17 Pull requests merged by 9 people

• Use changeCompilerHostLikeToUseCache in synchronizeHostData

  #48980 merged May 19, 2022

• Clean up FAR aggregation

  #48619 merged May 19, 2022

• 🤖 Pick PR #49157 (Fix uncalled function check usage d...) into release-4.7

  #49167 merged May 18, 2022

• Fix uncalled function check usage detection for && expressions

  #49157 merged May 18, 2022

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20220517104508064 to main

  #49148 merged May 17, 2022

• fix(48556) / confused comment in test

  #49094 merged May 16, 2022

• fix(49058): Language service crashes for static member in class with unresolved base members

  #49059 merged May 16, 2022

• 🤖 Pick PR #49104 (No errors on apparent type of bigin...) into release-4.7

  #49135 merged May 16, 2022

• No errors on apparent type of bigint or symbol, even for recent targets

  #49104 merged May 16, 2022

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20220516151600014 to main

  #49130 merged May 16, 2022

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20220515155953997 to main

  #49117 merged May 15, 2022

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20220514120841224 to main

  #49108 merged May 14, 2022

• fix(48948): constructor can't be the name of class accessors and generators

  #48954 merged May 13, 2022

• LEGO: Pull request from lego/hb_5378966c-b857-470a-8675-daebef4a6da1_20220513105801844 to main

  #49098 merged May 13, 2022

• Make watch/FS testing code friendlier for project loading in module transformation

  #49087 merged May 12, 2022

• feat: support error when comparing with object/array literals

  #45978 merged May 12, 2022

• fix: `getDefaultLibFilePath` should normalize `__dirname`

  #49051 merged May 12, 2022

18 Pull requests opened by 14 people

• Limit type argument inference from binding patterns

  #49086 opened May 12, 2022

• Merge 'decorators' into 'modifiers' on various nodes

  #49089 opened May 12, 2022

• Update CONTRIBUTING.md to mention issue claiming and force pushing

  #49090 opened May 12, 2022

• In typeof x === object, type parameters extending unknown narrow like unknown itself

  #49091 opened May 12, 2022

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

  #49100 opened May 13, 2022

• Tuple rest sandwich prop

  #49106 opened May 14, 2022

• Improve computed base constraint for Index type on generic IndexedAccess

  #49107 opened May 14, 2022

• Improve intersection reduction and CFA for truthy, equality, and typeof checks

  #49119 opened May 15, 2022

• fix(49131): IntelliSense/autocomplete does not suggest "type" keyword when declaring a type alias inside a function

  #49134 opened May 16, 2022

• Typo in description for "baseUrl" compiler option

  #49139 opened May 16, 2022

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

  #49146 opened May 17, 2022

• Add es2018.intl ref to es2020.intl

  #49152 opened May 17, 2022

• Fix path completions for typesVersions

  #49154 opened May 17, 2022

• [Experiment] Cache Dts Emit result / transform

  #49156 opened May 18, 2022

• Add check for reference-compared literals to JS files

  #49164 opened May 18, 2022

• fix(49151): formatter wrongly indent '>' after type parameters/arguments

  #49165 opened May 18, 2022

• fix(30003): formatter deletes comment after trailing comma (again)

  #49168 opened May 18, 2022

• fix issue #49000: Distributed keyof over union leads to erroneous indexed access

  #49172 opened May 19, 2022

35 Issues closed by 22 people

• Using `extends` with `infer` doesn't work as expected for function arguments

  #49174 closed May 19, 2022

• Allow type assertions from `T`-constrained type variable to subtypes of `T`

  #20821 closed May 19, 2022

• type of this in Object.defineProperty

  #49162 closed May 19, 2022

• Mis-identification of Incompatible Function Signature Overload for Variadic Overload

  #49170 closed May 18, 2022

• Uncalled function in binary expression not silenced by body usage

  #49155 closed May 18, 2022

• WiP: Early adopt wintercg-w3c-proposals: add a new wintercg.lib and ship it

  #49145 closed May 18, 2022

• Enable extraction of type parameters.

  #49112 closed May 18, 2022

• Infer not empty for `[] | ["first", ...string[]]`

  #49123 closed May 18, 2022

• Default values for generic parameters

  #49158 closed May 18, 2022

• switch doesn't narrow object property for passing as function parameter

  #49153 closed May 18, 2022

• TS/JS language features crashing every 5 minutes

  #44916 closed May 17, 2022

• Add `PromiseResult` type to standard lib

  #28105 closed May 17, 2022

• Language service crashes for static member in class with unresolved base members

  #49058 closed May 16, 2022

• Half a variadic tuple rest sandwich matching algorithm missing

  #49105 closed May 16, 2022

• Optimize and rationalize type-checking for appropriate cases of generic functions with overloads.

  #47580 closed May 16, 2022

• "is X" in SwitchStatement

  #49133 closed May 16, 2022

• error TS2318: Cannot find global type 'BigInt'

  #49101 closed May 16, 2022

• TS2532: Object is possibly undefined

  #49121 closed May 16, 2022

• Typeguard not working if checked against Exclude

  #49118 closed May 15, 2022

• Inconsistent type safety on Unions with nested generic Tuple/Object values.

  #49082 closed May 14, 2022

• Syntax for type cortion of for..in loop variable

  #49085 closed May 14, 2022

• Type guard on `unknown` provides incorrect or "stale" editor hints

  #49093 closed May 14, 2022

• https://github.com/microsoft/TypeScript/pull/45054 toI think the tests are fine (as long as you have long paths enabled in Windows - maybe we want to suggest that too?) because my original names were even longer and everything worked fine until I tried to add the new baselines to git.

  #49092 closed May 13, 2022

• Declaration file not work well when import other type

  #49043 closed May 13, 2022

• `constructor` can't be the name of class accessors and generators.

  #48948 closed May 13, 2022

• Error 2367 could be wrong

  #49066 closed May 13, 2022

• Intl.NumberFormatOptions is missing the RoundingType option

  #49102 closed May 13, 2022

• 'async' modifier cannot be used with 'abstract' modifier

  #49096 closed May 13, 2022

• Clause `extends from empty class` breaks type narrowing

  #49097 closed May 13, 2022

• narrow down a union type via a discriminant field that exists only on one of the used types

  #49095 closed May 13, 2022

• Investigate recent regression on Material UI from contextual discrimination changes

  #48298 closed May 12, 2022

• Union types do not understand function overloads and cause an error

  #49076 closed May 12, 2022

• Support "Go to definition"/Ctrl+click on aliased non-js/non-ts imports

  #48896 closed May 12, 2022

• `getDefaultLibFilePath` returns with mixed OS separators on Windows (both `\\` and `/`)

  #49050 closed May 12, 2022

• TypeScript file Watcher consuming over 5k watchers

  #46351 closed May 12, 2022

41 Issues opened by 35 people

• Multiple tagged union with undefined can't catch error

  #49176 opened May 19, 2022

• Compact type annotation syntax that converts to JSDOC AST

  #49175 opened May 19, 2022

• "... is declared but its value is never read" when referenced in a TSDoc link

  #49173 opened May 19, 2022

• Modules resolving to the wrong dependency when using symlinks and `references`

  #49171 opened May 19, 2022

• noUncheckedIndexedAccess should be enabled by default in strict mode

  #49169 opened May 18, 2022

• Incorrect type narrowing in function when taking an union of string values for a string argument

  #49166 opened May 18, 2022

• .js and .d.ts files are no longer included in out-folder after 4.4.4

  #49163 opened May 18, 2022

• Prevent spreading of promises, as it's likely not intended

  #49161 opened May 18, 2022

• TypeScript module "Node16" does not resolve index.d.ts in root of CJS module

  #49160 opened May 18, 2022

• Type parameters in generics indented incorrectly when formatted

  #49151 opened May 17, 2022

• `ts.convertToBase64` does not handle emojis

  #49150 opened May 17, 2022

• Object.freeze overloads force the type to be recognized as an array (by the order of overloads)

  #49149 opened May 17, 2022

• ImportSpecifier.propertyName should allow string literals

  #49147 opened May 17, 2022

• When checking if two class types are assignable, don't check the assignability of their private member variables

  #49144 opened May 17, 2022

• TSServer for multi file's completionInfo, missing import's file.

