microsoft/TypeScript

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

Stars: 111k
Forks: 14.3k
Open beginner issues: 18
Indexed issues: 4.9k
Avg merge: 2d 4h
Merged PRs (30d): 132

Dominant language: Go
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

Beginner friendly Everything

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21 beginner-friendly issues open

[Bug] PrivateIdentifier nodes are omitted from 2020 semantic classifications Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

microsoft/TypeScript#64322 · 2 comments · Opened Sep 18, 2026
enhance: Add tests for premature caching of contextual parameter types Open

Possible Improvement

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

microsoft/TypeScript#64278 · 1 comment · 1 reaction · Opened Sep 15, 2026
dom.generated.d.ts is missing from this repo while still referenced in the docs Open

Docs

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

microsoft/TypeScript#64118 · 1 comment · Opened Sep 1, 2026
typescript-language-server does not work with @typescript/typescript6 Open

Difficulty 1/5 Under an hour Newbie friendliness 88/100

microsoft/TypeScript#64094 · Opened Aug 29, 2026
The new `--lsp` flag is not mentioned in `tsc --help`'s output Open

Docs

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

microsoft/TypeScript#63959 · 5 comments · Opened Aug 22, 2026
`Array.prototype.at` docs use "code unit" instead of "item" Open

Domain: lib.d.ts Help Wanted

Difficulty 1/5 Under an hour Newbie friendliness 91/100

microsoft/TypeScript#63722 · 4 comments · 1 reaction · Opened Aug 5, 2026
`ReadonlyMap` lacks documentation for `forEach`, `get`, `has` and `size` Open

Domain: lib.d.ts Possible Improvement

Difficulty 1/5 Under an hour Newbie friendliness 90/100

microsoft/TypeScript#63710 · Opened Aug 2, 2026
Support `Promise.allKeyed`/`Promise.allSettledKeyed` methods in `esnext` (eventually `es2027`) Open

Committed Domain: lib.d.ts Suggestion

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

microsoft/TypeScript#63701 · 10 reactions · Opened Jul 31, 2026
Some colors make error messages hard to read on white backgrounds. Open

Awaiting More Feedback Suggestion

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

microsoft/TypeScript#63648 · 2 comments · Opened Jul 10, 2026
Support HTMLElement.focus() Option FocusVisible Open

Fixed

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/TypeScript#63626 · 1 comment · Opened Jul 6, 2026
Overload missing from createElementNS Open

Domain: lib.d.ts Possible Improvement

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

microsoft/TypeScript#63556 · 1 comment · Opened Jun 15, 2026
[Post-7.0] Improve readability of `Array.from` / `TypedArray.from` `mapFn` parameters Open

Possible Improvement

Difficulty 1/5 Under an hour Newbie friendliness 88/100

microsoft/TypeScript#63832 · 1 comment · Opened Jun 7, 2026
String.split() method's separator argument should allow undefined Open

Awaiting More Feedback Suggestion

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/TypeScript#63456 · 5 comments · Opened May 1, 2026
Add type definition for Math.sumPrecise (ES2025 / TC39 proposal) Open

Bug Domain: lib.d.ts Help Wanted Needs Human Review

Difficulty 2/5 1-3 hours Newbie friendliness 84/100

microsoft/TypeScript#63427 · 8 comments · 3 reactions · Opened Apr 23, 2026
[Localization] Misleading Chinese translation for TS2561 error message Open

Bug Domain: Error Messages i18n

Difficulty 2/5 1-3 hours Newbie friendliness 75/100

microsoft/TypeScript#63274 · 2 comments · Opened Mar 20, 2026
Add JSX.ElementChildrenAttribute change to TypeScript 5.8 release notes Open

Docs

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/TypeScript#63212 · 1 comment · Opened Mar 4, 2026
Document that compiler.extends can be an array Open

Docs Help Wanted

Difficulty 1/5 Under an hour Newbie friendliness 82/100

microsoft/TypeScript#62915 · 3 comments · Opened Dec 20, 2025
Document default for `resolveJsonModule` Open

Docs

Difficulty 1/5 Under an hour Newbie friendliness 62/100

microsoft/TypeScript#56926 · Opened Jan 2, 2024
Document File name has a '.js' extension - stripping it Open

Docs

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/TypeScript#41952 · 1 comment · 1 reaction · Opened Dec 14, 2020
Incorrect docs: type compatibility for functions with overloads Open

Docs

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

microsoft/TypeScript#30075 · Opened Feb 25, 2019
Sort jsdoc parameter suggestions by argument position Open

Domain: LS: Completion Lists Good First Issue Help Wanted Suggestion VS Code Tracked

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

microsoft/TypeScript#20183 · 12 comments · Opened Nov 21, 2017

microsoft/TypeScript

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