TypeScript Mock Interview | Interview Questions for TypeScript Developers

Ambient declarations in TypeScript allow you to provide type information for external libraries, global variables, or other non-TypeScript code.

To use ambient declarations, you create `.d.ts` files where you define the ambient types. These declaration files should be included in your TypeScript project so that the compiler can recognize and apply the type information.

Overall, ambient declarations in TypeScript enable better type-checking and tooling support in projects that involve external entities.

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Any allows you to perform any operation on a value without any type checking, whereas unknown requires you to perform type checking before performing any operations on the value.

The 'never' keyword to make a variable of never type. Users can use the never type when they are sure about any situation that will never occur. For example, we can use the never as a return type when we are sure that the function will never return any value.

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Ambient declarations are typically used to describe the shape of libraries that are written in JavaScript, so that you can use them in your TypeScript code with type checking and IDE support. They are defined in .d.ts files, which are TypeScript declaration files that contain only type information and no actual implementation code.

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An ambient declaration is a way to tell the TypeScript compiler about the existence of a value that is not written in TypeScript, such as a global variable or a third-party library.

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