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TypeScript Introduction

TypeScript is JavaScript plus a static type system and supporting tooling that helps large codebases stay understandable and safer to change.

Teams usually adopt TypeScript for:

  • safer refactoring
  • clearer contracts between modules
  • better editor tooling
  • more maintainable large front-end and Node.js codebases

TypeScript does not replace JavaScript’s runtime. It adds a type-checking layer, project configuration, and stronger developer feedback before code ships.

  • the core type system
  • advanced type composition
  • project setup and compilation
  • release-oriented feature context