  #49143 opened May 17, 2022

• [NewErrors] 4.7.1-rc vs 4.6.4

  #49142 opened May 17, 2022

• Better error message for optional chained properties on never, null, or undefined

  #49141 opened May 17, 2022

• Optional round brackets for loops and conditional expressions

  #49140 opened May 16, 2022

• Variadic tuple assignment fail

  #49138 opened May 16, 2022

• Design Meeting Notes, 5/13/2022

  #49137 opened May 16, 2022

• Perf cliff when computing a base constraint of a circular mapped type

  #49136 opened May 16, 2022

• Produce a more complete union of string literal template interpolations when the same const appears multiple times

  #49132 opened May 16, 2022

• Error in 'TypeObject.getProperty' during 'documentHighlights'

  #49129 opened May 16, 2022

• Error in 'getModuleInstanceStateWorker' during 'encodedSemanticClassifications-full'

  #49128 opened May 16, 2022

• Error in 'unknown' during 'completionEntryDetails'

  #49127 opened May 16, 2022

• Error in 'cast' during 'getCodeFixes'

  #49126 opened May 16, 2022

• Error in 'unknown' during 'getCodeFixes'

  #49125 opened May 16, 2022

• Global Type Declaration for file loader packages

  #49124 opened May 16, 2022

• Infer and preserve the label of an element for `Named Tuples`

  #49122 opened May 16, 2022

• feat(auto): reference own type in type declaration

  #49120 opened May 15, 2022

• IntelliSense/autocomplete does not suggest "type" keyword when declaring a type alias inside a function.

  #49131 opened May 15, 2022

• type: class expression that extends passed argument of generic TypeConstructor is reported incorrectly by typeChecker as intersection of types

  #49116 opened May 15, 2022

• JSDoc tag and import autocompletion for concretions

  #49115 opened May 15, 2022

• why -? operator not effect in this case

  #49114 opened May 15, 2022

• `.length` property of function literals is not `readonly`

  #49113 opened May 14, 2022

• Type erroneously widened for property access after for loop when using comma operator

  #49111 opened May 14, 2022

• In-line chained .then to map an array causes weird behavior with the Map constructor

  #49110 opened May 14, 2022

• `{@link https...}` inside a `@remarks` causes error TS2304: Cannot find name 'https'

  #49109 opened May 14, 2022

• Consistently order and differentiate `navto` results

  #49103 opened May 13, 2022

• Optimize `JSXSpreadAttribute` JS emit when it contains `ObjectLiteralExpression`

  #49099 opened May 13, 2022

• Document TypeScript version lifetime and EOL

  #49088 opened May 12, 2022

440 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.

• Callback return type in javascript code is not checked properly under unpredictable circumstances

  #49062 commented on May 19, 2022 • 10 new comments

• Concerns with TypeScript 4.5's Node 12+ ESM Support

  #46452 commented on May 18, 2022 • 7 new comments

• Fixed an issue with quickInfo crashing on a function property returned from generic function

  #49049 commented on May 19, 2022 • 7 new comments

• Test user test inline. DO NOT MERGE.

  #44585 commented on May 18, 2022 • 6 new comments

• fix(47821): Assertion failure on "convert to default export" in module augmentation

  #47829 commented on May 16, 2022 • 6 new comments

• packageJsonWatch, testing package.json and impliedNodeFormat use in transformer

  #48958 commented on May 13, 2022 • 6 new comments

• Incorrect error when using generic, class and conditional typing (#43237 still exists)

  #49072 commented on May 19, 2022 • 5 new comments

• Strict type-checking on a per-file basis "@ts-strict"

  #28306 commented on May 18, 2022 • 4 new comments

• Condition aliasing doesn't capture optional chain expressions

  #49075 commented on May 18, 2022 • 4 new comments

• useDefineForClassFields defaults to true when target is es2022, breaks decorators.

  #48814 commented on May 18, 2022 • 4 new comments

• Automatically enable `debugMode` when recording with Replay

  #49027 commented on May 18, 2022 • 4 new comments

• `"module": "node16"` should support extension rewriting

  #49083 commented on May 13, 2022 • 3 new comments

• Package dependencies and The inferred type of ... cannot be named without a reference to ...

  #29808 commented on May 14, 2022 • 3 new comments

• Go to definition for TypeScript literal strings

  #49033 commented on May 16, 2022 • 3 new comments

• Incorrect type inference of Promise.all when spreading Promise arrays

  #40330 commented on May 19, 2022 • 3 new comments

• Support overload resolution with type union arguments

  #14107 commented on May 13, 2022 • 2 new comments

• keyword to force calling the super on any method

  #21388 commented on May 13, 2022 • 2 new comments

• Idea: Can we cache the result of `typeToTypeNode`?

  #44043 commented on May 13, 2022 • 2 new comments

• Incremental build: removing/adding new files need to restart tsc

  #49078 commented on May 14, 2022 • 2 new comments

• [Proposal] Non-null assertions at block-scope level

  #49079 commented on May 14, 2022 • 2 new comments

• Implement the updated JS decorators proposal

  #48885 commented on May 14, 2022 • 2 new comments

• Associate HTML Elements and EventMaps in a map

  #40689 commented on May 15, 2022 • 2 new comments

• tsserver should implement the Language Server Protocol

  #39459 commented on May 16, 2022 • 2 new comments

• import ConstJson from './config.json' as const;

  #32063 commented on May 16, 2022 • 2 new comments

• Tsconfig show typescript file not found error after moving it to another directory or delete it.

  #43838 commented on May 17, 2022 • 2 new comments

• TypeScript 4.8 Iteration Plan

  #49074 commented on May 18, 2022 • 2 new comments

• Make it possible to infer superclass type parameters / constructor overload from the `super` call

  #36456 commented on May 18, 2022 • 2 new comments

• Optional Generic Type Inference

  #14400 commented on May 19, 2022 • 2 new comments

• Enable constants as computed values for string enums

  #40793 commented on May 19, 2022 • 2 new comments

• Cloning a tuple turns it into an array

  #16503 commented on May 19, 2022 • 2 new comments

• Don't widen return types of function expressions

  #241 commented on May 19, 2022 • 2 new comments

• Report deprecation for object literal assignments (#39374)

  #46167 commented on May 18, 2022 • 2 new comments

• More specific inference for constrained 'infer' types in template literal types

  #48094 commented on May 19, 2022 • 2 new comments

• error TS2688: Cannot find type definition file for...random paths.

