Top 50 TypeScript Interview Questions Explained

Ace your TypeScript coding interviews through these questions and answers

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TypeScript is an open source superset of JavaScript developed by Microsoft to add additional features without breaking existing programs. TypeScript is now widely used by frontend and full-stack developers for large-scale projects due to its unique benefits, like static typing and many shorthand notations.

Today, we’ll help you prepare for your TypeScript coding interview by covering 50 of the top TypeScript interview questions and answers.

Here’s what we’ll cover today:

• General TypeScript questions
• TypeScript syntax & language basics
• TypeScript with JavaScript questions
• Advanced TypeScript questions
• 20 more TypeScript questions to practice
• Tips for preparing for TypeScript interviews

General TypeScript Questions

1. What are the main features of TypeScript?

• Cross-platform: The TypeScript compiler can be installed on any operating system, including Windows, macOS, and Linux.
• ES6 features: TypeScript includes most features of planned ECMAScript 2015 (ES6), such as arrow functions.
• Object-oriented language: TypeScript provides all the standard OOP features, like classes, interfaces, and modules.
• Static type checking: TypeScript uses static typing and helps type checking at compile time. Thus you can find compile-time errors while writing the code without running the script.
• Optional static typing: TypeScript also allows optional static typing in case you are used to the dynamic typing of JavaScript.
• DOM manipulation: You can use TypeScript to manipulate the DOM for adding or removing client-side web page elements.

2. What are the benefits of using TypeScript?

• TypeScript is more expressive, meaning it has less syntactical clutter.
• Debugging is easy due to an advanced…