Insights: microsoft/TypeScript

4 Releases published by 1 person

• v4.9-beta TypeScript 4.9 Beta

  published Mar 16, 2023

• v4.9-rc TypeScript 4.9 RC

  published Mar 16, 2023

• v5.0-rc TypeScript 5.0 RC

  published Mar 16, 2023

• v5.0.2 TypeScript 5.0

  published Mar 16, 2023

61 Pull requests merged by 15 people

• Make deeplyNestedTemplateLiteralIntersection run a little faster

  #53401 merged Mar 21, 2023

• Avoid rewriting homomorphic mapped types with homomorphic instantiations

  #53215 merged Mar 21, 2023

• Ensure rest type for source parameter is readonly in relations

  #53258 merged Mar 20, 2023

• Fix resolving entity name of namespace member after alias is merged with type

  #53387 merged Mar 20, 2023

• Make function properties context-sensitive based on their return statements

  #50903 merged Mar 20, 2023

• Consider all union types matching discriminator for excess property checks

  #51884 merged Mar 20, 2023

• Remove incorrect handling of intersections in getStringMappingType

  #53383 merged Mar 20, 2023

• Report error if commanline only option is specified in tsconfig

  #53397 merged Mar 20, 2023

• Consistently use '...args' for diagnostic args

  #53193 merged Mar 20, 2023

• Fix crash when importsNotUsedAsValues is set alongside verbatimModuleSyntax

  #53386 merged Mar 20, 2023

• Add missing ambient check to `verbatimModuleSyntax` `export =` error

  #53385 merged Mar 20, 2023

• Refactor config file parsing such that json and jsonSourceFile api use same paths

  #53331 merged Mar 20, 2023

• Fixed issues with inference from nested tuple types of the same shape

  #49226 merged Mar 20, 2023

• feat(25758): Computed properties no throws if there is a duplicate

  #49848 merged Mar 20, 2023

• Fixed an issue with not being able to use mapped type over union constraint as rest param

  #49947 merged Mar 20, 2023

• Remove random code from fourslash test

  #53335 merged Mar 20, 2023

• Normalize generic tuple types with `Simplifiable` elements

  #52385 merged Mar 20, 2023

• Do not infer to mapped types from implied index signatures created by rest bindings

  #52632 merged Mar 20, 2023

• Fix package-lock update task

  #53336 merged Mar 20, 2023

• Remove most "import * as ts" imports, except for const enum reverse mapping and plugins

  #53329 merged Mar 20, 2023

• Change ParamaterDecorator to allow an undefined propertyKey

  #53365 merged Mar 20, 2023

• Revert PR #53301

  #53366 merged Mar 20, 2023

• Rewrite getPropFromRaw slightly to surface T in the parameters

  #53301 merged Mar 20, 2023

• Revert fix for intersections in template literals, fix differently

  #52836 merged Mar 20, 2023

• Improve detection of type variables in instantiated object types

  #53246 merged Mar 19, 2023

• Improve contextual typing of ending tuple elements

  #53036 merged Mar 19, 2023

• Create baselines for tsserver event tests

  #53330 merged Mar 17, 2023

• Fix missing reference in js (#50509)

  #53000 merged Mar 17, 2023

• Disallow instantiation expressions on the right side of instanceof

  #53323 merged Mar 17, 2023

• Convert config file parsing tests to baseline for easier future update verification and adds missing location verification

  #53324 merged Mar 17, 2023

• Allow implicit return with explicit `undefined` return type

  #53092 merged Mar 17, 2023

• Fast path for negative case when relating to unions of primtives

  #53192 merged Mar 17, 2023

• Bump TS devDep to ^5.0.2

  #53299 merged Mar 17, 2023

• Add an extra test case related to return statements and annotated return types

  #52628 merged Mar 16, 2023

• Set minimal workflow permissions

  #53297 merged Mar 16, 2023

• Skip asking for jsdoc in checkObjectLiteral for enums in TS

  #53117 merged Mar 16, 2023

• Collect contravariant-only inference candidates from shorter annotated functions

