# TypeScript
URL: https://wwadd.dev/tools/typescript · Official site: https://www.typescriptlang.org
Kind: Typed superset of JavaScript · License: Open source · Last verified: 2026-09-28

Adds static types and interfaces to JavaScript, then compiles away to plain JS. The payoff is editor autocomplete, safer refactors, and a whole class of runtime bugs caught before you ship.

Reach for it when:
- Any web app bigger than a script
- React and full-stack projects
- Shared types between client and server

Repository: https://github.com/microsoft/TypeScript
Recorded SPDX baseline: Apache-2.0