How do I use union types in TypeScript?

How do I use union types in TypeScript?

Union types in TypeScript allow you to define a variable that can hold multiple types. For example, you can declare a variable as string | number.

Can you give me an example of how to implement this?

Sure! Here's a simple example:

function printId(id: string | number) {
    console.log(`Your ID is: ${id}`);
}

This function can accept either a string or a number as an argument.

What happens if I pass a different type?

If you pass a type that is not included in the union, TypeScript will throw a compilation error, helping you catch issues early.

Are there any limitations to using union types?

Yes, one limitation is that you cannot access properties or methods that are not common to all types in the union without type narrowing.