  #27956 commented on May 12, 2022 • 1 new comment

• ?? and ??= behave differently when they shouldn't

  #40359 commented on May 12, 2022 • 1 new comment

• Comments on constructor super call not preserved in ES5 unless it has additional empty line

  #49045 commented on May 12, 2022 • 1 new comment

• "satisfies" operator to ensure an expression matches some type (feedback reset)

  #47920 commented on May 12, 2022 • 1 new comment

• Bloomberg feedback on TypeScript 4.7 Beta

  #49071 commented on May 13, 2022 • 1 new comment

• Google feedback on TS 4.7-beta

  #48848 commented on May 13, 2022 • 1 new comment

• Anonymous type parameters

  #48594 commented on May 14, 2022 • 1 new comment

• [request] allow `export type * from`

  #37238 commented on May 14, 2022 • 1 new comment

• Debug Failure. No error for last overload signature

  #48636 commented on May 15, 2022 • 1 new comment

• --exactOptionalPropertyTypes seems to be ignored for JSDoc types

  #49080 commented on May 15, 2022 • 1 new comment

• Unable to infer the inner type within expansion of a nested union

  #26807 commented on May 15, 2022 • 1 new comment

• Index signature is missing in type (only on interfaces, not on type alias)

  #15300 commented on May 15, 2022 • 1 new comment

• Assignment operators allow assigning invalid values to literal types

  #47027 commented on May 16, 2022 • 1 new comment

• Autocomplete on extends keyof generic

  #28662 commented on May 16, 2022 • 1 new comment

• Intellisense should show internals of an interface declaration on hover

  #38040 commented on May 16, 2022 • 1 new comment

• Error: Debug Failure. Did not expect JsxClosingFragment to have an Identifier in its trivia in 'addSyntheticNodes' during 'getApplicableRefactors'

  #32876 commented on May 16, 2022 • 1 new comment

• Error in 'getValidSourceFile' during 'getApplicableRefactors'

  #39513 commented on May 16, 2022 • 1 new comment

• Error: Debug Failure. Invalid cast. The supplied value [object Object] did not pass the test 'isCallExpression'. in 'Object.cast' during 'getCodeFixes'

  #33721 commented on May 16, 2022 • 1 new comment

• TypeError: Cannot read property 'flags' of undefined in 'Object.getCheckFlags' during 'getApplicableRefactors'

  #32875 commented on May 16, 2022 • 1 new comment

• Provide way to link to other files from JSDoc comments

  #47718 commented on May 16, 2022 • 1 new comment

• Exact Types

  #12936 commented on May 16, 2022 • 1 new comment

• SourceFile.impliedNodeFormat - misleading doc comment

  #48961 commented on May 16, 2022 • 1 new comment

• Index signature is assignable to weak type whose properties don't match the signature type

  #27144 commented on May 16, 2022 • 1 new comment

• TS functionality keeps dying on large project

  #44951 commented on May 17, 2022 • 1 new comment

• Boolean["toString"] inconsistency

  #30225 commented on May 17, 2022 • 1 new comment

• Missing import in generated declaration file

  #49065 commented on May 17, 2022 • 1 new comment

• RFC: allowing standalone `.d.ts` emit through explicit type annotations (--isolatedDeclarations, --noTypeInferenceOnExports?)

  #47947 commented on May 17, 2022 • 1 new comment

• Widening after inferring null or undefined for a type parameter should be an implicit any

  #531 commented on May 18, 2022 • 1 new comment

• Support computed properties in destructuring patterns

  #1838 commented on May 18, 2022 • 1 new comment

• async, await, loop, implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.

  #36687 commented on May 18, 2022 • 1 new comment

• Proposal: Partial Type Argument Inference

  #26242 commented on May 18, 2022 • 1 new comment

• Expose configuration hook for custom module resolution

  #18896 commented on May 18, 2022 • 1 new comment

• Restrict template literal interpolation expressions to strings

  #30239 commented on May 18, 2022 • 1 new comment

• unknown should be narrowable to {}

  #32347 commented on May 18, 2022 • 1 new comment

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

  #37142 commented on May 19, 2022 • 1 new comment

• Auto import from yarn workspaces using package's name in the package.json

  #48723 commented on May 19, 2022 • 1 new comment

• Distributed keyof over union leads to erroneous indexed access

  #49000 commented on May 19, 2022 • 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 May 19, 2022 • 1 new comment

• `Error.prototype.cause` has inaccurate value type

  #48098 commented on May 19, 2022 • 1 new comment

• Strict null checks for Map members

  #9619 commented on May 19, 2022 • 1 new comment

• Preserve JSDocs in *.d.ts files when stripping comments

  #14619 commented on May 19, 2022 • 1 new comment

• Negated types

  #29317 commented on May 15, 2022 • 1 new comment

• Allow accessors to override non-class or abstract properties

  #41994 commented on May 16, 2022 • 1 new comment

• feat(7481): Operator to ensure an expression is contextually typed by, and satisfies, some type

  #46827 commented on May 18, 2022 • 1 new comment

• Handle package.json watch in tsc, tsc --build and tsserver

  #48889 commented on May 13, 2022 • 1 new comment

• Add `fractionalSecond` part type to DateTimeFormat().formatToParts

  #48945 commented on May 12, 2022 • 1 new comment

• fixes #48630 array binding pattern with only OmittedExpressions does not check RHS of for-of loop

  #49008 commented on May 16, 2022 • 1 new comment

• Quick info doesn't work on a property attached to a function returned from a generic function

  #49048 commented on May 12, 2022 • 0 new comments

• more readable Error Message Format Proposal

  #49011 commented on May 12, 2022 • 0 new comments

• Experiment with pre-allocated collections

  #45669 commented on May 12, 2022 • 0 new comments

• normalizeSlashes should probably no-op on *nix

  #44174 commented on May 12, 2022 • 0 new comments

• Improve structure, formatting, (human) parsability and readabiliy of errors

  #29059 commented on May 13, 2022 • 0 new comments

• Arguments to callback prop of generic React component are not inferred

  #44596 commented on May 13, 2022 • 0 new comments

• New error: Type of property 'defaultProps' circularly references itself in mapped type

  #37597 commented on May 13, 2022 • 0 new comments

• Exclude causes infer to break

  #48059 commented on May 13, 2022 • 0 new comments

• Typescript fails to infer return type for function under some circumstances (related to `typeof` operator)

  #48134 commented on May 13, 2022 • 0 new comments

• `@typedef` jsdoc comment affects a functions ability to infer parameter types.

  #48179 commented on May 13, 2022 • 0 new comments

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

  #48212 commented on May 13, 2022 • 0 new comments

• dynamic import JSON closes on the variable

  #48285 commented on May 13, 2022 • 0 new comments

• Getting type information for a node causes other nodes to return any for their type

  #48313 commented on May 13, 2022 • 0 new comments

• IntelliSense slow down with large json file

  #48364 commented on May 13, 2022 • 0 new comments

• Cannot auto indicate return type

  #48320 commented on May 13, 2022 • 0 new comments

• Parameter decorators use incorrect async/await context, generated code has syntax error

  #48509 commented on May 13, 2022 • 0 new comments

• IntelliSense in JavaScript is broken when documenting a context for a function in argument (`this` replaced by `globalThis`)

  #48498 commented on May 13, 2022 • 0 new comments

• Decorators broken with private fields, generated code has syntax error

  #48515 commented on May 13, 2022 • 0 new comments

• 1.65.0 Consuming a lot of CPU...code navigation is slow

  #48517 commented on May 13, 2022 • 0 new comments

• Used import elided from emit where source is JavaScript

  #48588 commented on May 13, 2022 • 0 new comments

• Recursive type definition with Promise crashing the compiler

  #48551 commented on May 13, 2022 • 0 new comments

• Exception has occurred: TypeError: Cannot read properties of undefined (reading 'flags')

  #48706 commented on May 13, 2022 • 0 new comments

• `import=require` emits incorrectly with NodeNext, target<=es2018, when emitting as ESM

  #48876 commented on May 13, 2022 • 0 new comments

• Improving User Suite Reports

  #44209 commented on May 13, 2022 • 0 new comments

• Stacktrace does not work on "spaced" filename

  #46307 commented on May 13, 2022 • 0 new comments

• Type of a function argument not inferred from context when defined using conditional type

  #46310 commented on May 13, 2022 • 0 new comments

• Inferences made when trying to match an overload are carried over to matching consecutive overloads

  #46312 commented on May 13, 2022 • 0 new comments

• Unexpected error message when using tagged union in an nested object.

