TypeScript

On the official TypeScript website, the programming language extends JavaScript with a type system, with official documentation and tools helping developers describe their code and identify certain errors during development.

It is useful for investigating a language, technology or implementation question through technical reference material. Its focus includes Typed JavaScript, Developer tooling and Official documentation, connecting a development task with the original explanations, examples and project information relevant to that technology.

The official TypeScript site includes sections for Docs and Community.