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microsoft/TypeScript

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

109.7K stars 13.6K forks 109.7K watchers TypeScript Apache License 2.0
javascript language typechecker typescript
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100 Open Issues Need Help Last updated: Jul 10, 2026

Open Issues Need Help

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Incorrect/unhelpful error message for non-module jsx file 2 days ago
Bug Help Wanted Good First Issue
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Missing error if ClassDeclaration is used in Statement position 6 days ago
Bug Help Wanted Effort: Casual Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Allow a module to implement an interface 10 days ago
Suggestion Help Wanted
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
[7.0 regression] hover on calls through object properties loses function JSDoc while signature help works 21 days ago
Help Wanted Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Corsa differences in `export=` module augmentation 22 days ago
Help Wanted
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Add types for window.performance.getEntriesByType 23 days ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
JS | Optional chaining left hand assignment not detected as syntax error. 24 days ago
Bug Help Wanted Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Cannot Load Custom Definition File in Repository 24 days ago
Suggestion Help Wanted Good First Issue Domain: Error Messages
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
TypeScript Language Features: `Analyzing '...' and its dependencies` takes crazy long time! 28 days ago
Help Wanted Domain: Performance Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`verbatimModuleSyntax` leaves empty curly brackets in the JS output about 1 month ago
Help Wanted Domain: ES Modules Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Document that compiler.extends can be an array about 1 month ago
Help Wanted Docs
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Support source phase imports about 1 month ago
Suggestion Help Wanted Committed
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Find all references on `from` of a default import drops results after an unsaved edit in another file about 1 month ago
Bug Help Wanted
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
empty mappings in .d.ts.map for export default of a non-identifier expression about 1 month ago
Bug Help Wanted
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Confusing error message for labels used before definition about 1 month ago
Suggestion Help Wanted Good First Issue Effort: Moderate Domain: Error Messages Experience Enhancement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Spread operator with wrong optional property raises error on incorrect source line about 1 month ago
Bug Help Wanted Domain: Related Error Spans
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Mirror cursor for JSX stops working in some case about 1 month ago
Bug Help Wanted Domain: JSX/TSX
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Comment referencing an undefined `ClassDecoratorFunction` type about 1 month ago
Bug Help Wanted Domain: Decorators
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Unknown interface "ClassMethodDecoratorFunction" in documentation for 5.0.4 lib.decorators.d.ts about 1 month ago
Bug Help Wanted Domain: Decorators
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Docs of `charCodeAt` and `codePointAt` are flipped about 1 month ago
Help Wanted Domain: lib.d.ts Docs
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`Date.getVarDate()` function seems incorrectly defined about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Type-asserting function call on variable initialized using `this` causes false implicit-any in VSCode about 1 month ago
Bug Needs More Info Help Wanted Domain: This-Typing
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Please Allow Mixins to function properly with new-able types about 1 month ago
Bug Needs More Info Help Wanted Domain: JSDoc
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`autocapitalize` type is incorrect according to MDN about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Notes about `String.replace` about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Unexpected "used before its declaration" error when implementing a exported type of a merged namespace about 1 month ago
Bug Needs More Info Help Wanted Domain: Binder
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Update lib.dom.d.ts: `MutationObserverInit.attributeFilter` can accept an iterator about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
MediaStream API should support pan, zoom and tilt about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Typings for navigator.connection gone since TS 4.8 about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Intl.NumberFormat does not model required properties when `style` is set to `currency` about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Change type of `File` constructor parameter `fileBits` to `Iterable<BlobPart>` about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Auto-closing of tags within curly braces `{}` does not work when parent element is same tag in JSX about 1 month ago
Bug Needs More Info Help Wanted Domain: JSX/TSX
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
TS 5.4.5: Return type for performance.getEntriesByType is inaccurate about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Consider making `WritableStreamDefaultWriter.write()` contravariant about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
texSubImage2D missing WebGL2 syntax about 1 month ago
