TypeScript vs JavaScript: Key Differences and Why It Matters 

Moon Technolabs

Compare JavaScript and TypeScript: JavaScript is best for quick, small projects with dynamic typing, while TypeScript offers static typing and better tooling for large-scale apps, enhancing code quality and maintainability. 

What is TypeScript?

TypeScript, a statically typed superset of JavaScript by Microsoft, enhances development with static typing, classes, and interfaces, allowing for early error detection in web development.

Advantages of TypeScript

Static Typing: Minimizes runtime errors.  Enhanced IDE: Boosts autocompletion and refactoring.  Maintainability: Simplifies large code management.  Future-proof: Adopts modern and upcoming JavaScript features.

What is JavaScript?

JavaScript is a dynamic language enabling interactive web pages, used with HTML/CSS for client- and server-side programming in all browsers. It's essential for modern web apps, despite being slower than compiled languages.

Advantages of JavaScript

Universal: Works on all browsers.  Rich Ecosystem: Offers many libraries. Async Support: Handles callbacks, promises, async/await.  Flexible: Dynamic typing enables quick, adaptable development.

Key Features of TypeScript Vs JavaScript

TypeScript

Static Typing

Advanced IDE  Support

JavaScript

Modern JavaScript Feature

Interfaces and  Enum

Dynamic Typing

Prototype-based  Object Orientation

First-Class  Function

Asynchronous Programming

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Quick Comparison: TypeScript Vs JavaScript

TypeScript

Dynamic

Run-time

JavaScript

Vast and mature

Easier for beginners

Static

Compile-time

Growing rapidly

Steeper, especially  with static typing

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React, Vue, Angular

Angular, NestJS

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TypeScript Vs JavaScript: When to Choose Which?

Choose JavaScript for rapid prototyping and small projects. Opt for TypeScript for large-scale, complex applications where static typing, advanced tooling, and error reduction are crucial. 

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