Static class in typescript

Question

Is there any way to create an static class in typescript, node.js

I want to create an static class to keep all constants and string in that.

what could be the best way to do that ?

Answer 1

Sure you can define a class with static properties:

export class Constants {
    static MAX_VALUE = 99999;
    static MIN_VALUE = 0;
}

Then use it when you need:

import { Constants } from '../constants';
console.log(Constants.MAX_VALUE);

Answer 2

You can put your variables and functions you want inside a module which means that it doesn't have to be instantiated.

module constants {
   export var myValue = 'foo';

   export function thisIsAStaticLikeFunction () {
      console.log('function called');
   }
}

.....
console.log(constants.myValue);

There really is no such thing as a true static class, but this comes pretty close to replicating it.

Answer 3

Now you can use Enums like that:

export enum Numbers {
   Four = 4,
   Five = 5,
   Six = 6,
   Seven = 7
}

Then use it:

import { Numbers } from './Numbers';
Numbers.FIVE