  #52609 merged Mar 16, 2023

• Fix esDecorators evaluation test on Node 16+

  #53175 merged Mar 16, 2023

• Avoid bogus circularity error on context sensitive expando assingment

  #50487 merged Mar 16, 2023

• Revert PR #52589

  #53280 merged Mar 16, 2023

• Revert PR #51580

  #53283 merged Mar 16, 2023

• Make perfLogger potentially undefined rather than using a noop logger

  #53229 merged Mar 15, 2023

• 🤖 Pick PR #53268 (fix(53204): Bug: __runInitializers(...) into release-5.0

  #53273 merged Mar 15, 2023

• Fixed an issue with spreading a spreadable generic expression into generic JSX

  #51580 merged Mar 15, 2023

• fix(53204): Bug: __runInitializers(this) is emitted before super() call

  #53268 merged Mar 15, 2023

• Ensure moduleType is structured during cloneTypeAsModuleType

  #51136 merged Mar 15, 2023

• Do not resolve apparent type of mapped types with a tuple constraint

  #52651 merged Mar 15, 2023

• Fixed symbol declarations for generic filtering mapped types

  #53207 merged Mar 15, 2023

• Add intra expression inference sites based on JSX attributes

  #52837 merged Mar 15, 2023

• Fix #33569 - Enable declaration emit for late-bound function members

  #53034 merged Mar 15, 2023

• Move smoke test package script into scripts

  #53245 merged Mar 14, 2023

• 🤖 Pick PR #53174 (Remove old references to Node v4, s...) into release-5.0

  #53189 merged Mar 14, 2023

• Defer resolution of indexed access types with reducible object types

  #53098 merged Mar 14, 2023

• 🤖 Pick PR #53240 (Allow 'verbatimModuleSyntax' with t...) into release-5.0

  #53253 merged Mar 14, 2023

• Allow 'verbatimModuleSyntax' with transpileModule

  #53240 merged Mar 14, 2023

• fix(53242): Wrong error message when defined abstract property in non-abstract class

  #53251 merged Mar 14, 2023

• Enable corepack in CI

  #53152 merged Mar 14, 2023

• Add an extra test case for mapped type relationships

  #53232 merged Mar 14, 2023

• Test and LKG before push in dep bump

  #53151 merged Mar 14, 2023

• Add custom GHA report for package size

  #53241 merged Mar 14, 2023

• Bump TS devDep to 5.0 RC to fix eslint

  #53243 merged Mar 14, 2023

30 Pull requests opened by 12 people

• fix: also respect compilerOptions.moduleResolution for ending preferences

  #53244 opened Mar 14, 2023

• Force add lib in workflows which commit LKG

  #53248 opened Mar 14, 2023

• Provide snippet completions for @param in JSDoc

  #53260 opened Mar 14, 2023

• Defer type comparability check for assertions

  #53261 opened Mar 14, 2023

• fix(53257): Illegal .d.ts class property definition for "constructor" generated from JavaScript

  #53266 opened Mar 15, 2023

• 🤖 Pick PR #53207 (Fixed symbol declarations for gener...) into release-5.0

  #53271 opened Mar 15, 2023

• Adds linked editing for JSX tags

  #53284 opened Mar 16, 2023

• Bump minimum Node to 14.17, ES to 2020 for TS 5.1

  #53291 opened Mar 16, 2023

• [experiment] Set a timeout for ATA npm installs

  #53292 opened Mar 16, 2023

• Test making the in-discussion `strictInstanceOfTypeParameters` flag to always be true

  #53300 opened Mar 16, 2023

• fix(53181): Overloads Are Not Generated as Expected When Using JsDocOverload Tag to Declare Overloads of Functions Assigned to a Prototype

  #53317 opened Mar 17, 2023

• fix(53289): TypeScript cannot auto-complete keyword typeof

  #53325 opened Mar 17, 2023

• Mark inaccessible codefix parameter types as `any`

  #53327 opened Mar 17, 2023

• Exclude JsxImport during finding references

  #53328 opened Mar 17, 2023

• Fix the type of `copyWithin`

  #53340 opened Mar 18, 2023

• More complete check in isConstTypeVariable

  #53341 opened Mar 18, 2023

• Avoid calculating all properties of UnionOrIntersectionType when caller can exit early

  #53346 opened Mar 19, 2023

• Fix subtype reduction involving type variables with union constraints

  #53351 opened Mar 19, 2023

• Allowed tuples to have both named and anonymous members

  #53356 opened Mar 19, 2023

• Cache getConstraintOfDistributiveConditionalType

  #53358 opened Mar 19, 2023

• Update azure-devops-node-api

  #53370 opened Mar 20, 2023

• Simplify LKG

  #53371 opened Mar 20, 2023

• Exclude special index signature rule from strict subtype relation

  #53388 opened Mar 20, 2023

• 🤖 Pick PR #53385 (Add missing ambient check to `verba...) into release-5.0

  #53389 opened Mar 20, 2023

• 🤖 Pick PR #53365 (Change ParamaterDecorator to allow ...) into release-5.0

  #53392 opened Mar 20, 2023

• export TypingsInstaller from tsserverlibrary

  #53394 opened Mar 20, 2023

• Fix recursive type inference

  #53396 opened Mar 20, 2023

• Mark more options as affecting errors/resolution

  #53403 opened Mar 21, 2023

• Remove redundant throws of Debug.assertNever

  #53405 opened Mar 21, 2023

• Ignore template literal types which contain intersections in removeStringLiteralsMatchedByTemplateLiterals

  #53406 opened Mar 21, 2023

96 Issues closed by 33 people

• never conditional type leak

  #53364 closed Mar 21, 2023

• [Bug] Required in `[K in keyof Required<T>]` differ when using arrow function and normal function

  #53109 closed Mar 21, 2023

• Parameters created from tuple are treated as mutable instead of immutable, unless written as "...args"

  #53255 closed Mar 20, 2023

• Support a way to export `type X` and `* as X` as namespace with values and types

  #51975 closed Mar 20, 2023

• Type inference fails with nested arrow function callback with block

  #50687 closed Mar 20, 2023

• Unions with overlapping discriminator property do not perform internal excess property checks

  #51873 closed Mar 20, 2023

• #52836 breaks fragmented-store on DT

  #53382 closed Mar 20, 2023

• Make the default values of type parameters variable in order

  #53285 closed Mar 20, 2023

• `noUncheckedIndexedAccess` does not include `undefined` in the type for assignment operators like `??=` or `+=`

  #53303 closed Mar 20, 2023

• adding typescript 5 option "verbatimModuleSyntax": true in tsconfig causes crash

  #53302 closed Mar 20, 2023

• Should the 'verbatimModuleSyntax' check the d.ts file?