  #46374 commented on May 13, 2022 • 0 new comments

• In overload resolution, `any` always matches the first of `true` or `false`, never `boolean`

  #46376 commented on May 13, 2022 • 0 new comments

• Iterator return type not constraining typed arrays literals

  #46481 commented on May 13, 2022 • 0 new comments

• Type of variable isn't widened inside a conditional inside a loop

  #46475 commented on May 13, 2022 • 0 new comments

• Intermittent circular type error

  #46509 commented on May 13, 2022 • 0 new comments

• Parameter type isn't inferred in values of mapped type with `as`.

  #46602 commented on May 13, 2022 • 0 new comments

• Inconsistent type resolution when resolving a Promise in a generic context

  #46543 commented on May 13, 2022 • 0 new comments

• Private field check narrows generic class too far

  #46668 commented on May 13, 2022 • 0 new comments

• Type of Array.prototype[Symbol.unscopables] is wrong

  #46616 commented on May 13, 2022 • 0 new comments

• Conditional type simplified too early

  #46761 commented on May 13, 2022 • 0 new comments

• Experiment with storing output timestamps in .tsbuildinfo

  #46677 commented on May 13, 2022 • 0 new comments

• [NewErrors] 4.6.0-dev.20211107 vs 4.4.4

  #46721 commented on May 13, 2022 • 0 new comments

• Invalid transform of `async` arrow expression containing `super`

  #46828 commented on May 13, 2022 • 0 new comments

• Color highlight makes error messages unreadable on black-on-white screens

  #46764 commented on May 13, 2022 • 0 new comments

• 4.5 nightly nodenext does not allow top-level await (anymore?)

  #46869 commented on May 13, 2022 • 0 new comments

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

  #46940 commented on May 13, 2022 • 0 new comments

• Performance regression in react-hook-form from 4.4 to 4.5

  #46948 commented on May 13, 2022 • 0 new comments

• `exactOptionalPropertyTypes`: `Partial` of index signature adds `undefined`

  #46969 commented on May 13, 2022 • 0 new comments

• TypeScript language server static code block error

  #47041 commented on May 13, 2022 • 0 new comments

• Awaited<T> not resolved to T when T is a generic type

  #47144 commented on May 13, 2022 • 0 new comments

• Error in 'rehydrateCachedInfo' during 'completionInfo'

  #47366 commented on May 13, 2022 • 0 new comments

• TypeScript Server Error (4.5.4): Cannot read property 'close' of undefined

  #47423 commented on May 13, 2022 • 0 new comments

• Object literal getters and setters doesn't work after spread syntax (ES2017 and below)

  #45531 commented on May 13, 2022 • 0 new comments

• Mapped types lose type information

  #45560 commented on May 13, 2022 • 0 new comments

• API: Exception in TypeChecker.typeToTypeNode

  #45515 commented on May 13, 2022 • 0 new comments

• No contextual typing on yield expression when generator function is contextually typed as union of normal function and generator function

  #45596 commented on May 13, 2022 • 0 new comments

• A series of nested loops, undefined and `in` checks results in incorrect implicit any

  #45638 commented on May 13, 2022 • 0 new comments

• When using generic pick, object deconstruction does not provide valid keys to select

  #45663 commented on May 13, 2022 • 0 new comments

• VSCode unable to retrieve typing information with composite, emitDeclarationOnly and strict

  #45665 commented on May 13, 2022 • 0 new comments

• Recursive types error: Type instantiation is excessively deep

  #45672 commented on May 13, 2022 • 0 new comments

• "typescript.preferences.importModuleSpecifierEnding": "js" causes duplicate extensions when refactoring

  #45678 commented on May 13, 2022 • 0 new comments

• F2 renaming can cascade into node_modules .d.ts files for objects

  #45668 commented on May 13, 2022 • 0 new comments

• Prettier OOM in user tests

  #45697 commented on May 13, 2022 • 0 new comments

• exactOptionsPropertyTypes - anomolous behavior with Tuples, options, and spreading.

  #45764 commented on May 13, 2022 • 0 new comments

• Incorrect generic inference inside a discriminated union

  #45809 commented on May 13, 2022 • 0 new comments

• Namespaces get stripped in object literals

  #45844 commented on May 13, 2022 • 0 new comments

• Capture more info in TS Server errors to help provide repros

  #45900 commented on May 13, 2022 • 0 new comments

• Inconsistent parameter properties initialization order depending on the target syntax with useDefineForClassFields

  #45995 commented on May 13, 2022 • 0 new comments

• Inferring type parameter in arrow function / function expression fails

  #46001 commented on May 13, 2022 • 0 new comments

• [4.3, 4.4] Inline filtering mapped type conditional with `infer` fails

  #46020 commented on May 13, 2022 • 0 new comments

• When the text contains Chinese, the semantic mark returned by TsServer is deviated

  #46062 commented on May 13, 2022 • 0 new comments

• Inverted `Promise` should warn like it does without inverting

  #46140 commented on May 13, 2022 • 0 new comments

• Do not allow surrounding spaces to be counted as part of ${number} templates in template index strings

  #46109 commented on May 13, 2022 • 0 new comments

• Parametrized generic intersection type not equivalent to its alias

  #46234 commented on May 13, 2022 • 0 new comments

• Typescript type checker gets stuck

  #46227 commented on May 13, 2022 • 0 new comments

• Renaming file triggers error in tsconfig.json

  #46432 commented on May 13, 2022 • 0 new comments

• Incorrect code formatting result in untitled files

  #46263 commented on May 13, 2022 • 0 new comments

• Conditional types behavior is different when referencing same type with different name

  #44945 commented on May 13, 2022 • 0 new comments

• Generic inference from LHS of assignment when destructuring can lead to unexpected `any`s

  #45074 commented on May 13, 2022 • 0 new comments

• `esModuleInterop: true` with class static method

  #45133 commented on May 13, 2022 • 0 new comments

• Build mode explicitly checks file stamps in watch mode rather than using file watcher events

  #45082 commented on May 13, 2022 • 0 new comments

• New Error: error TS2590: Expression produces a union type that is too complex to represent

  #45149 commented on May 13, 2022 • 0 new comments

• Generator Functions are not assignable to type GeneratorFunction

  #45146 commented on May 13, 2022 • 0 new comments

• Big(Int|Uint)64ArrayConstructor: missing from Iterable

  #45198 commented on May 13, 2022 • 0 new comments

• TypedArray constructors: missing from mapping iterable

  #45199 commented on May 13, 2022 • 0 new comments

• Bug: Intellisense shows misleading error when parameter is expected to be a union of an object and a string

  #45217 commented on May 13, 2022 • 0 new comments

• Partially overlapping union discriminators are not assignable from a union of discriminating values

  #45230 commented on May 13, 2022 • 0 new comments

• unused type declaration causes totally unrelated error (Index signatures are incompatible)

  #45258 commented on May 13, 2022 • 0 new comments

• `tsc` with `--target ESNext` fails but the same configuration succeeds on the playground.

