typescript

Static Type Checking

TypeScript allows you to define types for your variables and function parameters, which helps catch errors at compile time rather than at runtime.

let isDone: boolean = false;

Classes and Interfaces

TypeScript supports modern JavaScript features like classes and interfaces, allowing for more structured and maintainable code.

class Animal {
  name: string;
  constructor(theName: string) { this.name = theName; }
  move(distanceInMeters: number = 0) {
    console.log(`${this.name} moved ${distanceInMeters}m.`);
  }
}

Modules

TypeScript provides support for modules, enabling you to organize your code into separate files and manage dependencies more effectively.

import { ZipCodeValidator } from './ZipCodeValidator';
let myValidator = new ZipCodeValidator();

Generics

Generics enable you to create reusable components that work with a variety of types rather than a single one.

function identity<T>(arg: T): T {
  return arg;
}

Advanced Types

TypeScript offers advanced types like intersection types, union types, and mapped types, which provide powerful ways to work with your data structures.

type Tree<T> = {
  value: T;
  left: Tree<T>;
  right: Tree<T>;
};

Tooling Support

TypeScript integrates with many editors and provides features like autocompletion, type checking, and source navigation, enhancing the development experience.

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