What are type hints in TypeScript?

What are type hints in TypeScript?

Type hints in TypeScript are annotations that specify the types of variables, function parameters, and return values.

Can you give me an example of how to use type hints?

Sure! Here's a simple example:

function greet(name: string): string {
    return `Hello, ${name}!`;
}

In this function, name is a parameter with a type hint of string.

What happens if I don't use type hints?

If you don't use type hints, TypeScript will infer types based on the assigned values, which can lead to runtime errors.

Are type hints mandatory in TypeScript?

No, type hints are not mandatory. TypeScript allows you to write code without them, but using them improves type safety.