source file

  #56439 merged Nov 21, 2023

• Avoid incorrect narrowings using const variables from binding elemens with literal initializers

  #56347 merged Nov 21, 2023

• Make AssertEntry and AssertClause interfaces

  #56485 merged Nov 21, 2023

• Cherry-pick #56489 into release-5.3

  #56490 merged Nov 21, 2023

• Pick #56485 into release-5.3

  #56486 merged Nov 21, 2023

• Make our dts files compile when exactOptionalPropertyTypes is enabled downstream

  #56489 merged Nov 21, 2023

• Fix support for intersections in template literal placeholder types

  #56434 merged Nov 21, 2023

• Improve constraints of conditional types applied to constrained type variables

  #56004 merged Nov 21, 2023

• Only call `getLowerBoundOfKeyType` on non-generic mapped types

  #56280 merged Nov 21, 2023

• Propagate `intersectionState` in `typeRelatedToSomeType`

  #56207 merged Nov 21, 2023

• Handle file name casing when deduplicating results from the project

  #56438 merged Nov 21, 2023

• Skip invalid completion check immediately after newline

  #55061 merged Nov 20, 2023

• Bump the github-actions group with 1 update

  #56468 merged Nov 20, 2023

• Add a test case for lack of duplicate property errors

  #56348 merged Nov 20, 2023

• Error on export default of type: issue https://github.com/microsoft/TypeScript/issues/55087

  #55097 merged Nov 20, 2023

• Pick #56449 into release-5.3

  #56451 merged Nov 18, 2023

• feat(55737): JSDoc {@link} support all 4 types of links

  #56244 merged Nov 17, 2023

• Elide re-exports of unresolved type-only imports

  #56449 merged Nov 17, 2023

• fix(54268): Renaming JSDoc @param symbol only renames the first instance

  #56226 merged Nov 17, 2023

• Remove SuppressedErrorConstructor's extends clause

  #55817 merged Nov 16, 2023

• Filtered out types from import suggestions in JS files

  #53619 merged Nov 16, 2023

14 Pull requests opened by 8 people

• Consistently return `errorType` when detecting circularities

  #56429 opened Nov 16, 2023

• Experiment: Produce wide index signatures from the spread of an index signature

  #56441 opened Nov 17, 2023

• Make isTypeAssignableTo public on TypeChecker

  #56448 opened Nov 17, 2023

• Add GHA workflow that auto LKGs on pushes to release branches

  #56453 opened Nov 18, 2023

• Infer from annotated parameters of context sensitive functions in the first inference pass

  #56460 opened Nov 19, 2023

• Fixed an issue with broken `await using` declarations in `for of` loops

  #56466 opened Nov 19, 2023

• Fix "Extract to type alias" not available at end of span

  #56467 opened Nov 19, 2023

• Replace disk path operations to use fileNames instead of path

  #56476 opened Nov 21, 2023

• Fast path for unions of string literals only

  #56487 opened Nov 21, 2023

• Handle package json watch life time

  #56488 opened Nov 21, 2023

• 🤖 Pick PR #56434 (Fix support for intersections in te...) into release-5.3

  #56491 opened Nov 21, 2023

• Improve contextually typed parameters with initializers

  #56506 opened Nov 22, 2023

• fix(42220): Missing 'used before declaration' for class expression used in own computed property name

  #56514 opened Nov 22, 2023

• Reduce intersections of constrained type variables and primitive types

  #56515 opened Nov 22, 2023

42 Issues closed by 16 people

• Why is TypeScript not detecting implicit use of any in nested object/array properties?

  #56454 closed Nov 23, 2023

• RegExpExecArray has incorrect type for named groups

  #56457 closed Nov 23, 2023

• Invalid type after destructuring a Record

  #56456 closed Nov 23, 2023

• [5.3] Type narrowing regression with property comparison to boolean false

  #56482 closed Nov 22, 2023

• Inlay Hint for TypeScript broken for spread operation

  #47327 closed Nov 21, 2023

• `Debug Failure. False expression: Paths must either both be absolute or both be relative`

  #54057 closed Nov 21, 2023

• In "declare global" blocks, allow access of block-scoped variables in globalThis

  #56442 closed Nov 21, 2023

• [5.3] Deprecated types (AssertEntry, AssertClause) redefined as type aliases, rather than interfaces

