What are some examples of union types in TypeScript?

Can you explain what union types are in TypeScript?

Union types in TypeScript allow you to define a variable that can hold multiple types. For example, you can have a variable that can be either a string or a number.

Can you give me some examples of how to use union types?

Sure! Here's an example: let value: string | number; This means value can be either a string or a number. You can then assign it like this: value = 'Hello'; or value = 42;.

What happens if I try to assign a boolean to a union type?

If you try to assign a boolean to a variable defined as a union of string and number, TypeScript will throw an error, as boolean is not part of the defined types.

Are there any practical use cases for union types?

Yes, union types are useful in functions where you want to accept multiple types of arguments, making your code more flexible and type-safe.