Best practices for programming secure code with TypeScript

【TypeScript Security】Security Flaws Prevention

Jul 4, 2022

8 min read

Ivona Simic

In this article:

After its introduction, TypeScript elicited various responses from the JavaScript community. Some have endorsed it, while others have rejected it vehemently. Regardless of the reactions, TypeScript has offered several improvements that make it helpful in developing large applications. It also provides certain security advantages while not being without its flaws.

Learn more about TypeScript, the differences between JavaScript and TypeScript programming, and some good security practices below!

What is TypeScript?

TypeScript (TS) is an open-source, object-oriented programming language developed by Microsoft in 2012. It was developed as a result of JavaScript (JS) becoming too complex when developing large applications. It can be used for both client-side and server-side development.

TypeScript is a strict superset of JavaScript, meaning existing JS applications are also valid TS applications. JS libraries are compatible with TS and can be incorporated. 

Several of its essential features are optional static typing (thanks to type definition), strict type binding, and type inference. First, type checking is performed at compilation, reducing runtime errors. Type binding means that variables are bound to specific data types, and type inference denotes the ability of the compiler to find types alone, without additional input by developers.

Apart from its more advanced type system, TS further introduces object-oriented features to ECMAScript 6 like interfaces, enumerated

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