  #53227 closed Mar 20, 2023

• Improve inference of Recursive types

  #52722 closed Mar 20, 2023

• Nested array incorrectly infer children type to unknown when given a single element

  #48524 closed Mar 20, 2023

• Object literals allow duplicate `[Enum.member]: ...` keys

  #49666 closed Mar 20, 2023

• Duplicate object keys not caught when using variables

  #43186 closed Mar 20, 2023

• Computed properties no throws if there is a duplicate

  #25758 closed Mar 20, 2023

• Error when variadic elements generated by generic type and other value make an array

  #52354 closed Mar 20, 2023

• [4.9.5] Destructuring type inference fails on direct assignment, succeeds with intermediate variable

  #52629 closed Mar 20, 2023

• Legacy/Experimental parameter decorators fails with TS1239 when StrictNullChecks is true in Typescript 5.0.2

  #53312 closed Mar 20, 2023

• Release Link goes to wrong place

  #53375 closed Mar 20, 2023

• Array type gets inferred incorrectly

  #53380 closed Mar 20, 2023

• enum value's type inferring won't work within objects

  #53288 closed Mar 19, 2023

• Altering input causes TS5055

  #53315 closed Mar 19, 2023

• Object methods type holes

  #53353 closed Mar 19, 2023

• Function inference fails when a final argument is supplied after rest via destructured tuples

  #43122 closed Mar 19, 2023

• Contextual parameters not inferred from variadic tuples with trailing elements

  #52846 closed Mar 19, 2023

• Poor conditional type performance with large string literal union types

  #47481 closed Mar 18, 2023

• Experiment short-circuiting of union distribution

  #47511 closed Mar 18, 2023

• `@linkcode`/`@link` points to symbol import location not definition site in VSCode

  #53272 closed Mar 18, 2023

• [Feature request] Allow typing of relative modules

  #53344 closed Mar 18, 2023

• Array Includes incorrectly uses generic type

  #53275 closed Mar 18, 2023

• Generic function taking array of promises not inferring resolved types into union

  #52806 closed Mar 18, 2023

• Usage of "!" to reverse variable of custom type not working correctly

  #53338 closed Mar 18, 2023

• TS does not recognise the "passwordrules" attribute on input

  #53259 closed Mar 18, 2023

• a way to type libraries that may run in either nodejs or the browser

  #53308 closed Mar 18, 2023

• Key remapping over the "keyof" of a generic type makes it non-assignable to equivalent types

  #53326 closed Mar 17, 2023

• missing reference when assignment on property of contextual this

  #50509 closed Mar 17, 2023

• New Option for `allowImportingTsExtensions`

  #53316 closed Mar 17, 2023

• [5.0.2]: const-like inference is not preserved in conditionally requirable intersected object

  #53320 closed Mar 17, 2023

• Module declaration and namespaces are not working from 3.8.3 to 3.9.2 onwards (same in latest 4.x.x)

  #53230 closed Mar 17, 2023

• An overloaded function cannot call identical overloaded function with its parameters

  #53318 closed Mar 17, 2023

• Not possible to narrow unsupplied optional generic argument

  #53321 closed Mar 17, 2023

• Allow non returning functions to have contextually required `undefined` return type

  #36288 closed Mar 17, 2023

• Allow tools to add information about objects

  #53205 closed Mar 17, 2023

• Allow to combine object shorthand notation with type assertion

  #53231 closed Mar 17, 2023

• Object derived from spreading a class instance from within the class body has wrong type information

  #53252 closed Mar 17, 2023

• Any file name with `.d.` in it ending with `.ts` is a declaration file in 5.0.2 even without `--allowArbitraryExtensions`

  #53319 closed Mar 17, 2023

• Compiler API - Add Deno System implementation

  #42464 closed Mar 17, 2023

• 4.1 Array.isArray breaking change review

  #41808 closed Mar 17, 2023

• Meta-issue: Different type assertion behaviors

  #26064 closed Mar 17, 2023

• Breaking change - `.typeArguments` removed from some `TypeReference`s

  #33693 closed Mar 17, 2023

• Bad Error Messages, February 2021 Edition

  #42711 closed Mar 17, 2023

• Design Meeting Notes, 2023-03-01

  #53057 closed Mar 17, 2023

• Design Meeting Notes, 2/1/2023

  #52579 closed Mar 17, 2023

• Relating large unions of literal types performs poorly

  #53191 closed Mar 17, 2023

• TS didnot transform `foo.return` from dot notation to bracket notation when targeting "ES5"

  #53309 closed Mar 17, 2023

• Enums as union types aren't compatible with strings (5.0)

