What are the benefits of using type guards in TypeScript?

What are the benefits of using type guards in TypeScript?

Type guards help ensure type safety by allowing you to narrow down types at runtime, making your code more robust.

Can you give me an example of how type guards work?

Sure! You can use the typeof operator to check if a variable is a string, for instance:

function isString(value: any): value is string {
    return typeof value === 'string';
}

How do type guards improve code readability?

They make the code clearer by explicitly defining the expected types, which helps other developers understand the logic better.

Are there any performance implications of using type guards?

Generally, type guards have minimal performance impact, but they can add some overhead during type checking at runtime.