What's the use case? Typescript class with only static members vs object with properties

Question

What's the benefit of this...

class Utils {
    static doSomething() {
        return 'something'
    }

    static doAnother() {
        return 'another'
    }
}

versus this...

const Utils {
    doSomething: () => 'something',
    doAnother: () => 'another',
}

Assuming Utils is never meant to be instantiated (it's just going to be a collection of methods), is there a reason to use one or the other?

basarat · Accepted Answer · 2019-03-06 02:43:06Z

1

Assuming Utils is never meant to be instantiated (it's just going to be a collection of methods), is there a reason to use one or the other?

Its different ways of creating the same thing. There are others as well. Since its not meant to be instantiated, I would do the simple const Utils version.

Other ways

e.g. namespace

namespace Utils {
    export function doSomething() {
        return 'something'
    }

    export function doAnother() {
        return 'another'
    }
}

answered Mar 6, 2019 at 2:43

basarat

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3 Comments

Noel Llevares Over a year ago

Yeah from a consumer's perspective, they are the same thing. You'll use them the same say. As a library developer, isn't there a more concrete way to know which is better knowing that at runtime those different ways actually do the same thing differently?

basarat Over a year ago

The simple const version will perform best as its simpler on the runtime as well.

basarat Over a year ago

As a library developer, isn't there a more concrete way to know which is better knowing No. It's experience based. Always side with simplicity 🌹

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