  #53304 closed Mar 17, 2023

• Upgrade to Typescript 5 doesn't add definition for findLastIndex on arrays

  #53310 closed Mar 17, 2023

• VSCode TypeScript types-registry Performance Bug

  #53235 closed Mar 17, 2023

• Feedback: 5.0 deprecations

  #51909 closed Mar 16, 2023

• Grant minimal permissions to workflows

  #53296 closed Mar 16, 2023

• Number.isInteger is no longer type guarding

  #53295 closed Mar 16, 2023

• Add generic parameter to Object.keys

  #53294 closed Mar 16, 2023

• Inconsistent behavior when inferring a generic type from a function

  #52580 closed Mar 16, 2023

• When the compile target is set to ES2022, an error will be reported at runtime

  #53218 closed Mar 16, 2023

• Access to already checked field gives an error

  #53233 closed Mar 16, 2023

• Automatically infer context type constaint for class methods

  #53237 closed Mar 16, 2023

• Support "satisfies" operator in type/interface declaration as well

  #53238 closed Mar 16, 2023

• "Expando assingment" for Javascript namespace stopped working.

  #49944 closed Mar 16, 2023

• Add `hasIndices` to RegExp and `indices` to the response from `RegExp.exec()` when applicable

  #53278 closed Mar 16, 2023

• Setting a variable type as a generic allows any property to be modified without type checking

  #53279 closed Mar 16, 2023

• [Huge] Alternative File-Type extension for typescript files (.ts = mpeg-2 video)

  #47611 closed Mar 15, 2023

• Can't use aliases of the global `Symbol` value to refer to its properties in the same manner or create unique symbols

  #36468 closed Mar 15, 2023

• Support overriding the types of a set of JSON files

  #49703 closed Mar 15, 2023

• Bug: `__runInitializers(this)` is emitted before `super()` call

  #53204 closed Mar 15, 2023

• Namespace import in esm for cjs module described by `any` type leads to debug failure

  #51099 closed Mar 15, 2023

• Remapping a tuple constraint fails to provide a contextual type for the tuple elements

  #52650 closed Mar 15, 2023

• Generic inference from property return type fails only if parameters exist and JSX attribute syntax is used

  #52786 closed Mar 15, 2023

• Bad inference when passing a field of a discriminated union as field function instead of arrow function

  #52798 closed Mar 15, 2023

• Handle element access expressions in JS/TS with late-bound names

  #33569 closed Mar 15, 2023

• Property is incompatible with index signature when using computed keys.

  #53270 closed Mar 15, 2023

• Record<string, string> allows object keys of type symbol

  #53265 closed Mar 15, 2023

• undefined | string property of object incorrectly narrowed to string in union type

  #53264 closed Mar 15, 2023

• tsc --w: Range Error: Maximum call stack size exceeded when exporting class with a reference to a self-referential static class method

  #53263 closed Mar 15, 2023

• Mapped type with union in value with data type accessing failing to strongly type

  #53030 closed Mar 14, 2023

• Key that must exist on generic type T cannot be used to index type type T

  #51161 closed Mar 14, 2023

• Broken type inference with a typeguard in a if statement

  #53216 closed Mar 14, 2023

• [ServerErrors][TypeScript] 5.1.0-dev.20230312

  #53226 closed Mar 14, 2023

• [NewErrors] 5.1.0-dev.20230312 vs 4.9.5

  #53221 closed Mar 14, 2023

• [ServerErrors][JavaScript] 5.1.0-dev.20230312

  #53224 closed Mar 14, 2023

• 5.x.x: transpileModule fails with TS5104 error when verbatimModuleSyntax: true

  #53160 closed Mar 14, 2023

• TypeScript compiler compiles JSDOC generic/inferred optional undefined types incorrectly in .d.ts file.

  #53249 closed Mar 14, 2023

• Wrong error message when defined abstract property in non-abstract class

  #53242 closed Mar 14, 2023

• Parameter of a generic interface doesn't work when it's a generic index of an another interface

  #32365 closed Mar 14, 2023

• Redo package size changes checks in CI

  #53153 closed Mar 14, 2023

• Broken Unicode in ThirdPartyNoticeText.txt

  #52778 closed Mar 14, 2023

62 Issues opened by 49 people

• Method expression can be null or undefined

  #53404 opened Mar 21, 2023

• No longer possible to use TS API globally in types (5.0.0)

  #53402 opened Mar 20, 2023

• Comparability/type assertion failure when using enums and underlying literals

  #53400 opened Mar 20, 2023

• Expose `textChanges.ChangeTracker` for public API

  #53399 opened Mar 20, 2023

• Inferred ...args should not be readonly

  #53398 opened Mar 20, 2023

• Array.isArray type guard not working in 5.0

  #53395 opened Mar 20, 2023

• union type is not supported inside function

  #53393 opened Mar 20, 2023

• jsx, checkJs, and possibly more options must be tracked as affectsSemanticDiagnostics

  #53391 opened Mar 20, 2023

• Class generic extends class generic will not be evaluated even though the condition is always false

  #53390 opened Mar 20, 2023

• Generic extends non-generic will not be evaluated if the conditional has the same types for each condition

  #53384 opened Mar 20, 2023

• Control flow analysis does not recognise when an object is always defined if there is a type mismatch

