10 Reasons to choose TypeScript over JavaScript

December 6, 2023
7 min
Linkedin iconX logoFacebook icon

10 Reasons to Use TypeScript Over JavaScript

Hey there, fellow tech enthusiasts! 🚀

It's your friendly digital nerd and today we're embarking on a thrilling journey through the dynamic realm of web development. In this guide, we'll delve into the fascinating debate of TypeScript vs. JavaScript, uncovering the ten compelling reasons why TypeScript emerges as the victor. So, grab your coding compass and let's navigate this exciting landscape!

Why should we use TypeScript instead of JavaScript(8 Reasons)

Aspect TypeScript JavaScript
Type Safety TypeScript provides static typing, reducing runtime errors JavaScript uses dynamic typing, more error-prone
Object-Oriented TypeScript is an object-oriented language JavaScript has limited support for OOP
Open-Source TypeScript is an open-source programming language JavaScript is a standardized language
Compilation TypeScript code is compiled to JavaScript JavaScript is executed directly in the browser
Developer Productivity TypeScript offers code completion, making development easier JavaScript development can be less efficient
Code Quality TypeScript enforces type checking, leading to more reliable code JavaScript may lead to runtime errors
Ecosystem Compatibility TypeScript extends JavaScript, allowing the use of existing libraries JavaScript has a vast ecosystem
Community and Documentation TypeScript has a growing community and comprehensive documentation JavaScript has a well-established community

Enhanced Type Safety

Type Annotations

Type annotations in TypeScript are like signposts for your code. They explicitly define the data type of a variable, parameter, or property. By using these annotations, you provide clear instructions to the TypeScript compiler about the expected data type. This enhances code reliability by catching type-related errors early in the development process, reducing runtime bugs, and making your code easier to understand. It's like having road signs that ensure you're on the right path to building robust and bug-free applications.

Type Inference

Type inference in TypeScript is like having a coding detective. It's the ability of the TypeScript compiler to automatically deduce the data type of a variable or expression based on its value and usage within your code. This means you don't always need to explicitly specify types; TypeScript can figure them out for you. It streamlines development, reduces the need for verbose type annotations, and helps catch potential type-related errors during compilation, making your code both efficient and safe. It's like having a partner who understands what you mean, even when you don't spell it out.

Compile-time Errors

Compile-time errors in TypeScript are like a friendly gatekeeper for your code. They are issues detected by the TypeScript compiler before your program runs. These errors often relate to type mismatches, syntax errors, or other structural problems in your code. By catching these errors during compilation, TypeScript ensures that your code is correct, reducing the likelihood of runtime errors and making your development process more efficient. It's like having a proofreader who spots mistakes before your work is published, resulting in more reliable and robust software.

Use Typescript for Better Code Maintainability

Better code maintainability

Maintaining code is an art, and TypeScript is your canvas. 🎨 It fosters code that's easy to manage:
Stronger Codebase : TypeScript enforces strict typing, fortifying your code's foundation.
Improved Documentation : Documenting your code becomes a breeze, thanks to type definitions.
Easier Collaboration : Say "hello" to smoother team collaborations and "goodbye" to confusion.
Reduced Debugging Time : TypeScript's early bug detection saves you precious hours.

Improved Tooling Support better than javascript

Improved Tooling Support

TypeScript doesn't just stop at code: it extends its support to tools, making your development journey smoother:
Code Editors Integration : Seamlessly integrated with popular code editors, it enhances your workflow.
Rich Autocompletion : TypeScript's autocompletion feature feels like having a coding buddy who knows what you're thinking.
Real-time Error Checking : Catch errors as you type, without breaking a sweat.
Enhanced Refactoring Tools : Effortlessly restructure your code for better readability.

Enhanced Readability, the advantage of  Typescript

Enhanced Readability

Clean, readable code isn't just a dream; it's a reality with TypeScript:

Explicit Type Declarations : No guessing games—types are explicitly declared.

Self-Documenting Code : Your code becomes a self-explanatory masterpiece.

Code Consistency : TypeScript enforces uniformity, making your codebase harmonious.

Improved Code Navigation : Navigation is a breeze with type hints.

Better Collaboration and Teamwork

Better collaboration and teamwork in web development, facilitated by TypeScript, is akin to a symphony of well-coordinated musicians. TypeScript's strong typing and clear documentation enhance communication among team members. It reduces miscommunication, fosters easier onboarding for new developers, allows for seamless collaboration within large teams, and streamlines the code review process. This harmonious environment leads to faster project development, fewer errors, and a more efficient workflow. TypeScript becomes your conductor, ensuring that everyone plays the right notes in perfect harmony, resulting in a masterpiece of a project.

Strong Ecosystem and Community

TypeScript thrives within a thriving ecosystem and a supportive community:

Wide Adoption in Major Projects : It's the choice of giants, like Angular and Microsoft.

Third-party Libraries and Definitions : A treasure trove of libraries and type definitions at your disposal.

Active Development and Updates : TypeScript evolves to meet your needs.

Active Community Forums and Resources : Get help and insights from a passionate community.

Advanced Features

TypeScript flaunts advanced features that set it apart from its JavaScript counterpart

TypeScript showcases a dazzling array of advanced features, setting it leagues apart from its JavaScript counterpart. With interfaces and generics, you can craft flexible and reusable code components. Its advanced type system empowers you to wield intricate type constructs with finesse. TypeScript's union and intersection types enable you to effortlessly combine and manipulate various data structures, while decorators and metadata reflection add a layer of dynamism to your classes. It's like having a toolkit brimming with specialized instruments that allow you to craft more intricate, dynamic, and efficient code.

