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TypeScript Interview Questions and Answers

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JavaScript vs TypeScript

Ques 36. Explain the concept of abstract classes in TypeScript.

Abstract classes in TypeScript are classes that cannot be instantiated on their own and are meant to be subclassed. They may contain abstract methods that must be implemented by subclasses.

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Ques 37. What is the purpose of the 'namespace' keyword in TypeScript?

The 'namespace' keyword in TypeScript is used to group related code into a named scope, preventing naming conflicts with other parts of the program.

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Ques 38. How do you use the 'readonly' modifier with arrays and objects?

The 'readonly' modifier in TypeScript can be applied to arrays and objects using 'ReadonlyArray' and 'Readonly' types to make them immutable.

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