  #53381 opened Mar 20, 2023

• Assertion function & Type guards for Record types broken on 5.0

  #53379 opened Mar 20, 2023

• Error in 'cast' during 'getCodeFixes'

  #53378 opened Mar 20, 2023

• Error in 'cast' during 'getCodeFixes'

  #53377 opened Mar 20, 2023

• Error in 'doChange18' during 'getCodeFixes'

  #53376 opened Mar 20, 2023

• verbatimModuleSyntax = true switches incremental compilation to isolatedModules = true

  #53374 opened Mar 20, 2023

• browserslist In Typescript config

  #53373 opened Mar 20, 2023

• TypeScript cannot auto-complete keyword `extends`

  #53372 opened Mar 20, 2023

• Auto-import suggestions prioritize aliased relative paths over package imports

  #53369 opened Mar 20, 2023

• Unable to simplify nested Omit expressions with generics

  #53368 opened Mar 20, 2023

• [ServerErrors][TypeScript] 5.1.0-dev.20230319

  #53363 opened Mar 19, 2023

• Improve string split return type of first array index

  #53362 opened Mar 19, 2023

• [ServerErrors][JavaScript] 5.1.0-dev.20230319

  #53361 opened Mar 19, 2023

• Allow autocompletions inside unfinished arrow function arguments.

  #53360 opened Mar 19, 2023

• [NewErrors] 5.1.0-dev.20230319 vs 5.0.2

  #53359 opened Mar 19, 2023

• In mapped types with key remapping, any property involving a generic type argument is dropped.

  #53357 opened Mar 19, 2023

• The intersection of a tuple with an unrelated array is handled inconsistently

  #53355 opened Mar 19, 2023

• Document allowArbitraryExtensions & allowImportingTsExtensions in https://www.typescriptlang.org/tsconfig

  #53354 opened Mar 19, 2023

• `unknown && false` is too loosely typed

  #53352 opened Mar 19, 2023

• JSDoc `@overload` directive drops function description comments in type declaration

  #53350 opened Mar 19, 2023

• Default imports don't work with moduleResolution=node16

  #53349 opened Mar 19, 2023

• Typescript 5.0.2 does not infer type correctly with React.isValidElement

  #53348 opened Mar 19, 2023

• Incorrect generated JS code when private (hashtag) property is used with parenthesis in left assignment

  #53347 opened Mar 19, 2023

• index never on tuple returns union

  #53345 opened Mar 18, 2023

• Record keys are inferred to be values when using `extends string` conditional in a generic type

  #53343 opened Mar 18, 2023

• Property 'findIndex' does not exist on type 'number[]'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2015' or later.

  #53342 opened Mar 18, 2023

• Filter out types from esm import suggestions in JavaScript

  #53339 opened Mar 18, 2023

• Incorrect Japanese translations for messages 2556, 2620, 2621, and 2706

  #53337 opened Mar 18, 2023

• Array.copyWithin() signature is incorrect

  #53334 opened Mar 18, 2023

• Typescript does not narrow down type inside Array.prototype.find in strictMode

  #53333 opened Mar 18, 2023

• Decorated classes in TS 5.x can't be used in the same file

  #53332 opened Mar 18, 2023

• Design Meeting Notes, 3/17/2023

  #53322 opened Mar 17, 2023

• TS 5 Regression. tsconfig extends stop resolving references to node_modules

  #53314 opened Mar 17, 2023

• [5.0.2] Incorrect property type deduction with type guard

  #53313 opened Mar 17, 2023

• [5.0.2 regression] unused type guard result erroneously changing inferred type of variable

  #53311 opened Mar 17, 2023

• 5.0: const-like inference is not preserved unless a mapped type is used

  #53307 opened Mar 17, 2023

• Variables that are used-before-assigned are typed without `undefined`

  #53306 opened Mar 17, 2023

• `exactOptionalPropertyTypes` does not include `undefined` in the type for assignment operators like `??=`

  #53305 opened Mar 17, 2023

• TypeError: Cannot read properties of undefined (reading 'get') at getTypeAliasInstantiation

  #53287 opened Mar 16, 2023

• Typescript shortened path with dollar sign does not autocomplete correctly

  #53290 opened Mar 16, 2023

• TypeScript cannot auto-complete keyword `typeof`

  #53289 opened Mar 16, 2023

• Property is used before its initialization error is only shown during compilation when using ES2022 but is with ESNext

  #53286 opened Mar 16, 2023

• Intellisense chooses schema so fast

  #53293 opened Mar 16, 2023

• Symbols produced by an alias of the Symbol constructor cannot be used as object keys in types/interfaces/classes, etc.

  #53282 opened Mar 16, 2023

• Have a problem with constructing a type which contains an undefined as Array member. Only triggered in whole-project compile.