Bug Needs More Info Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Error when accessing CSS property value using kebab case in `CSSStyleDeclaration` object about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
strange interaction with `resolveJsonModule`, `createRequire`, naming it `require`, and requiring JSON about 1 month ago
Bug Needs More Info Help Wanted Domain: Node ESM
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
MIDIMessageEvent data is incorrectly typed about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Inconsistent types between Document scrollingElement and documentElement about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Intl.Collator#compare method type does not match spec about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
HTMLElement inherits onerror and addListener("error" definitions that are unique to Window about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Add type definition for Math.sumPrecise (ES2025 / TC39 proposal) about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Intellisense keeps crashing about 1 month ago
Bug Needs More Info Help Wanted Domain: LS: TSServer
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
The `options` arg of `Temporal.ZonedDateTime.prototype.toLocaleString()` currently accepts "illegal" option `timeZone` about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
No error for undeclared #private property in `.js` files about 1 month ago
Bug Help Wanted Effort: Moderate Domain: JavaScript
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Conflicting declaration merging doesn't fail in .d.ts files about 1 month ago
Bug Help Wanted Domain: Binder
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
window.opener should not be typed as any about 1 month ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Preserve computed property in `--isolatedDeclarations` emit about 1 month ago
Bug Help Wanted Domain: flag: isolatedDeclarations
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Multi-line top-level `await` causes duplicate declaration error about 1 month ago
Bug Help Wanted Domain: Binder
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Certain recursive types cause "Maximum call stack size exceeded" error in TS server about 2 months ago
Bug Help Wanted Domain: Indexed Access Types Needs Human Review
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Ghost error appearing after signature help in inferred signatures with rest parameter about 2 months ago
Bug Help Wanted Domain: check: Error Instability Needs Human Review
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Confusing missing property error in a circular situation about 2 months ago
Help Wanted Domain: Mapped Types Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Type is not referred correctly in the while loop about 2 months ago
Bug Help Wanted Domain: check: Control Flow
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Regression: Generic function returning union of tuples is not assignable to identical type since v4.2 about 2 months ago
Help Wanted Domain: check: Type Inference Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Improve inference in the presence of context-sensitive expressions about 2 months ago
Suggestion Help Wanted Experimentation Needed
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
JsDoc with overloads and different generics results in wrong dts output about 2 months ago
Bug Help Wanted Domain: JSDoc
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Bad parsing behaviour for generic arrow type arguments in class heritage / JSX open element about 2 months ago
Bug Help Wanted Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Combination of intersection type, mapped type and generic type seem to break type checks for nested properties about 2 months ago
Bug Help Wanted Domain: Mapped Types Needs Human Review
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Document the Iterator, Iterable, IterableIterator types about 2 months ago
Bug Help Wanted Domain: lib.d.ts Docs Needs Human Review
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Missing Intl.Locale.prototype.getWeekInfo() about 2 months ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Parsing issue for call expression with type arguments following left-shift 2 months ago
Bug Help Wanted Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Confusing error message (2322), should use (2741) and (2322) error message when this["XXX"] = {...} has a missing (or mispelled) key or an incompatible value. 2 months ago
Bug Help Wanted Domain: Error Messages
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`lib.dom.d.ts`: Keyframe interface should allow CSS Typed Object Model objects like CSSTransformValue, etc 2 months ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Scope of this is lost when passing a member function to setInterval 2 months ago
Suggestion Help Wanted Domain: lib.d.ts Good First Issue
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Flag boolean in comparison operator operands as errors 2 months ago
Suggestion Help Wanted Good First Issue
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Dangerous "name" (and potentially others) global 2 months ago
Suggestion Help Wanted Committed Domain: lib.d.ts Good First Issue
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Sort jsdoc parameter suggestions by argument position 2 months ago
Suggestion Help Wanted Good First Issue Domain: LS: Completion Lists VS Code Tracked
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Enum keys not accepted as computed properties if their name is not a valid identifier 2 months ago
Bug Good First Issue Domain: enum
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
TS2367: This condition will always return 'false' since the types 'Constructor<T>' and 'typeof Child' have no overlap. 2 months ago
