how to create a Polyfill of popular bind method in javascript

working link=>
https://stackblitz.com/edit/js-nntys1

//here is a small ployfill of bind method.....................

var myObject=

{

name:"manish",

age:22

}

function showName(engg,sal)

{

console.log("my name is "+this.name+" and my age is"+" "+this.age+" "+"and i work as a engg "+engg+" "+"and my salary is "+sal);

}

const a=showName.bind(myObject,"software",20000);

a();

console.log("mybind starts from here...............>>>>")

Function.prototype.myBind=function()

{

var thisFunction=this;

var obj=arguments[0];

if(typeof obj!="object")

{

throw new Error("bind method required a object");

}

var args=[];

for(var i=1;i<arguments.length;i++)

{

args.push(arguments[i]);

}

return function()

{

thisFunction.apply(obj,args)

}

}

const b=showName.myBind(myObject,"software",20000);

b();