  #45297 commented on May 13, 2022 • 0 new comments

• Array spread in compiled JS files is incorrect when targeting ES5

  #45251 commented on May 13, 2022 • 0 new comments

• Provide Grammar Errors for JavaScript Files

  #45349 commented on May 13, 2022 • 0 new comments

• Non-deterministic types inferred

  #45364 commented on May 13, 2022 • 0 new comments

• TypeScript server lags behind on latest version

  #45382 commented on May 13, 2022 • 0 new comments

• Inlay hints look awkward for callback parameters with a single parameter

  #45389 commented on May 13, 2022 • 0 new comments

• Yields are ignored in finally block when async generator delegation is used

  #45400 commented on May 13, 2022 • 0 new comments

• Inferring complex arguments is slow when used inside a generic function

  #45405 commented on May 13, 2022 • 0 new comments

• "Maximum call stack size exceeded" in JavaScript IntelliSense following specific module import

  #45406 commented on May 13, 2022 • 0 new comments

• Inferring less information for generics in 4.2+ compared to previous versions

  #45471 commented on May 13, 2022 • 0 new comments

• Very slow typescript autocomplete/intellisense

  #45433 commented on May 13, 2022 • 0 new comments

• No suggestion diagnostic for unchecked JS files in method from class

  #45479 commented on May 13, 2022 • 0 new comments

• Unable to use TypeScript (Code Helper 100% of processor)

  #45491 commented on May 13, 2022 • 0 new comments

• Maximum call stack size exceeded in `isValidSpreadType()`

  #45493 commented on May 13, 2022 • 0 new comments

• KnownKeys<T> breaking change in 4.3.1-rc

  #44143 commented on May 13, 2022 • 0 new comments

• Function identifiers no longer receive semantic highlighting tokens

  #44099 commented on May 13, 2022 • 0 new comments

• Improve Fuzzer, Drive Fuzzer Bugs to Zero, Expand Fuzzer Functions

  #44210 commented on May 13, 2022 • 0 new comments

• Investigate deoptimization diagnostics tooling

  #44211 commented on May 13, 2022 • 0 new comments

• Maximum call stack size exceeded when emitting declaration file that should reference an unnameable infinite conditional type

  #44225 commented on May 13, 2022 • 0 new comments

• Typescript compiler Lose generic typings for function parameter and return types

  #44244 commented on May 13, 2022 • 0 new comments

• Node now supports Regexp hasIndices -- typescript does not.

  #44227 commented on May 13, 2022 • 0 new comments

• JavaScript heap out of memory after upgrading to 4.3

  #44299 commented on May 13, 2022 • 0 new comments

• Harden response delivery to ensure services is consistent with server

  #44260 commented on May 13, 2022 • 0 new comments

• [4.2.3] Compilation with declaration files fails for mixins, usual compilation passes

  #44304 commented on May 13, 2022 • 0 new comments

• The results of the 'Mapped Types' distribution have changed.

  #44325 commented on May 13, 2022 • 0 new comments

• super reference in private method throws

  #44515 commented on May 13, 2022 • 0 new comments

• Element implicitly has an 'any' type because expression of type 'string' can't be used to index type

  #44351 commented on May 13, 2022 • 0 new comments

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

  #44540 commented on May 13, 2022 • 0 new comments

• Crash when using a combination of a switch statement, optional chaining, an implicit any array, and ts strict settings.

  #44659 commented on May 13, 2022 • 0 new comments

• Declaration emit incorrectly prints uninstantiated generic type

  #44727 commented on May 13, 2022 • 0 new comments

• Narrowing types with private functions with `this` return type fails

  #44785 commented on May 13, 2022 • 0 new comments

• Symbol properties should not be exempt from excess property checks in presence of a string index signature

  #44794 commented on May 13, 2022 • 0 new comments

• No validation in JSX when using template string index signatures

  #44797 commented on May 13, 2022 • 0 new comments

• AsyncGenerator doesn't play nicely with TNext = Promise<...>

  #44808 commented on May 13, 2022 • 0 new comments

• Find All References does not work with module.exports in JavaScript

  #44832 commented on May 13, 2022 • 0 new comments

• Union with constrained type variable doesn't narrow in negative branch of type predicate

  #44814 commented on May 13, 2022 • 0 new comments

• File is not being compiled while other files in the same directory ARE compiled

  #44845 commented on May 13, 2022 • 0 new comments

• Bad esnext emit for static property that references another static property when the class has a decorator

  #44908 commented on May 13, 2022 • 0 new comments

• Promise.catch `null` vs `null as null`

  #44913 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Debug Failure. False expression.

  #43340 commented on May 13, 2022 • 0 new comments

• Nested object rest in destructuring results in code with a syntax error

  #43400 commented on May 13, 2022 • 0 new comments

• Array destructuring is transpiled with `__read` helper even when asking for no transpilation and no inline helper functions.

  #43541 commented on May 13, 2022 • 0 new comments

• allowJs cross-file "go do declaration" / "find references" for `exports.foo =` missing some references

  #43508 commented on May 13, 2022 • 0 new comments

• Generic should expand in union

  #43585 commented on May 13, 2022 • 0 new comments

• Presence of a binding pattern changes inference for callback function parameters

  #43605 commented on May 13, 2022 • 0 new comments

• Playground incorrectly requests displayparts for jsdoc from TS 4.3

  #43672 commented on May 13, 2022 • 0 new comments

• Delegated generator return type is not respected (at random)

  #43721 commented on May 13, 2022 • 0 new comments

• Some regression with union of classes in TS4.2

  #43753 commented on May 13, 2022 • 0 new comments

• redux-orm broken by #43624

  #43867 commented on May 13, 2022 • 0 new comments

• JSDoc @link not resolved across modules

  #43869 commented on May 13, 2022 • 0 new comments

• Breaking change: Depth limit now hit for some types in 4.3

  #43877 commented on May 13, 2022 • 0 new comments

• Gradually "warm up" shape calculation in incremental scenarios

  #43912 commented on May 13, 2022 • 0 new comments

• JSDoc can't reference global-injected types declared in an ES module

  #43894 commented on May 13, 2022 • 0 new comments

• typesVersions should support aliasing specific files (or document this will not be supported)

  #43953 commented on May 13, 2022 • 0 new comments

• Unable to infer method property but able to infer arrow function property

  #43948 commented on May 13, 2022 • 0 new comments

• Consider splitting `dom` lib events out into separate lib for nodejs use

  #43972 commented on May 13, 2022 • 0 new comments

• TypeError: Cannot read property 'get' of undefined at Object.getJSXImplicitImportBase

  #44024 commented on May 13, 2022 • 0 new comments

• Spread object into array breaking change in v4.2.3

  #43968 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Cannot read property 'startRecordingFilesWithChangedResolutions' of undefined

  #44026 commented on May 13, 2022 • 0 new comments

• Turn on more thorough functionality on all perf suites

  #44033 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Debug Failure.

  #44027 commented on May 13, 2022 • 0 new comments

• Idea: Can declaration emit synthesize imports?

  #44044 commented on May 13, 2022 • 0 new comments

• Optional type as required if used in one branch of nested promises

  #42293 commented on May 13, 2022 • 0 new comments

• Conditional type which checks nested intersect types evaluates inconsistently when outer type is also intersected and inner type intersects with any.

  #42369 commented on May 13, 2022 • 0 new comments

• Union of Generator and AsyncGenerator introduces spurious undefined next() value path

  #42439 commented on May 13, 2022 • 0 new comments

• Error when spreading a union of tuples in a call

  #42508 commented on May 13, 2022 • 0 new comments

• Opened file added to inferred project instead of configured project

  #42625 commented on May 13, 2022 • 0 new comments

• Can't use async arrow function in/before super call

  #42667 commented on May 13, 2022 • 0 new comments

• [decorator metadata] implicit runtime reference created

  #42679 commented on May 13, 2022 • 0 new comments

• Type infer issue in interfaces with internal properties

  #42716 commented on May 13, 2022 • 0 new comments

• Project reference build error when one of projects' exported var contains external module's vars.