Suggestion Help Wanted Good First Issue Domain: Error Messages Experience Enhancement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
TS is overly picky when declaring a class constructor type 2 months ago
Bug Help Wanted Good First Issue Domain: classes
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
'declare method' quick fix for adding a private method 2 months ago
Suggestion Help Wanted Good First Issue
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
DOM: `Element#matches()` incorrectly narrows types 2 months ago
Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Should not allow `import.defer?.('x')` 2 months ago
Bug Help Wanted Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
TS1518 depends on operand order in negated v-mode class unions 2 months ago
Bug Help Wanted Domain: Parser
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`Array.prototype.at` docs use "code unit" instead of "item" 2 months ago
Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Type narrowing not working correctly with Uppercase<string> & Lowercase<string> 2 months ago
Bug Help Wanted Domain: check: Control Flow
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`importHelpers` incorrectly requires `tslib` for native `#private` class members at every dated `target` (ES2022–ES2025), even though no helper is ever emitted 2 months ago
Bug Help Wanted Domain: tslib and Helper Functions
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Give a better error message when an import isn't found but a namespace of the same name exists 2 months ago
Bug Help Wanted Effort: Moderate Domain: Error Messages
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Narrow subtype-reduction-prone unions to their narrowest constituent 2 months ago
Bug Help Wanted Domain: check: Control Flow
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Suggestion: a built-in TypedArray interface 2 months ago
Suggestion Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
'Omit' should alias a distinct mapped type (for display purposes) 2 months ago
Suggestion Help Wanted Effort: Moderate Experience Enhancement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Document --incremental and composite project APIs 2 months ago
Help Wanted Domain: API Docs
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Specialize JSX error messages for missing properties 2 months ago
Help Wanted Effort: Moderate Domain: JSX/TSX Domain: Error Messages Experience Enhancement Rescheduled
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Update `TypedArray` constructors to disallow invalid `(typedArray, byteOffset, byteLength)` 2 months ago
Bug Help Wanted Domain: lib.d.ts
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Inlay hints look awkward for callback parameters with a single parameter 2 months ago
Suggestion Help Wanted Experience Enhancement Rescheduled Domain: LS: Inlay Hints
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Inverted `Promise` should warn like it does without inverting 2 months ago
Suggestion Help Wanted Experience Enhancement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Enum value `1 / 0` incorrectly transformed if there is `Infinity` declared in scope 2 months ago
Bug Help Wanted Domain: enum
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Indexing/element access on `super` avoids instance property checks 2 months ago
Bug Help Wanted Rescheduled Effort: Casual Domain: classes
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Crashes on transform and parse (from assertion/debug failures) 2 months ago
Bug Help Wanted Domain: API: Transforms Crash Effort: Casual
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Unexpected "'Type' is declared but its value is never read." error with jsdoc @import syntax 2 months ago
Bug Help Wanted Domain: JSDoc
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Intellisense: deprioritise native function methods 2 months ago
Suggestion Help Wanted Experience Enhancement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Add types for `String.{matchAll,replaceAll}` with a well known symbol 2 months ago
Help Wanted Domain: lib.d.ts Possible Improvement
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Error: Debug Failure. No error for last overload signature 2 months ago
Bug Help Wanted Domain: check: Variance Relationships
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
`using` transform throws when a for body binding shadows the for head binding 2 months ago
Bug Help Wanted Domain: API: Transforms
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Namespaces: use before declaration is not reported 2 months ago
Bug Help Wanted Domain: check: Control Flow
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Incorrect type declarations for a constant inside a namespace merged with an enum 2 months ago
Bug Help Wanted Domain: Declaration Emit
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
Diagnostic code `69010` may be typo of `6910`? 2 months ago
Bug Help Wanted Domain: Error Messages
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
JSDoc `@import` causes `getCompletionEntryDetails` to crash 2 months ago
Bug Help Wanted Domain: JSDoc
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
"await x as any" - Node PartiallyEmittedExpression did not pass test 'isLeftHandSideExpression' assert triggered 2 months ago
Bug Help Wanted Domain: API: Transforms
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript
[isolatedDeclarations] function expressions as an argument to a function call that is exported are reported as needing an annotation 2 months ago
Help Wanted Possible Improvement Domain: flag: isolatedDeclarations
microsoft/TypeScript
109.7K

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

TypeScript
#javascript#language#typechecker#typescript