Improved Code Quality and Testing

Code quality and testing are pivotal for project success. TypeScript elevates both

Code quality and testing stand as twin pillars of project success, and TypeScript emerges as the craftsman's tool to elevate both. Its robust type system and strong static analysis help identify and eliminate bugs early in the development process, ensuring a higher quality codebase. Moreover, TypeScript seamlessly integrates with testing frameworks, making test-driven development a breeze. With TypeScript as your companion, you not only write better code but also improve the reliability and robustness of your software, setting the stage for a triumphant project.

Easy Migration Paths

Migrating from JavaScript to TypeScript? TypeScript provides a smooth transition

Gradual Adoption : No need to rewrite your entire codebase—integrate TypeScript step by step

Interoperability : TypeScript and JavaScript work hand in hand

TypeScript Compiler Configurations : Fine-tune TypeScript to suit your project's needs.

Refactoring Strategies : Learn to refactor like a pro.

Performance and Scalability

Performance and scalability are critical in modern web applications

In the fast-paced world of modern web applications, performance and scalability are non-negotiable. TypeScript steps up to the plate, arming you for success in this dynamic landscape. It opens doors to improved optimization opportunities, ensuring that your application runs like a well-oiled machine. Static type checking enhances performance, catching errors early and allowing for smoother execution. With TypeScript, you can scale your projects with confidence, knowing that your codebase is built to handle the demands of the digital age, while also providing better error handling in large, complex codebases. It's your secret weapon for success.

Key Takeaways

TypeScript is a Superset of JavaScript : TypeScript code is essentially an enhanced version of JavaScript, offering all the benefits of JavaScript while adding powerful features.

Compile-Time Error Checks : TypeScript detects errors during development, reducing runtime bugs and enhancing code reliability, unlike plain JavaScript.

TypeScript Supports Existing JavaScript Libraries : You can easily use JavaScript libraries and files in a TypeScript project, making migration seamless.

Strongly Typed Development : TypeScript provides better type safety, making it easier to spot and prevent errors in your code.

Advantages of TypeScript : TypeScript is open-source, object-oriented, and well-documented, which adds to its appeal for developers.

Code Maintainability : TypeScript makes it easier to maintain large and complex codebases, compared to vanilla JavaScript.

Better for Both Frontend and Backend : TypeScript is versatile and can be used for both frontend and backend development.

Extends JavaScript Features : TypeScript builds upon JavaScript's features, enhancing its capabilities without completely replacing it.

How CodeWalnut could help you develop web/app using Typescript and JavaScript

CodeWalnut, the leading web/app development agency, recognizes the transformative power of TypeScript in modern software development. With TypeScript, your project gains an edge in terms of robustness and maintainability. We understand that in today's dynamic development landscape, having a strong foundation is crucial. That's why our expert developers choose TypeScript over plain JavaScript for your web and app projects.

By harnessing TypeScript's type safety, CodeWalnut ensures fewer bugs and faster development cycles. This open-source superset of JavaScript empowers our team to build scalable and high-performance solutions while seamlessly integrating with Visual Studio Code. You can trust us to deliver applications that not only meet your requirements but also exceed your expectations. With CodeWalnut and TypeScript, your project is in capable hands, ensuring that your web/app development journey is smooth, efficient, and error-free.


1: What advantages does TypeScript offer over plain JavaScript for my web development project?

TypeScript offers numerous advantages, such as enhanced type safety, better code maintainability, and improved tooling support. It allows developers to write JavaScript code while enjoying benefits like static type checking, compile-time error checks, and a more robust codebase. These features make it a compelling choice, especially for larger projects that require maintainability and collaboration.

2: Can I use existing JavaScript code in a TypeScript project, and how does TypeScript handle it?

Yes, you can use existing JavaScript code seamlessly in a TypeScript project. TypeScript is a superset of JavaScript, meaning it's fully compatible with JavaScript. You can gradually adopt TypeScript by adding type annotations and taking advantage of TypeScript's features without rewriting your entire codebase. TypeScript compiles to plain JavaScript, ensuring compatibility and making the transition smooth.

3: What's the difference between TypeScript and JavaScript in terms of performance and scalability?

TypeScript and JavaScript both compile to JavaScript, so there's minimal difference in terms of runtime performance. However, TypeScript shines when it comes to scalability and code maintainability. Its static type system and early error checking reduce runtime errors, which can be crucial for large and complex projects. This makes TypeScript a better choice for projects where scalability and robustness are key.

4: Can TypeScript be used for both frontend and backend development, similar to JavaScript?

Absolutely! TypeScript is versatile and supports both frontend and backend development, just like JavaScript. You can use it with popular frontend frameworks like Angular and React, as well as on the server-side with Node.js. This flexibility allows developers to use TypeScript for the entire stack, making it an excellent choice for full-stack development.

5: Is TypeScript difficult to learn for developers with a background in JavaScript, and what resources are available for learning TypeScript?

TypeScript is easy to learn for developers with a background in JavaScript. It's designed to be a superset of JavaScript, meaning you can start using TypeScript features gradually. There are abundant resources available, including official documentation, online courses, and community forums. Learning TypeScript is a valuable investment in your development skills, offering enhanced code quality and numerous advantages over plain JavaScript.


Disclaimer: This article outline is created by Humans, content is written by AI and the final article is reviewed & edited by a CodeWalnut engineer.

Related posts

Partner with CodeWalnut to drive your digital growth!
Tell us about yourself and we will show you how technology can help drive business growth.
Thank you for your interest in CodeWalnut.Our digital expert will reach you within 24-48 hours.
Oops! Something went wrong while submitting the form.