Typescript Foundations / Introduction to Typescript

What is Typescript?

👉 TypeScript is a programming language developed and maintained by Microsoft that builds on JavaScript by adding static types.

In simple terms:

  • TypeScript is JavaScript with types.

  • It compiles to plain JavaScript, so it can run anywhere JavaScript runs (browsers, Node.js, etc.).

  • It helps catch errors at compile time rather than at runtime by letting you define what kinds of values your variables, functions, and objects can have.

✨ Key Features of TypeScript

✅ Optional static typing — You can define types for variables, function parameters, return values, and objects.

✅ Modern JavaScript support — TypeScript supports the latest JavaScript (ES6+) features and compiles them down for older environments.

✅ Enhanced tooling — Better autocomplete, navigation, and refactoring support in editors like VS Code.

✅ Scalability — Makes it easier to work on large codebases and with teams.

✅ Type inference — TypeScript can often figure out the type for you without you explicitly writing it.