TypeScript: Enum Types vs Constants

What are the differences between enum types and constants in TypeScript?

In TypeScript, enums are a special type that allows you to define a set of named constants. They can be numeric or string-based, while constants are simply variables that cannot be reassigned.

Can you give me an example of how to use enums in TypeScript?

Sure! Here's a simple example:

enum Direction {
    Up,
    Down,
    Left,
    Right
}

let move: Direction = Direction.Up;

When should I use enums instead of constants?

Use enums when you have a fixed set of related values that you want to group together. Constants are better for single values that don't need to be grouped.

Are there any performance differences between using enums and constants?

Generally, enums can have a slight overhead due to their additional features, but for most applications, the difference is negligible.