"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
var implementation;
var hasRequiredImplementation;
function requireImplementation() {
  if (hasRequiredImplementation)
    return implementation;
  hasRequiredImplementation = 1;
  var ERROR_MESSAGE = "Function.prototype.bind called on incompatible ";
  var toStr = Object.prototype.toString;
  var max = Math.max;
  var funcType = "[object Function]";
  var concatty = function concatty2(a, b) {
    var arr = [];
    for (var i = 0; i < a.length; i += 1) {
      arr[i] = a[i];
    }
    for (var j = 0; j < b.length; j += 1) {
      arr[j + a.length] = b[j];
    }
    return arr;
  };
  var slicy = function slicy2(arrLike, offset) {
    var arr = [];
    for (var i = offset || 0, j = 0; i < arrLike.length; i += 1, j += 1) {
      arr[j] = arrLike[i];
    }
    return arr;
  };
  var joiny = function(arr, joiner) {
    var str = "";
    for (var i = 0; i < arr.length; i += 1) {
      str += arr[i];
      if (i + 1 < arr.length) {
        str += joiner;
      }
    }
    return str;
  };
  implementation = function bind(that) {
    var target = this;
    if (typeof target !== "function" || toStr.apply(target) !== funcType) {
      throw new TypeError(ERROR_MESSAGE + target);
    }
    var args = slicy(arguments, 1);
    var bound;
    var binder = function() {
      if (this instanceof bound) {
        var result = target.apply(
          this,
          concatty(args, arguments)
        );
        if (Object(result) === result) {
          return result;
        }
        return this;
      }
      return target.apply(
        that,
        concatty(args, arguments)
      );
    };
    var boundLength = max(0, target.length - args.length);
    var boundArgs = [];
    for (var i = 0; i < boundLength; i++) {
      boundArgs[i] = "$" + i;
    }
    bound = Function("binder", "return function (" + joiny(boundArgs, ",") + "){ return binder.apply(this,arguments); }")(binder);
    if (target.prototype) {
      var Empty = function Empty2() {
      };
      Empty.prototype = target.prototype;
      bound.prototype = new Empty();
      Empty.prototype = null;
    }
    return bound;
  };
  return implementation;
}
exports.__require = requireImplementation;
//# sourceMappingURL=implementation.cjs.map
