javascript enum

enum

function enummaker(obj = {}) {
    let newEnum = obj;

    newEnum[Symbol.iterator] = function() {
        let i = 0;
        let keys = Object.keys(this);
        return {
            next: function() {
                let value = keys[i];
                i++;
                return {
                    done: (i > keys.length) ? true : false,
                    value: value
                }
            }
        }
    }

    return Object.freeze(newEnum);
}
var statusEnum = enummaker({ ACTIVE: 'ACTIVE', INACTIVE: 'INACTIVE', PENDING: 'PENDING'});

for (let status of statusEnum) {
    console.log(status)
}