  #53277 opened Mar 15, 2023

• `unique symbol`s from the global `SymbolConstructor` widen way too eagerly

  #53276 opened Mar 15, 2023

• Better UX for TypeScript Goto Symbols in VSCode

  #53269 opened Mar 15, 2023

• allow storing results of narrowing of class properties in booleans for further narrowing

  #53267 opened Mar 15, 2023

• Illegal `.d.ts` class property definition for "constructor" generated from JavaScript

  #53257 opened Mar 14, 2023

• Variadic element at position does not match element in target

  #53256 opened Mar 14, 2023

• TypeError: Cannot read properties of undefined (reading 'exportSymbol') and (reading 'flags')

  #53254 opened Mar 14, 2023

• Instantiation Expressions from generic class static member

  #53247 opened Mar 14, 2023

132 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.

• Filter possible contextual return types from unions for async functions and generators

  #51196 commented on Mar 16, 2023 • 21 new comments

• Infer instance type arguments as constraint

  #49863 commented on Mar 17, 2023 • 19 new comments

• Infer intersected reverse mapped types

  #52062 commented on Mar 20, 2023 • 15 new comments

• Fixed an issue with an incorrect resolved signature being cached/returned sometimes for signatures depending on the contextual type/outer inference

  #52146 commented on Mar 20, 2023 • 11 new comments

• Fixed generic inference when the contextual type is a signature with properties

  #52495 commented on Mar 20, 2023 • 11 new comments

• feat(7411): JSX namespaced attribute syntax not supported

  #47356 commented on Mar 20, 2023 • 10 new comments

• More explicit error message for function signature length mismatches

  #51457 commented on Mar 20, 2023 • 10 new comments

• fix(396): (Dis)allow Octal and Bad Escape Sequences in String and (Tagged) Template Literals

  #51837 commented on Mar 20, 2023 • 10 new comments

• Accurate constraintType for indexedAccessType

  #53059 commented on Mar 21, 2023 • 10 new comments

• Always substitute indexed generic mapped type when getting constraint from indexed access

  #53066 commented on Mar 21, 2023 • 8 new comments

• In JS, there's no way to assert that a property is definitely assigned

  #23217 commented on Mar 17, 2023 • 7 new comments

• feat(33367): support destructuring parameter @param tag in tsdoc

  #50951 commented on Mar 20, 2023 • 7 new comments

• Major CPU Usage with v1.74-on

  #52535 commented on Mar 16, 2023 • 6 new comments

• Double error on invalid delete of readonly property

  #53082 commented on Mar 18, 2023 • 5 new comments

• TSC Regression causing crash (Heap OOM) between version 4.8.4 & 4.9.3 in large project

  #53087 commented on Mar 20, 2023 • 5 new comments

• Prefer using the constraint type when there are no inference candidates

  #52865 commented on Mar 20, 2023 • 5 new comments

• TypeScript 5.0 Iteration Plan

  #51362 commented on Mar 17, 2023 • 4 new comments

• TypeScript support for .mdx file extensions

  #36440 commented on Mar 17, 2023 • 3 new comments

• Type argument not preserved in object if object value is a chained expression

  #53217 commented on Mar 18, 2023 • 3 new comments

• Suggestion: `throws` clause and typed catch clause

  #13219 commented on Mar 19, 2023 • 3 new comments

• What’s confusing about modules?

  #51876 commented on Mar 20, 2023 • 3 new comments

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

  #53234 commented on Mar 20, 2023 • 3 new comments

• feat(lib/esnext): add change array by copy types

  #51367 commented on Mar 15, 2023 • 3 new comments

• Widen widening literal types through compound-like assignments

  #52493 commented on Mar 17, 2023 • 3 new comments

• Infer types from mapped properties other than the mapped type itself

  #52737 commented on Mar 16, 2023 • 3 new comments

• Skip parsing JSDoc in .ts files (continued)

  #52921 commented on Mar 18, 2023 • 3 new comments

• Allowing `infer` after `extends T` in conditional types would simplify complicated type definitions massively

  #47330 commented on Mar 14, 2023 • 2 new comments

• Labeled variadic tuples should not require labeling spreads for tuples that are already labeled

  #52853 commented on Mar 14, 2023 • 2 new comments

• Couple apparent bugs with variance checking

  #53210 commented on Mar 15, 2023 • 2 new comments

• Proposal: strictly-typed enums

  #53013 commented on Mar 15, 2023 • 2 new comments

• JavaScript heap out of memory after upgrading to 4.3

  #44299 commented on Mar 17, 2023 • 2 new comments

• Suggestion: Noninferential type parameter usage

  #14829 commented on Mar 17, 2023 • 2 new comments

• shown false problem with NPM module imports

  #53274 commented on Mar 17, 2023 • 2 new comments

• TSC really slow with project config and eventually fails

  #51816 commented on Mar 20, 2023 • 2 new comments

• never doesn't equal never when never is keys/values from filtering generic object wrapped inside another object by exact value

  #51145 commented on Mar 20, 2023 • 2 new comments

• JSDoc equivalent of import *

  #41825 commented on Mar 20, 2023 • 2 new comments

• Performance regression from #48044

  #52345 commented on Mar 21, 2023 • 2 new comments

• Add check for reference-compared literals to JS files

  #49164 commented on Mar 17, 2023 • 2 new comments

• Don't include completions for current and later parameters

  #52690 commented on Mar 20, 2023 • 2 new comments

• Infer reverse mapped types based on inferences made for its concrete properties

