export function bindPolyfill() {
    if (!Function.prototype.bind) {
        Function.prototype.bind = function (oThis) {
            if (typeof this !== "function") {
                // closest thing possible to the ECMAScript 5
                // internal IsCallable function
                throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable");
            }

            const aArgs = Array.prototype.slice.call(arguments, 1),
                fToBind = this,
                fNOP = function () { },
                fBound = function () {
                    return fToBind.apply(this instanceof fNOP
                        ? this
                        : oThis,
                        // 获取调用时(fBound)的传参.bind 返回的函数入参往往是这么传递的
                        aArgs.concat(Array.prototype.slice.call(arguments)));
                };

            // 维护原型关系
            if (this.prototype) {
                // Function.prototype doesn't have a prototype property
                fNOP.prototype = this.prototype;
            }
            fBound.prototype = new fNOP();

            return fBound;
        };
    }
}