What is TypeScript
JavaScript with type checking added. It catches many mistakes before code runs, and it is the default language of professional web teams.
In plain terms
TypeScript turns into JavaScript before it runs, so every TypeScript developer is a JavaScript developer. Teams adopted it because the checker catches errors early and makes a large codebase readable to someone new. Most serious web products built since about 2020 are written in it.
What it tells you about a developer
TypeScript depth signals current professional web practice and a habit of building for correctness. Candidates who choose it for personal projects, where nobody required it, are showing how they work on a team.
Facts
- Type
- Language
- Released
- 2012
- Built by
- Microsoft
- Used in
- Frontend, Backend
Someone who knows TypeScript also knows
Built with
Related
Read the lesson on TypeScript More in What the tech words mean