  #53017 commented on Mar 14, 2023 • 2 new comments

• Fixed contextual types within generic tuple mapped types

  #53042 commented on Mar 14, 2023 • 2 new comments

• Creating new file from existing nodes should preserve newlines

  #53203 commented on Mar 17, 2023 • 2 new comments

• Document behavior, gotchas, etc, for public TypeChecker API

  #53239 commented on Mar 14, 2023 • 1 new comment

• Selectively opting in to `exactOptionalPropertyTypes`

  #48086 commented on Mar 14, 2023 • 1 new comment

• Non-Nullable Objects in params don't have properties parsed

  #32783 commented on Mar 14, 2023 • 1 new comment

• Go To Symbol is SUPER Slow

  #53236 commented on Mar 14, 2023 • 1 new comment

• Option for auto-import to prefer direct exports over re-exports

  #43777 commented on Mar 15, 2023 • 1 new comment

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

  #52927 commented on Mar 15, 2023 • 1 new comment

• Provide way to link to other files from JSDoc comments

  #47718 commented on Mar 15, 2023 • 1 new comment

• spread of overloaded function rejected on generic components in JSX as of 4.7.4

  #51577 commented on Mar 16, 2023 • 1 new comment

• The inferred type of "X" cannot be named without a reference to "Y". This is likely not portable. A type annotation is necessary.

  #42873 commented on Mar 16, 2023 • 1 new comment

• Generic curried functions lose type information when partially applied within another generic type

  #46940 commented on Mar 16, 2023 • 1 new comment

• Reusing function type with different parameters amount (overloading)

  #45153 commented on Mar 16, 2023 • 1 new comment

• Type annotations for default export

  #13626 commented on Mar 16, 2023 • 1 new comment

• `lib.d.ts` Updates for TypeScript 5.1

  #52956 commented on Mar 16, 2023 • 1 new comment

• Problematic method overload in derived class (from JS)

  #53051 commented on Mar 16, 2023 • 1 new comment

• Tag types

  #4895 commented on Mar 17, 2023 • 1 new comment

• Suggestion: an option to make --showConfig more verbose

  #33211 commented on Mar 17, 2023 • 1 new comment

• Use absolute file paths in error messages

  #36221 commented on Mar 17, 2023 • 1 new comment

• Readonly everything by default

  #42357 commented on Mar 17, 2023 • 1 new comment

• TypeScript 5.1 Iteration Plan

  #53031 commented on Mar 17, 2023 • 1 new comment

• Allow wrapped values to be used in place of primitives.

  #2361 commented on Mar 17, 2023 • 1 new comment

• Autocomplete on extends keyof generic

  #28662 commented on Mar 17, 2023 • 1 new comment

• Support `satisfies` in type declaration

  #52222 commented on Mar 17, 2023 • 1 new comment

• Watch mode: `git diff` on macOS triggers rebuild

  #52876 commented on Mar 18, 2023 • 1 new comment

• tsserver and intellisense hang indefinitely on "loading intellisense status" and "loading..." when using assertion function and complex conditional type

  #51188 commented on Mar 18, 2023 • 1 new comment

• Generic values

  #17574 commented on Mar 19, 2023 • 1 new comment

• Request: Class Decorator Mutation

  #4881 commented on Mar 19, 2023 • 1 new comment

• Allow setter type to be incompatible with the getter type

  #43662 commented on Mar 19, 2023 • 1 new comment

• Inline local refactoring

  #18459 commented on Mar 19, 2023 • 1 new comment

• 5.0: Narrowing from type-guards ignored when constructing JSX call (2604)

  #53178 commented on Mar 19, 2023 • 1 new comment

• Project references: error when importing `tsx` file in referenced project

  #44540 commented on Mar 19, 2023 • 1 new comment

• Unable to retain JSDocs for higher order function

  #53167 commented on Mar 20, 2023 • 1 new comment

• Optional properties on function interface breaks inference of type parameters

  #52262 commented on Mar 20, 2023 • 1 new comment

• Feature Request: allow exclusion of node_modules when skipLibCheck is false

  #30511 commented on Mar 20, 2023 • 1 new comment

• Misleading error message for missing properties in types composed of the intersection of certain multiple unions

  #53200 commented on Mar 20, 2023 • 1 new comment

• Allow to explicitly pass type parameters via JSDoc

  #27387 commented on Mar 20, 2023 • 1 new comment

• Add method host.createCustomSourceFile for custom file extensions

  #52983 commented on Mar 21, 2023 • 1 new comment

• allow unused private well-known symbol members

  #42104 commented on Mar 16, 2023 • 1 new comment

• feat(3792): Cannot 'export default' abstract, ambient class or interface

  #46120 commented on Mar 20, 2023 • 1 new comment

• add `undefined` to declaration of constructor parameter property with…

  #50494 commented on Mar 15, 2023 • 1 new comment

• Improve binding element type inference using `CheckMode`

  #50586 commented on Mar 16, 2023 • 1 new comment

• Fix an issue with types possibly being related to discriminated type despite of incompatible variance