  #56477 closed Nov 21, 2023

• [5.3] Type error in typescript.d.ts with exactOptionalPropertyTypes = true

  #56478 closed Nov 21, 2023

• no error report for auto prop type

  #56461 closed Nov 21, 2023

• Add option to default `this` to class type in class methods, rather than `any`

  #56452 closed Nov 21, 2023

• Template Literal Types reduces string union

  #54177 closed Nov 21, 2023

• Conditional types are incorrectly narrowed

  #30152 closed Nov 21, 2023

• Crash due to circularity in `getIndexTypeForMappedType`

  #56232 closed Nov 21, 2023

• [5.0] Intersected array of intersection types with union field not compatible

  #53412 closed Nov 21, 2023

• Incorrect rename when using npm workspaces and project references

  #53041 closed Nov 21, 2023

• Memory allocation failure with TS 5.3.1-rc

  #56470 closed Nov 20, 2023

• Should not block completions when `let a` on the previous line

  #54729 closed Nov 20, 2023

• Duplicate property error when a computed property names come from an object destructuring with the same default value

  #56341 closed Nov 20, 2023

• Create a file parsing cache to improve the speed of opening a large-scale project not for the first time.

  #56469 closed Nov 20, 2023

• Unexpected 5.3.2 version tagged on npm

  #56473 closed Nov 20, 2023

• Export default of type emits invalid code

  #55087 closed Nov 20, 2023

• Type cast is failing to check when there is more than 1 object in array

  #56446 closed Nov 20, 2023

• `extends` expansion may not working with function return type

  #56443 closed Nov 20, 2023

• Implement type narrowing for optional chaining operator on unions

  #56440 closed Nov 20, 2023

• Incorrect type narrowing of variables from outside scope in IIAFE's

  #56447 closed Nov 20, 2023

• What is the type of T['x'] when T is type param of a generic function?

  #56388 closed Nov 18, 2023

• Ternary operator type daemon failed

  #56407 closed Nov 18, 2023

• JSDoc {@link} support all 4 types of links

  #55737 closed Nov 17, 2023

• Invalid JavaScript output with re-exported unresolved import types (regression)

  #56445 closed Nov 17, 2023

• `allowSyntheticDefaultImports` doesn't work when importing a typescript module

  #56435 closed Nov 17, 2023

• Renaming JSDoc @param symbol only renames the first instance

  #54268 closed Nov 17, 2023

• [IDE feature]Adding auto completion when typing `.` or something else as a prefix of a field of a type like language zig.

  #56444 closed Nov 17, 2023

• tsc API: undefined JSX element attribute value incorrectly showing syntax kind of 79 or 80

  #56399 closed Nov 17, 2023

• generic looses `undefined` when inferring from optional parameter

  #56386 closed Nov 17, 2023

• baseUrl is used to create reference type path in declaration file

  #39695 closed Nov 16, 2023

• SuppressedError constructor should not have Error constructor overloads

  #55674 closed Nov 16, 2023

• Upgrading to Typescript Version > 5 causes an out of memory issue

  #56428 closed Nov 16, 2023

• Filter out types from esm import suggestions in JavaScript

  #53339 closed Nov 16, 2023

• 5.1.3 new "feature"? Branded types are preserved in `const` template literal

  #54648 closed Nov 16, 2023

• Incorrect handling of template literals + intersections

  #53427 closed Nov 16, 2023

• Parameters<F> does not consider all function overloads

  #56430 closed Nov 16, 2023

30 Issues opened by 24 people

• Make Intl locales arrays readonly

  #56513 opened Nov 22, 2023

• Debug Failure with `strictFunctionTypes`: type provided should not be a non-generic 'promise'-like

  #56509 opened Nov 22, 2023

• `TypeError: state.conditions.includes is not a function` in recent TS versions when running with ts-node

