For a long time, JavaScript has been the major language used to make websites. But as apps got more intricate, developers started to have challenges like runtime errors, code inconsistencies, and problems with scaling massive codebases. Microsoft built TypeScript, a tightly typed superset of JavaScript, to solve these concerns. In the past several years, TypeScript has become a common tool in many modern frontend frameworks, such React and Next.js. This blog will talk about how TypeScript is superior than JavaScript and easier and wiser to use, especially when working with React and Next.js. What does TypeScript mean? TypeScript is a free programming language that adds static type declarations to JavaScript. JavaScript is dynamically typed, which means that the types are only known while the code is running. On the other side, TypeScript enables you set types for variables, functions, props, and more. This makes it easier to read your code and less likely to have bugs. Why TypeScript is Important for Web Development Right Now In the fast-paced world of software development today, it's crucial to use code that is simple to read and understand. That's exactly what TypeScript enables you do. TypeScript finds mistakes while you're still coding, not when you're in the browser. Better code readability: When types are properly defined, it's easier to understand what a variable or function is supposed to perform. Scalability: It's easier to work with big apps when the structure is precisely typed. Better tool support: TypeScript makes it easier for editors like VSCode to give you better autocompletions, inline documentation, and rapid fixes. Why TypeScript Works So Well with React TypeScript works well with React because React is a library of components, and each component is in responsible of its own props, state, and logic. When you don't utilize TypeScript, it's easy to pass the wrong props, use a method wrong, or add flaws that only show up when the program is running. Looking at Props You can use PropTypes in JavaScript, but they don't work with other tools or provide full safety. In TypeScript, you can set up an interface for props that catches problems straight away.

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Mohammad Jasim
Choosing TypeScript Over JavaScript: A Smarter Move
for Modern Web Development
mojasim.com/blogs/choosing-typescript-over-javascript
·June 22, 2025
For a long time, JavaScript has been the major language used to make websites. But as
apps got more intricate, developers started to have challenges like runtime errors, code
inconsistencies, and problems with scaling massive codebases. Microsoft built
TypeScript, a tightly typed superset of JavaScript, to solve these concerns. In the past
several years, TypeScript has become a common tool in many modern frontend
frameworks, such React and Next.js. This blog will talk about how TypeScript is superior
than JavaScript and easier and wiser to use, especially when working with React and
Next.js.
What does TypeScript mean?
TypeScript is a free programming language that adds static type declarations to
JavaScript. JavaScript is dynamically typed, which means that the types are only known
while the code is running. On the other side, TypeScript enables you set types for
variables, functions, props, and more. This makes it easier to read your code and less
likely to have bugs.

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Why TypeScript is Important for Web Development Right Now
In the fast-paced world of software development today, it's crucial to use code that is
simple to read and understand. That's exactly what TypeScript enables you do.
TypeScript finds mistakes while you're still coding, not when you're in the
browser.
Better code readability: When types are properly defined, it's easier to
understand what a variable or function is supposed to perform.
Scalability: It's easier to work with big apps when the structure is precisely typed.
Better tool support: TypeScript makes it easier for editors like VSCode to give
you better autocompletions, inline documentation, and rapid fixes.
Why TypeScript Works So Well with React
TypeScript works well with React because React is a library of components, and each
component is in responsible of its own props, state, and logic. When you don't utilize
TypeScript, it's easy to pass the wrong props, use a method wrong, or add flaws that only
show up when the program is running.
Looking at Props
You can use PropTypes in JavaScript, but they don't work with other tools or provide full
safety. In TypeScript, you can set up an interface for props that catches problems straight
away.
interface ButtonProps {
label: string;
onClick: () => void;
}
// This makes sure that the part gets exactly what it wants.
Managing the state more safely
TypeScript is helpful for React components with complicated state logic since it lets you
say exactly what type of state is allowed. This cuts down on issues and strange behavior
when things are re-rendered or updated.
TypeScript in Next.js: Development that is organized and easy to
understand
Next.js is a full-stack framework for React, and it works best when you use TypeScript
with it. This is how TypeScript can help you with your Next.js projects:

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Strong Typing for API Routes
You may construct backend routes right in your frontend project with Next.js. TypeScript
lets you make sure that the structures of your API requests and answers are tightly typed.
Fetching Data That You Can Count On
TypeScript lets you type the data that is returned when you use getStaticProps,
getServerSideProps, or getInitialProps. This manner, you can see what shape your data
is in and how to use it in your components.
export const getStaticProps: GetStaticProps = async () => {
const data: MyDataType = await fetchData();
return { props: { data } };
};
Why TypeScript is Easier Than You Think
TypeScript could look hard at first. But in reality, it makes your task easier.
Code that documents itself
With types in place, you don't need to guess what each function or variable performs.
This makes it much easier to train new team members or keep up with outdated code.
Better support for IDEs
Using TypeScript makes developing better. TypeScript's typing system lets modern code
editors suggest code, point out flaws, and even give ideas about documentation.
Slowly Taking On
You don't have to write everything again. You can move to TypeScript slowly. You can
change the names of your .js files to .ts or .tsx and start adding types where they are
needed. It can be changed in any way.
Real-World Use Cases
A lot of prominent software organizations, like Microsoft, Airbnb, and Slack, use
TypeScript for their React and Next.js projects. It's easy to see why: it saves time in the
long term. Bugs are identified earlier, developers produce cleaner code, and applications
become easier to maintain.

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Libraries of Components
TypeScript helps you set tight rules for how components can work together when you
make libraries of reusable components. This makes sure that everything in your app is
the same.
Apps for Big Groups
Managing types helps everyone stay on the same page in big projects with lots of
developers. Everyone in the team can see clearly how functions and parts should work.
In conclusion
TypeScript is now the best choice for building websites. It helps developers build code
that is clean, reliable, and easy to maintain, especially when they are using React and
Next.js. It makes the development process better, cuts down on defects, and makes both
small and large projects easier to scale.
Not only does using TypeScript make your project stronger, but it also makes it easier to
maintain in the long run and makes developers happy. If you're starting a new React or
Next.js project today, it's not only smarter to use TypeScript instead of regular JavaScript,
it's also a decision that will last.
Hey, My name is Mohammad Jasim. As a Full Stack and DevOps Engineer with over 4+
years of experience building scalable applications with React and Next.js by doing
automated workflows and smooth deployment on AWS (EC2, S3), and Digital Ocean with
reliable zero downtime deployments.