custom bind method

write a polyfill for bind method

• takes "this"/"context" as first as argument and other parameter along with
• returns a function , this function can also accepts parameter

Function.prototype.myBind = myBind;

function myBind(context, ...args) {
  if (typeof this !== "function") {
    throw new Error(this + "call is okacdsc not a function");
  }
  let callingFunction = this;

  // return function

  // return  ()=>{
  //          // this value will be from parent scope. because it is arrow function
  //     console.log("my ",this) // this here is function (callingFunction)
  //     this.call(context,[...args])

  // }

  return function (...newArgs) {
    // this value will be from parent scope. because it is arrow function
    console.log("my ", this); // here this will depend on where it is calling
    callingFunction.apply(context, [...args, ...newArgs]);
  };
}
function abc(...args) {
  console.log("this", this);
  console.log("args", args);
}
const a = {
  name: "Shadab",
};
let newabc = abc.myBind(a, 1, 2, 3);
// This will trigger the error

newabc(4, 5, 6);