  #56508 opened Nov 22, 2023

• Support also css files for use with import attributes

  #56507 opened Nov 22, 2023

• Contextual `never` parameter type gets precedence over the initializer's type

  #56505 opened Nov 22, 2023

• `this` is incorrect for static fields and static accessors within decorators

  #56503 opened Nov 22, 2023

• [Rename symbol command] Remove unnecessary named import

  #56497 opened Nov 21, 2023

• Regression in 5.3 tsconfig cannot extend node module

  #56492 opened Nov 21, 2023

• `keyof` losing type information when used with generics extend

  #56484 opened Nov 21, 2023

• Type definitions for `Promise.withResolvers()`

  #56483 opened Nov 21, 2023

• Support different typings with import attributes

  #56481 opened Nov 21, 2023

• visitor of visitEachChild doesn't support returning InferTypeNode

  #56480 opened Nov 21, 2023

• tsc declaration-emits `any` type for self-referring class expressions

  #56479 opened Nov 21, 2023

• Latter type parameters are not suggested in constraints of the preceding ones

  #56474 opened Nov 20, 2023

• Donating Funds to TypeScript

  #56471 opened Nov 20, 2023

• [ServerErrors][TypeScript] 5.4.0-dev.20231119

  #56465 opened Nov 19, 2023

• [ServerErrors][JavaScript] 5.4.0-dev.20231119

  #56464 opened Nov 19, 2023

• [NewErrors] 5.4.0-dev.20231119 vs 5.2.2

  #56463 opened Nov 19, 2023

• Unclear behavior in recursion type

  #56462 opened Nov 19, 2023

• Inference from annotated parameters of context-sensitive functions is order dependent

  #56459 opened Nov 19, 2023

• Module resolution: `d.ts` files do not get treated depending on the importer's `type` in package.json, causing issues with `resolution-modes`

  #56455 opened Nov 18, 2023

• [js/ts] Feature request: In Quick Fix menu, show also a dynamic import variant

  #56472 opened Nov 18, 2023

• Hyperlink generated by @link jumps to import statement for named or default imports, not symbol definition

  #56475 opened Nov 17, 2023

• Design Meeting Notes, 11/17/2023

  #56450 opened Nov 17, 2023

• Design Meeting Notes, 11/15/2023

  #56437 opened Nov 16, 2023

• Proposal for enhancing ways to extend tsconfig file

  #56436 opened Nov 16, 2023

• Error from parameter assignability incorrectly reported on satisfies keyword

  #56433 opened Nov 16, 2023

• Expand and shrink selection around JavaScript `if-elseif-else` statements

  #56432 opened Nov 16, 2023

• Object spreading produces wrong type with non-literal keys

  #56431 opened Nov 16, 2023

• improvements for non-experimental decorator types

  #56426 opened Nov 16, 2023

98 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.

• Specialized parsing error for apparent JSX tag in .ts file

  #56101 commented on Nov 21, 2023 • 12 new comments

• Object spread drops index signature

  #27273 commented on Nov 16, 2023 • 10 new comments

• Enforce identical enum values in compatibility checks

  #55924 commented on Nov 17, 2023 • 10 new comments

• Proposal: Conditional Compilation

  #3538 commented on Nov 21, 2023 • 8 new comments

• Isolated declarations

  #53463 commented on Nov 21, 2023 • 8 new comments

• Object union member functions that return never are incorrectly narrowed

  #56425 commented on Nov 17, 2023 • 6 new comments

• fix(50303): Using @linkcode in combination with private methods causes TS1003 in JavaScript files.

  #56338 commented on Nov 21, 2023 • 6 new comments

• Add full type hover popup to VS Code commands

  #35601 commented on Nov 20, 2023 • 4 new comments

• Various Intl-related constructors and methods reject Intl.Locale objects in locales parameter

  #52946 commented on Nov 23, 2023 • 4 new comments

• Ambient Module Declarations for Import Assertions

  #46135 commented on Nov 22, 2023 • 3 new comments

• Add auto-import for the `package.json` `imports` field

  #55015 commented on Nov 22, 2023 • 3 new comments

• Rewrite createTextWriter to buffer appends

  #55657 commented on Nov 17, 2023 • 3 new comments

• Use sameMap in mapType to avoid allocation when possible

  #56070 commented on Nov 17, 2023 • 3 new comments

• Check auto-import completion for spread assignment

  #56247 commented on Nov 22, 2023 • 3 new comments

• Inferring return types with import attributes causes debug assertion.

  #56394 commented on Nov 16, 2023 • 2 new comments

• Types dependent on constants not narrowing correctly

  #56417 commented on Nov 16, 2023 • 2 new comments

• Strict index signatures option

  #56378 commented on Nov 17, 2023 • 2 new comments

• TypeScript 5.3 Iteration Plan

  #55486 commented on Nov 17, 2023 • 2 new comments

• What’s confusing about modules?

