const store = {

    products: {
        beer: 2.50,
        mineralWater: 1.20,
        chocolade: 1.60,
        wine: 7.50,
        cookies: 0.90,
    },
     quantity: {
        beer: 0,
        mineralWater: 0,
        chocolade: 0,
        wine: 0,
        cookies: 0,
     },
    productAvailable(){

    },
    selectProduct(){
        this.productAvailable();
    },
    buyProducts(){
        return this.selectProduct() * this.productAvailable()
    },

    // discount(){
    //
    // },
    // chiefs(){
    //
    // },
    // employees (){
    //
    // }
};
store.productAvailable();
store.buyProducts(1,2,4,0,3);
store.selectProduct();