Object-Composition-Extends.js

const onHit = (state) => ({
    hit :  () => {
        if(state.chances === 0){
            return console.log("Game is over");
        }
        state.chances -= 1;
        state.goalsScored += 1;
    }
});

const onMiss = (state) => ({
    miss : () => {
        if(state.chances === 0){
            return console.log("Game is over");
        }
        state.chances -= 1;
    }
});

const onSave = (state) => ({
    save : () => {
        state.name = "Oblak"
        state.savesMade += 1;
    }
});

const player = (name) => {
    let state = {
        name,
        chances : 10,
        goalsScored : 0
    }
    return Object.assign(state,onHit(state), onMiss(state),)
}

const outFieldPlayer = (name) => {
    let state = {
        name,
        savesMade : 0,
        chances : 10,
        goalsScored : 0
    }
    return Object.assign(state,onHit(state), onMiss(state),onSave(state))
}

var Ronaldo = Object.assign(Object.create(player()), {name : "Cristiano Ronaldo"});
var DeGea = Object.assign(Object.create(outFieldPlayer()), {name : "De Gea"});
DeGea.save();
DeGea.hit();
console.log(DeGea.savesMade); //1
Ronaldo.hit();
console.log(Ronaldo.goalsScored); //1
console.log(Ronaldo.chances); //9