Javascript call, apply & bind implementation

const isOBject = obj => {
  const type = typeof obj;
  return type === "function" || (type === "object" && !!obj);
};

const getRandomKey = () => {
  return (
    [...Array(10)].map(_ => ((Math.random() * 36) | 0).toString(36)).join`` ||
    {}
  );
};

const checkRandomKey = (key, obj) =>
  obj[key] === undefined ? key : checkRandomKey(getRandomKey(), obj);

if (!Function.prototype.fauxCall) {
  Function.prototype.fauxCall = function(_context) {
    const context = isOBject(_context) ? _context : {};
    const fnName = checkRandomKey(getRandomKey(), context);
    const args = Array.from(arguments).slice(1);
    context[fnName] = this;
    const result = context[fnName](...args);
    delete context[fnName];
    return result;
  };
}

if(!Function.prototype.fauxApply){
  Function.prototype.fauxApply = function(_context, _args) {
    const context = isOBject(_context) ? _context : {};
    const fnName = checkRandomKey(getRandomKey(), context);
    const args = _args.length ? _args : []
    context[fnName] = this;
    const result = context[fnName](...args);
    delete context[fnName];
    return result;
  };
}
if(!Function.prototype.fauxBind){
  Function.prototype.fauxBind = function(_contetxt){
    const args = Array.from(arguments).slice(1);
    const self = this;
    return function(){
      return self.fauxApply(_contetxt,args)
    }
  }
}

function Product(name, price) {
  this.name = name;
  this.price = price;
}

function Food(name, price) {
  Product.fauxCall(this, name, price);
  this.category = "food";
}


const feed = [2,4]
const y= 4;

const add = (a, b) => a + b;

console.log(new Food("cheese", 5)); // {name: 'chees', price: 5, category: 'food'}
console.log(add.fauxCall(null, 5, 6, 7)); // 11 :: 7 will ignore by add method

console.log(add.fauxApply(null, feed)); // 6

console.log(add.fauxBind(null, 4,7)()); // 11