  #51876 commented on Nov 19, 2023 • 2 new comments

• Typescript [4.8.2] is adding invalid javascript for *.cjs files

  #50647 commented on Nov 20, 2023 • 2 new comments

• Intellisense not resolving modules when using `exports` in package.json

  #56412 commented on Nov 20, 2023 • 2 new comments

• TypeScript class method decorator not rendering properly in version >= 1.63.2

  #47679 commented on Nov 21, 2023 • 2 new comments

• Inlay hints computation can't handle ObjectBindingPattern within a type

  #56380 commented on Nov 21, 2023 • 2 new comments

• Generated d.ts includes implicit any for recursive types

  #55832 commented on Nov 21, 2023 • 2 new comments

• Relate control flow to conditional types in return types

  #33912 commented on Nov 21, 2023 • 2 new comments

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

  #56361 commented on Nov 23, 2023 • 2 new comments

• fix inlay hints for template literal type

  #56309 commented on Nov 21, 2023 • 2 new comments

• Allow variance annotations on generic references

  #56418 commented on Nov 19, 2023 • 2 new comments

• TS Server fatal error: Cannot read properties of undefined (reading 'charCount')

  #56413 commented on Nov 16, 2023 • 1 new comment

• JSDoc `@overload`s on constructors don't capture class type parameters, can dictate their return type

  #55919 commented on Nov 16, 2023 • 1 new comment

• Request: Class Decorator Mutation

  #4881 commented on Nov 16, 2023 • 1 new comment

• Incorrect typescript errors produced when `declaration` and `noEmit` are both `true`

  #52927 commented on Nov 16, 2023 • 1 new comment

• Idea for allowing destructuring non-common property of discriminated unions

  #46318 commented on Nov 17, 2023 • 1 new comment

• Convert named tuple into object literal type.

  #41594 commented on Nov 17, 2023 • 1 new comment

• A way to specify class properties using JSDoc

  #26811 commented on Nov 17, 2023 • 1 new comment

• @ts-ignore for the block scope and imports

  #19573 commented on Nov 17, 2023 • 1 new comment

• Defining a type predicate breaks inheritance for methods with mapped types

  #56133 commented on Nov 17, 2023 • 1 new comment

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

  #16749 commented on Nov 18, 2023 • 1 new comment

• Consider property access a form of type guards

  #1260 commented on Nov 18, 2023 • 1 new comment

• "Extract to type alias" not available at end of span

  #56401 commented on Nov 19, 2023 • 1 new comment

• Code actions "Move to file" and "Move to new file" are shown everywhere

  #56416 commented on Nov 20, 2023 • 1 new comment

• JSDoc unexpected leading whitespace behaviour with `@example` and `<caption>`

  #43955 commented on Nov 20, 2023 • 1 new comment

• Support import types in JSDoc links

  #43950 commented on Nov 20, 2023 • 1 new comment

• Proposal: Operator overloading and primitive type declarations

  #42218 commented on Nov 21, 2023 • 1 new comment

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

  #26792 commented on Nov 21, 2023 • 1 new comment

• Suggestion: one-sided or fine-grained type guards

  #15048 commented on Nov 21, 2023 • 1 new comment

• `typeof class`

  #41581 commented on Nov 21, 2023 • 1 new comment

• Add Array.prototype.groupBy[toMap] to JS lib definitions.

  #47171 commented on Nov 21, 2023 • 1 new comment

• Fix ternary formatting for all cases.

  #54362 commented on Nov 22, 2023 • 1 new comment

• Suggestion for Dependent-Type-Like Functions: Conservative Narrowing of Generic Indexed Access Result Type

  #33014 commented on Nov 22, 2023 • 1 new comment

• Allow ignoring certain TS suggestion-level diagnostic codes

  #28825 commented on Nov 22, 2023 • 1 new comment

• Built-in Symbol.iterator methods return IterableIterator<T> extending Iterator<T>, not Iterator<T, undefined>

  #52998 commented on Nov 22, 2023 • 1 new comment

• Associate HTML Elements and EventMaps in a map

  #40689 commented on Nov 22, 2023 • 1 new comment

• Consult `package.json` contents when creating `tsconfig.json` under `tsc --init` to determine better defaults

  #51207 commented on Nov 22, 2023 • 1 new comment

• Add JSON schema to the `typescript` package for `tsconfig.json` and `jsconfig.json`