  #42733 commented on May 13, 2022 • 0 new comments

• TS18030: An optional chain cannot contain private identifiers

  #42734 commented on May 13, 2022 • 0 new comments

• Memory leak in tsserver

  #42767 commented on May 13, 2022 • 0 new comments

• Usage of base class for anonymous class results in erroneous declaration output

  #42738 commented on May 13, 2022 • 0 new comments

• isArray type guards still causing issues in latest nightly build

  #42768 commented on May 13, 2022 • 0 new comments

• async/await, optional-chaining and new scope transpiled to ES5: variable gets overwritten

  #42879 commented on May 13, 2022 • 0 new comments

• 4.3's contextual typing of unioned signature breaks @types/linkify-it

  #42941 commented on May 13, 2022 • 0 new comments

• TS2545 and TS2556 triggered, failure to resolve constructor signature on type alias of intersection

  #42940 commented on May 13, 2022 • 0 new comments

• Stack overflow related to "getting" awaited, recursive union type

  #42948 commented on May 13, 2022 • 0 new comments

• Import paths not updated when using tsconfig project references and incremental builds

  #42973 commented on May 13, 2022 • 0 new comments

• JS and TS language service die on template literal expression

  #42974 commented on May 13, 2022 • 0 new comments

• tslib: "TypeError: Cannot redefine property:" Bug Appears To Have Returned

  #43081 commented on May 13, 2022 • 0 new comments

• Duplicate identifier error when merged interface is declared before class

  #43088 commented on May 13, 2022 • 0 new comments

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

  #43122 commented on May 13, 2022 • 0 new comments

• Typescript fails to resolve module when type definitions are placed outside the root path (with typesVersions)

  #43133 commented on May 13, 2022 • 0 new comments

• Developing a JSX framework and jsxImportSource makes TypeScript slow

  #43212 commented on May 13, 2022 • 0 new comments

• 'void' shouldn't be a silently indexable type

  #41021 commented on May 13, 2022 • 0 new comments

• incorrect result with conditional type and boolean

  #41053 commented on May 13, 2022 • 0 new comments

• Declaration merging can be inconsistent

  #41116 commented on May 13, 2022 • 0 new comments

• [4.1.0-beta] Incorrect method overload selected

  #41099 commented on May 13, 2022 • 0 new comments

• Reevaluate checkExternalEmitHelpers() callers

  #41241 commented on May 13, 2022 • 0 new comments

• Module resolution fails when substituion path exists but original path directory does not

  #41281 commented on May 13, 2022 • 0 new comments

• `typeVersions` substitution occurs multiple times causing resolution to fail

  #41284 commented on May 13, 2022 • 0 new comments

• TypeScript 4.0 causes unsolvable TS2611 error for properties inherited from a mixin

  #41347 commented on May 13, 2022 • 0 new comments

• Member decorator function overwrite has wrong type for "this"

  #41426 commented on May 13, 2022 • 0 new comments

• 4.1.1-rc strange Type is not assignable to type never with yield & generators

  #41428 commented on May 13, 2022 • 0 new comments

• Review the project setup experience

  #41580 commented on May 13, 2022 • 0 new comments

• v4.0.x -> v4.1.1-rc change in overload selection

  #41563 commented on May 13, 2022 • 0 new comments

• Allow generic yield* types

  #41646 commented on May 13, 2022 • 0 new comments

• Incremental compilation does not work with relative paths for outDir and tsBuildInfoFile

  #41690 commented on May 13, 2022 • 0 new comments

• 4.1 Array.isArray breaking change review

  #41808 commented on May 13, 2022 • 0 new comments

• Code invalid when [jsx=react-jsx] and [module=system]

  #41914 commented on May 13, 2022 • 0 new comments

• Promise.all overloads don't account for single element tuples

  #41831 commented on May 13, 2022 • 0 new comments

• Generic type param not narrowed in true branch of conditional type

  #42077 commented on May 13, 2022 • 0 new comments

• Async generator typing

  #42055 commented on May 13, 2022 • 0 new comments

• Syntax error in emitted declaration's generic arguments

  #42079 commented on May 13, 2022 • 0 new comments

• Watch mode: rebuild takes too long after adding a simple `console.log` to file (~2 minutes)

  #42173 commented on May 13, 2022 • 0 new comments

• TypedPropertyDescriptor<T> doesn't allow decorators that support methods and getters

  #42142 commented on May 13, 2022 • 0 new comments

• factory.updateModifiers should be part of NodeFactory public api

  #42254 commented on May 13, 2022 • 0 new comments

• getSyntacticModifierFlags return value affected by getEffectiveModifierFlags

  #42189 commented on May 13, 2022 • 0 new comments

• Compilation error when mixing promise and non promise types in promise.then's onfulfilled return type

  #42271 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Debug Failure. False expression.

  #39430 commented on May 13, 2022 • 0 new comments

• No error using imports/exports with --module=none and --target=es2015+

  #39603 commented on May 13, 2022 • 0 new comments

• A extends B relation break after wrapping by extra interface

  #39549 commented on May 13, 2022 • 0 new comments

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

  #39695 commented on May 13, 2022 • 0 new comments

• Type merging for imported types only works if the type is imported from "node_modules/@types/" dir

  #39691 commented on May 13, 2022 • 0 new comments

• Specialize JSX error messages for missing properties

  #39749 commented on May 13, 2022 • 0 new comments

• tsc reports error that LS does not

  #39811 commented on May 13, 2022 • 0 new comments

• TypeError: Cannot read property 'exportSymbol' of undefined at getTypeOfSymbolAtLocation

  #39835 commented on May 13, 2022 • 0 new comments

• Generators with extended unions, null and undefined produces compiler errors

  #40044 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: path.replace is not a function

  #40008 commented on May 13, 2022 • 0 new comments

• random emit declaration

  #40092 commented on May 13, 2022 • 0 new comments

• Error while trying to run typescript "Add all missing imports" quick fix

  #40065 commented on May 13, 2022 • 0 new comments

• Type parameters in return values are sometimes inferred as never

  #40276 commented on May 13, 2022 • 0 new comments

• __importDefault without tslib in output when noEmitHelpers and importHelpers set to true

  #40328 commented on May 13, 2022 • 0 new comments

• IntelliSense not working when esModuleInterop was `true` and swagger-parser was imported.

  #40355 commented on May 13, 2022 • 0 new comments

• Can Module Resolution Cache Usage Be Improved?

  #40356 commented on May 13, 2022 • 0 new comments

• Incorrect initialization type checking for conditional type

  #40405 commented on May 13, 2022 • 0 new comments

• Behavior change when lowering async function which throws during argument evaluation

  #40410 commented on May 13, 2022 • 0 new comments

• Transforming ImportDeclaration or ExportDeclaration causes type specifiers to be output in js files

  #40603 commented on May 13, 2022 • 0 new comments

• When `jsx` is `react-jsx` or `react-jsxdev`, TypeScrip won't report error if @types/react and @types/react-dom not installed but slient give it any type.

