What are enum extensions in JavaScript?

What are enum extensions in JavaScript?

Enum extensions in JavaScript allow you to add additional properties or methods to existing enums, enhancing their functionality.

Can you give me an example of how to implement enum extensions?

Sure! You can create an enum and then add methods to it like this:

const Colors = Object.freeze({
    RED: 'red',
    GREEN: 'green',
    BLUE: 'blue',
});

Colors.getColor = function(value) {
    return this[value.toUpperCase()];
};

console.log(Colors.getColor('red')); // Output: 'red'

Are there any limitations to using enum extensions?

Yes, one limitation is that enums in JavaScript are not as strictly enforced as in other languages, so you need to be careful with type safety.

How do enum extensions compare to regular objects?

Enum extensions provide a way to group related constants with added methods, while regular objects are more flexible but lack the semantic meaning of enums.