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TypeScript vs JavaScript

August 10, 2021

TypeScript vs JavaScript: The Facts Unfold

TypeScript and JavaScript are two of the most popular programming languages in the world of software development. TypeScript is a superset of JavaScript, introduced by Microsoft in 2012. Both languages have their pros and cons, making it difficult to choose between them. In this article, we will compare the two in terms of performance, scalability, and ease of use.

Performance

TypeScript is a statically typed language, which means that type checking is performed before runtime. This enables the detection of errors before they occur, leading to fewer bugs and better performance. JavaScript, on the other hand, is a dynamically typed language, which means it checks types during runtime. This increases the likelihood of errors occurring during the program's execution, leading to slower performance.

In terms of speed, JavaScript has an edge over TypeScript. This is because TypeScript code must be transpiled to JavaScript before it can be executed. This compilation step can add overhead to the code and affect the runtime performance.

Scalability

TypeScript features optional static typing, making it easier to handle large codebases. Static types help developers catch errors earlier and provide better IDE support. JavaScript, on the other hand, relies on dynamic typing, which can make it difficult to maintain large projects.

Additionally, TypeScript has better object-oriented programming (OOP) support than JavaScript. TypeScript allows for classes, interfaces, namespaces, and static types, which can make it easier to write complex applications.

Ease of Use

JavaScript is easier to learn than TypeScript since it requires less knowledge of programming principles. It also has a shorter setup time since it does not require any additional tools or setup. TypeScript, on the other hand, requires a compiler and type definitions, which can be an added burden.

However, TypeScript provides better code completion and error handling than JavaScript, making it easier to write and maintain code. This feature-rich development experience can speed up the development process in the long run.

Conclusion

Both TypeScript and JavaScript have their advantages and disadvantages. TypeScript is a clear winner when it comes to maintaining large codebases, thanks to its optional static typing and comprehensive OOP support. However, JavaScript remains the more performant language, and it's easier to set up and get started with.

Ultimately, the choice between the two depends on project requirements, team skillset, and personal preferences. In case you need to write test automation for your web application, then you could use cypress.io which supports TypeScript.

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