  #40759 commented on May 13, 2022 • 0 new comments

• Compilation ouput has undefined properties (__generator function param _b.trys is undefined)

  #40897 commented on May 13, 2022 • 0 new comments

• Allow configuration of NodeBuilderFlags.AllowNodeModulesRelativePaths for un-distributed mono repos

  #37960 commented on May 13, 2022 • 0 new comments

• Required children are not enforced with TSX

  #38108 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Cannot read property 'flags' of undefined

  #38147 commented on May 13, 2022 • 0 new comments

• Declaration emit reveals paths within dependency that were not referred to in the source file

  #38111 commented on May 13, 2022 • 0 new comments

• Allow trailing lines in multiline comment directives

  #38370 commented on May 13, 2022 • 0 new comments

• Narrowing does not work for constrained template arguments in JS

  #38309 commented on May 13, 2022 • 0 new comments

• Type guard on generic parameter gives error inside array callback

  #38376 commented on May 13, 2022 • 0 new comments

• [3.9.2] Regression - combination of mapped type, intersection and generic produces error under infer

  #38460 commented on May 13, 2022 • 0 new comments

• IteratorResult<T> definition conflicts with the JS spec

  #38479 commented on May 13, 2022 • 0 new comments

• `moduleResolution: node` doesn't align with Node's module resolution when targeting ES2015.

  #38729 commented on May 13, 2022 • 0 new comments

• Filter object properties by type

  #38646 commented on May 13, 2022 • 0 new comments

• Ensure find-all-refs works on unresolved locals

  #38836 commented on May 13, 2022 • 0 new comments

• Suggestions for jsx attributes should include =""

  #38891 commented on May 13, 2022 • 0 new comments

• TS 3.9.3 breaks HOC around generic class-based components that worked with TS 3.8.3

  #38910 commented on May 13, 2022 • 0 new comments

• Pipe function + `React.memo` returns component with `any` props

  #38930 commented on May 13, 2022 • 0 new comments

• Provide a better display experience for unresolved values and types

  #39032 commented on May 13, 2022 • 0 new comments

• Partial Semantic Mode Meta-Issue

  #39035 commented on May 13, 2022 • 0 new comments

• Type inference failing for window.onbeforeunload

  #39057 commented on May 13, 2022 • 0 new comments

• Possible regression: Maximum call stack size exceeded when migrating from 3.7.5 to latest version

  #39059 commented on May 13, 2022 • 0 new comments

• Generic argument inference no longer working for specific case

  #39080 commented on May 13, 2022 • 0 new comments

• sourcemap mapping is generated before node generates newline and indent

  #39170 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Debug Failure. False expression.

  #39237 commented on May 13, 2022 • 0 new comments

• Opportunity: Improve compiler performance by avoiding property accesses

  #39247 commented on May 13, 2022 • 0 new comments

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

  #39374 commented on May 13, 2022 • 0 new comments

• IntelliSense Import Stops Working After One Import

  #39456 commented on May 13, 2022 • 0 new comments

• Turning off automatic type acquisition fixes slow autocomplete, tsserver at 100%

  #36358 commented on May 13, 2022 • 0 new comments

• Type bug: using mapped type (Partial) & this type & lookup type

  #36505 commented on May 13, 2022 • 0 new comments

• All semantic operations break after go to definition

  #35907 commented on May 13, 2022 • 0 new comments

• Allowing relative paths in triple slash "types" directives generates broken definitions

  #36557 commented on May 13, 2022 • 0 new comments

• Performance regression in #32582

  #36562 commented on May 13, 2022 • 0 new comments

• Auto import generates wrong module specifier for `a/index.ts` when `a.ts` exists

  #36730 commented on May 13, 2022 • 0 new comments

• Performance regression in #33473

  #36565 commented on May 13, 2022 • 0 new comments

• Update the performance test suite

  #36642 commented on May 13, 2022 • 0 new comments

• Definition output should not iterate over keys

  #36860 commented on May 13, 2022 • 0 new comments

• Type not narrowed by === when equivalent type guard works

  #36772 commented on May 13, 2022 • 0 new comments

• Automate release branch creation

  #36863 commented on May 13, 2022 • 0 new comments

• `Omit` helper loses type information when used with extended Records.

  #36981 commented on May 13, 2022 • 0 new comments

• Error: Debug Failure. False expression: Expected line to be non-zero in 'failIfInvalidLocation' during 'navtree'

  #36977 commented on May 13, 2022 • 0 new comments

• Inference from rest parameters has strange inconsistent results

  #37193 commented on May 13, 2022 • 0 new comments

• No error with Partial<Record<number, {}>> in object spreading

  #37337 commented on May 13, 2022 • 0 new comments

• Contravariance broke in 3.8 when combining spreading parameter list with conditional type

  #37400 commented on May 13, 2022 • 0 new comments

• Structural Comparison of Circular Tuples

  #37420 commented on May 13, 2022 • 0 new comments

• User test requests fail too silently

  #37560 commented on May 13, 2022 • 0 new comments

• New error: This spread always overwrites this property

  #37559 commented on May 13, 2022 • 0 new comments

• TS Server fatal error: Debug Failure. False expression.

  #37759 commented on May 13, 2022 • 0 new comments

• Inconsistent behaviour with generic type parameter defaults

  #37755 commented on May 13, 2022 • 0 new comments

• typeRoots and types not working

  #37708 commented on May 13, 2022 • 0 new comments

• Constants + Generic causing TS4023 ("but cannot be named")

  #37888 commented on May 13, 2022 • 0 new comments

• Lookup type on `this` unexpectedly takes `true` branch of conditional type

  #37778 commented on May 13, 2022 • 0 new comments

• Folders from typesRoot should be used in looking up for types for imports as well as `@types` folder

  #37958 commented on May 13, 2022 • 0 new comments

• tsc, tsserver: hangs with large union type and object spread in React HOC (strict mode)

  #29949 commented on May 13, 2022 • 0 new comments

• Generic type alias produces erroneously compatible types

  #31006 commented on May 13, 2022 • 0 new comments

• Comparison targets are reversed (regression)

  #31251 commented on May 13, 2022 • 0 new comments

• 'instanceof' changes type outside of 'if' statement

  #31155 commented on May 13, 2022 • 0 new comments

• [3.5.1] Type 'NonNullable<Partial<Config>[T]>' is not assignable to type 'Config[T]'

  #31675 commented on May 13, 2022 • 0 new comments

• Type alias substitution does not work

  #31616 commented on May 13, 2022 • 0 new comments

• The dom.iterable lib contains many interfaces that should also be in webworker

  #32435 commented on May 13, 2022 • 0 new comments

• Give more information in --extendedDiagnostics

  #32767 commented on May 13, 2022 • 0 new comments

• Completion list should include property names of constraining type when writing object type literals in type argument positions

  #33302 commented on May 13, 2022 • 0 new comments

• union types not type guarded

  #32928 commented on May 13, 2022 • 0 new comments

• Inference failing for conditional types in function parameters

  #33369 commented on May 13, 2022 • 0 new comments

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

  #33569 commented on May 13, 2022 • 0 new comments

• Object with keys named after variables using [myVar] syntax breaks symbol lookup in TS 3.7.0-dev.20191002

  #33761 commented on May 13, 2022 • 0 new comments

• Symlinked repo gives TS2717: Subsequent property declarations must have the same type.

  #33945 commented on May 13, 2022 • 0 new comments

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

  #34119 commented on May 13, 2022 • 0 new comments

• Optimize constructing type nodes from types

  #34776 commented on May 13, 2022 • 0 new comments

• Regression on inference of "old style" recursive interfaces in 3.7.x

  #34796 commented on May 13, 2022 • 0 new comments

• Compiled .d.ts output for `Omit` is verbose and semantically inconsistent

  #34793 commented on May 13, 2022 • 0 new comments

• [3.6.3] `tsc --watch` extremely slow (regular `tsc` compiles fine).