  #51208 commented on Mar 20, 2023 • 1 new comment

• Infinity & NaN Type-level Support

  #51741 commented on Mar 15, 2023 • 1 new comment

• add pushTypeResolution to getTypeOfAlias

  #52642 commented on Mar 15, 2023 • 1 new comment

• Report elementwise elaborations on spreads too

  #52850 commented on Mar 14, 2023 • 1 new comment

• Get apparent type for calls used directly at argument positions to aid nested inferences

  #52866 commented on Mar 15, 2023 • 1 new comment

• fix: non-relative path completion without baseUrl

  #52908 commented on Mar 21, 2023 • 1 new comment

• fix(53138): go-to-definition not working on expression of SatisfiesExpression

  #53164 commented on Mar 19, 2023 • 1 new comment

• ES2022 Class Decorators not working when Class has self-static member

  #52004 commented on Mar 14, 2023 • 0 new comments

• TS Server confusing files in monorepo with same package id due to multiple package.jsons with same `name`

  #51976 commented on Mar 14, 2023 • 0 new comments

• Provide snippet completions for `@param` in JSDoc

  #52370 commented on Mar 14, 2023 • 0 new comments

• Intl.NumberFormatOptions options are missing

  #52072 commented on Mar 15, 2023 • 0 new comments

• Allow functions to have `new symbol` as the return type

  #37469 commented on Mar 16, 2023 • 0 new comments

• JSDoc support for object literal fields

  #290 commented on Mar 20, 2023 • 0 new comments

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

  #11920 commented on Mar 20, 2023 • 0 new comments

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

  #33471 commented on Mar 20, 2023 • 0 new comments

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

  #39114 commented on Mar 20, 2023 • 0 new comments

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

  #39650 commented on Mar 20, 2023 • 0 new comments

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

  #39681 commented on Mar 20, 2023 • 0 new comments

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

  #39853 commented on Mar 20, 2023 • 0 new comments

• Unexpected behavior (possible bug)

  #39970 commented on Mar 20, 2023 • 0 new comments

• Support “Arbitrary module namespace identifier names”

  #40594 commented on Mar 20, 2023 • 0 new comments

• Using an optional call with `.flat()` produces incorrect types

  #41007 commented on Mar 20, 2023 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on Mar 20, 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 Mar 20, 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 Mar 20, 2023 • 0 new comments

• `\u` in String.raw

  #42887 commented on Mar 20, 2023 • 0 new comments

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

  #46791 commented on Mar 20, 2023 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on Mar 20, 2023 • 0 new comments

• [NewErrors] 4.8.0-dev.20220609 vs 4.7.3

  #49460 commented on Mar 20, 2023 • 0 new comments

• Regression in 4.8 where string union type widens to string

  #50635 commented on Mar 20, 2023 • 0 new comments

• Types declared in types.d.ts not included in output of tsc --emitDeclarationOnly

  #51784 commented on Mar 20, 2023 • 0 new comments

• Opening a file causes subsequent completion failures

  #52792 commented on Mar 20, 2023 • 0 new comments

• Inconsistent errors reported between `tsc` and VSCode

  #52813 commented on Mar 20, 2023 • 0 new comments

• bugfix: homomorphic mapped types when T is non-generic, solves 27995

  #48433 commented on Mar 15, 2023 • 0 new comments

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

  #48838 commented on Mar 15, 2023 • 0 new comments

• Optimize the transformed output of `JSXSpreadAttribute`s containing an `ObjectLiteralExpression`

  #49100 commented on Mar 20, 2023 • 0 new comments

• Make `any[]` the effective rest type when `any` is spread

  #50034 commented on Mar 16, 2023 • 0 new comments

• fix(19577): fix regression with fully inferred types and non-null assertions

  #50092 commented on Mar 16, 2023 • 0 new comments

• Bind object type literals in JSDoc

  #51066 commented on Mar 15, 2023 • 0 new comments

• Support supplying a `watchFactory` option that resolves the plugin and uses it for watching file or directory

  #51074 commented on Mar 20, 2023 • 0 new comments

• Convert debug namespace into a module, direct import

  #51455 commented on Mar 21, 2023 • 0 new comments

• [Experiment] Convert parser namespace into a module

  #51470 commented on Mar 16, 2023 • 0 new comments

• [experiment] direct imports

  #51590 commented on Mar 16, 2023 • 0 new comments

• When caching type references cache the tracked symbols so they can be emitted in the d.ts file

  #51721 commented on Mar 15, 2023 • 0 new comments

• Fix mixin functions with 'this' type having 'any' type in dts file

  #52678 commented on Mar 14, 2023 • 0 new comments

• Export isInternalDeclaration and isDeclarationStatement

  #52941 commented on Mar 15, 2023 • 0 new comments

• Infer from filtering mapped types

  #52972 commented on Mar 19, 2023 • 0 new comments

• Move to new file: handle later exports in old file

  #52979 commented on Mar 17, 2023 • 0 new comments

• Upgrade "boolean-trivia" lint to new "argument-trivia" lint that uses type info, has quick fixes, etc.

  #53002 commented on Mar 21, 2023 • 0 new comments

• fix(lib.d.ts): fixed buffer parameter type of `DataView`

  #53130 commented on Mar 18, 2023 • 0 new comments