  #54192 commented on Nov 22, 2023 • 1 new comment

• FormData methods should take a Generic

  #43797 commented on Nov 22, 2023 • 1 new comment

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

  #48838 commented on Nov 22, 2023 • 1 new comment

• Add noUnnecessaryTypeAssertions compiler option, quickfix

  #51527 commented on Nov 21, 2023 • 1 new comment

• Apply a contextual type to empty arrays

  #51882 commented on Nov 20, 2023 • 1 new comment

• Consistently allow Locale objects in locale list params

  #52996 commented on Nov 22, 2023 • 1 new comment

• Fxied declaration emit for JS files when `module.exports` is assigned a non-alias value and when it has extra type members

  #56243 commented on Nov 17, 2023 • 1 new comment

• Fix for Issue 56013

  #56373 commented on Nov 21, 2023 • 1 new comment

• typescript.preferences.autoImportFileExcludePatterns unable to exclude a specific file with TS aliases

  #56415 commented on Nov 16, 2023 • 0 new comments

• tsc --watch initial build 3x slower than tsc

  #34119 commented on Nov 16, 2023 • 0 new comments

• Constructor generic types and `this` parameter (TS1092, TS2681)

  #40451 commented on Nov 16, 2023 • 0 new comments

• TypeScript silently omits enum assignment type error between two enums with the same name

  #55915 commented on Nov 17, 2023 • 0 new comments

• DOM: Font Loading API

  #13569 commented on Nov 21, 2023 • 0 new comments

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

  #11920 commented on Nov 22, 2023 • 0 new comments

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

  #33471 commented on Nov 22, 2023 • 0 new comments

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

  #39114 commented on Nov 22, 2023 • 0 new comments

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

  #39650 commented on Nov 22, 2023 • 0 new comments

• Class Property Inference from Constructors fails for a simple object declared in place

  #39681 commented on Nov 22, 2023 • 0 new comments

• Hoisted function declarations should be assigned to `exports` before any `require` calls

  #39853 commented on Nov 22, 2023 • 0 new comments

• Support “Arbitrary module namespace identifier names”

  #40594 commented on Nov 22, 2023 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Nov 22, 2023 • 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 Nov 22, 2023 • 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 Nov 22, 2023 • 0 new comments

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

  #46791 commented on Nov 22, 2023 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Nov 22, 2023 • 0 new comments

• [NewErrors] 4.8.0-dev.20220609 vs 4.7.3

  #49460 commented on Nov 22, 2023 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Nov 22, 2023 • 0 new comments

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

  #52313 commented on Nov 22, 2023 • 0 new comments

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

  #53234 commented on Nov 22, 2023 • 0 new comments

• Re-exporting `default` from a dependency in JavaScript produces an invalid declaration file

  #55082 commented on Nov 22, 2023 • 0 new comments

• Variance Annotations do not impact "infer" correctly

  #55920 commented on Nov 22, 2023 • 0 new comments

• Certain resolution-dependent enum emit isn't correctly flagged as an error under `isolatedModules`

  #56153 commented on Nov 22, 2023 • 0 new comments

• [wip] Type acquisition and module resolution updates

  #56074 commented on Nov 21, 2023 • 0 new comments

• Instantiate `nameType` of mapped types when creating their index types

  #56246 commented on Nov 17, 2023 • 0 new comments

• Defer conditional types with parenthesized multi-element tuple types in `extends` clause

  #56271 commented on Nov 20, 2023 • 0 new comments

• fix(56127): TypeScript "Move to File" refactor causes self import

  #56294 commented on Nov 20, 2023 • 0 new comments

• Default reverse mapped type inference to its constraint

  #56300 commented on Nov 20, 2023 • 0 new comments

• Fixed dependent variables narrowing when they are declared using nested binding patterns

  #56306 commented on Nov 21, 2023 • 0 new comments

• Avoid dependent parameters narrowings if any declared symbol of the parameter is assigned to

  #56313 commented on Nov 21, 2023 • 0 new comments

• Fixed an issue with property type display when contextual type is a union

  #56318 commented on Nov 21, 2023 • 0 new comments

• Fixed an issue with write type being left as non-instantiated when coming from a merged instantiation

  #56322 commented on Nov 21, 2023 • 0 new comments

• fix(48260): Incorrect parameter hint is highlighted when arguments contain spread syntax

  #56372 commented on Nov 22, 2023 • 0 new comments

• ImportAttributes should go through the same emit phases when in an ImportTypeNode

  #56395 commented on Nov 20, 2023 • 0 new comments

• Up timeout on cherry-pick branch push

  #56423 commented on Nov 16, 2023 • 0 new comments