  #34916 commented on May 13, 2022 • 0 new comments

• Provide metadata about TypeScript's available refactorings and quick fixes

  #34859 commented on May 13, 2022 • 0 new comments

• Avoid elaborating missing properties on common container types

  #35300 commented on May 13, 2022 • 0 new comments

• “Type instantiation is excessively deep and possibly infinite” but only in a large codebase

  #34933 commented on May 13, 2022 • 0 new comments

• Regression 3.7.2: Global namespace augmentations containing re-exports in nested namespaces not found

  #35385 commented on May 13, 2022 • 0 new comments

• Memory leak when switching git branches on jsconfig.json enabled projects

  #35378 commented on May 13, 2022 • 0 new comments

• Assigning to a string fails if it was previously compared to an enum

  #35824 commented on May 13, 2022 • 0 new comments

• Assignments to global objects in Javascript should be global declarations

  #22446 commented on May 13, 2022 • 0 new comments

• Error output: Don't deep compare to native objects

  #26986 commented on May 13, 2022 • 0 new comments

• Assignability rule for conditional types needs to require check types and distributivity to be identical

  #27118 commented on May 13, 2022 • 0 new comments

• Inconsistent inferred overloads in conditional types for no-arg signatures with strictFunctionTypes

  #28867 commented on May 13, 2022 • 0 new comments

• Improve typings of Array.map when called on tuples

  #29841 commented on May 13, 2022 • 0 new comments

• Auto imports not working with project references

  #39778 commented on May 13, 2022 • 0 new comments

• Refine tracing functionality

  #40461 commented on May 13, 2022 • 0 new comments

• Organize imports returning edit when imports are already sorted

  #39823 commented on May 13, 2022 • 0 new comments

• Services debug failure in presence of unclosed JSX fragment

  #44154 commented on May 13, 2022 • 0 new comments

• Explore enabling type acquisition for web TS Server

  #45314 commented on May 13, 2022 • 0 new comments

• package.json diagnostics in `--module nodenext`

  #46861 commented on May 13, 2022 • 0 new comments

• `tsc` with `--watch` is running `checkSourceFile` and `transformNodes` unnecessarily when using `declaration: true`

  #47034 commented on May 13, 2022 • 0 new comments

• ' Error: Debug Failure' with the @fullcalendar/react plugin

  #47163 commented on May 13, 2022 • 0 new comments

• recursiveTypeRelatedTo_DepthLimit - diagnosing poor performance in TS 4.5+

  #47208 commented on May 13, 2022 • 0 new comments

• Async methods that return `this` are considered circular references

  #47291 commented on May 13, 2022 • 0 new comments

• Persistent incorrect semantic diagnostic after large rebase or checkout: File is not listed within the file list of project

  #47274 commented on May 13, 2022 • 0 new comments

• TSC watch / Out of memory errors with recursive template literal types

  #47419 commented on May 13, 2022 • 0 new comments

• Destructuring of `unknown` catch variable is not an error

  #47383 commented on May 13, 2022 • 0 new comments

• Poor conditional type performance with large string literal union types

  #47481 commented on May 13, 2022 • 0 new comments

• Debug Failure in invalid JSDoc type expression

  #47537 commented on May 13, 2022 • 0 new comments

• Incorrect narrowing of union to `never` after no-op `switch` in `while` loop

  #47539 commented on May 13, 2022 • 0 new comments

• Nested promises are not properly unwrapped in `Promise.then`

  #47593 commented on May 13, 2022 • 0 new comments

• Import wrongly elided with a combination of default export, named export, non-exported type

  #47598 commented on May 13, 2022 • 0 new comments

• Virtual file system support in TSServer

  #47600 commented on May 13, 2022 • 0 new comments

• Avoid project loads in find-all-references with plain text searches

  #47656 commented on May 13, 2022 • 0 new comments

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

  #47679 commented on May 13, 2022 • 0 new comments

• The project references documentation should include working examples

  #47721 commented on May 13, 2022 • 0 new comments

• Evaluate popular packages that have `exports` fields set but may not be Node ESM-ready for TypeScript

  #47792 commented on May 13, 2022 • 0 new comments

• JSDoc @param quick fix to rename reformats entire comment

  #47936 commented on May 13, 2022 • 0 new comments

• [Build Performance] Additional Composite packages add fixed ~250ms watch build overhead

  #48187 commented on May 13, 2022 • 0 new comments

• Conditional type evaluation of type aliases produces different result than their equivalent substitution

  #48070 commented on May 13, 2022 • 0 new comments

• LanguageServiceHost.readFile is no longer optional

  #48276 commented on May 13, 2022 • 0 new comments

• Proposal: Comptime. Optimization hints for Preprocessors

  #49052 commented on May 13, 2022 • 0 new comments

• [Feature Request] Proposal for type annotations as comments

  #48650 commented on May 15, 2022 • 0 new comments

• Formatter doesn't recognize file type change

  #47448 commented on May 17, 2022 • 0 new comments

• Missing subfolder path completions with wildcard `typesVersions`

  #47952 commented on May 17, 2022 • 0 new comments

• Initial build mode build emits twice

  #43995 commented on May 18, 2022 • 0 new comments

• Module conversion work

  #46744 commented on May 18, 2022 • 0 new comments

• Generic type no longer narrowed as expected without `extends object`

  #48468 commented on May 18, 2022 • 0 new comments

• JSDoc support for object literal fields

  #290 commented on May 19, 2022 • 0 new comments

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

  #33471 commented on May 19, 2022 • 0 new comments

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

  #11920 commented on May 19, 2022 • 0 new comments

• Enum members aren't subtype reduced in unions

  #35867 commented on May 19, 2022 • 0 new comments

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

  #39114 commented on May 19, 2022 • 0 new comments

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

  #39681 commented on May 19, 2022 • 0 new comments

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

  #39650 commented on May 19, 2022 • 0 new comments

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

  #39853 commented on May 19, 2022 • 0 new comments

• Unexpected behavior (possible bug)

  #39970 commented on May 19, 2022 • 0 new comments

• Support “Arbitrary module namespace identifier names”

  #40594 commented on May 19, 2022 • 0 new comments

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

  #41007 commented on May 19, 2022 • 0 new comments

• Compile error if I named last array destructuring element.

  #41548 commented on May 19, 2022 • 0 new comments

• instanceof Promise in ternary does not narrow Promiselike in 4.1

  #41606 commented on May 19, 2022 • 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 19, 2022 • 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 19, 2022 • 0 new comments

• `\u` in String.raw

  #42887 commented on May 19, 2022 • 0 new comments

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

  #46791 commented on May 19, 2022 • 0 new comments

• Bizarre circular type false positive

  #48708 commented on May 19, 2022 • 0 new comments

• Intersection causes incorrect type compatability

  #48720 commented on May 19, 2022 • 0 new comments

• When using `require()` in es modules, no TS2441 error occurs and `node_modules/@types` is automatically included in the project.

  #48726 commented on May 19, 2022 • 0 new comments

• Regression causes Function top-type to be callable with no arguments

  #48840 commented on May 19, 2022 • 0 new comments

• Wrong module extending?

  #48903 commented on May 19, 2022 • 0 new comments

• Suggestion: Range as Number type

  #15480 commented on May 19, 2022 • 0 new comments

• Nominal `unique type` brands

  #33038 commented on May 16, 2022 • 0 new comments

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

  #47356 commented on May 17, 2022 • 0 new comments

• isArray() preserve mutability and element type

  #48228 commented on May 17, 2022 • 0 new comments

• tsserver support for a virtual filesystem

  #48497 commented on May 16, 2022 • 0 new comments

• Fix for "Outlier case in Excess Property detection in Union (a case that is -more- strict than it should be)" #44856

  #49004 commented on May 16, 2022 • 0 new comments

• Fixed an issue with generic naked T not being allowed as async generator's return

  #49023 commented on May 18, 2022 • 0 new comments