e.exports = function() {
            if ("undefined" == typeof document || !document.addEventListener) return null;
            var r, o, i, a = {};
            return a.copy = function() {
                var e = !1,
                    t = null,
                    n = !1;

                function r() {
                    e = !1, t = null, n && window.getSelection().removeAllRanges(), n = !1
                }
                return document.addEventListener("copy", function(n) {
                        if (e) {
                            for (var r in t) n.clipboardData.setData(r, t[r]);
                            n.preventDefault()
                        }
                    }),
                    function(o) {
                        return new Promise(function(i, a) {
                            e = !0, "string" == typeof o ? t = {
                                    "text/plain": o
                                } : o instanceof Node ? t = {
                                    "text/html": (new XMLSerializer).serializeToString(o)
                                } : o instanceof Object ? t = o : a("Invalid data type. Must be string, DOM node, or an object mapping MIME types to strings."),
                                function e(t) {
                                    try {
                                        if (document.execCommand("copy")) r(), i();
                                        else {
                                            if (t) throw r(), new Error("Unable to copy. Perhaps it's not available in your browser?");
                                            ! function() {
                                                var e = document.getSelection();
                                                if (!document.queryCommandEnabled("copy") && e.isCollapsed) {
                                                    var t = document.createRange();
                                                    t.selectNodeContents(document.body), e.removeAllRanges(), e.addRange(t), n = !0
                                                }
                                            }(), e(!0)
                                        }
                                    } catch (e) {
                                        r(), a(e)
                                    }
                                }(!1)
                        })
                    }
            }(), a.paste = (i = !1, document.addEventListener("paste", function(e) {
                if (i) {
                    i = !1, e.preventDefault();
                    var t = r;
                    r = null, t(e.clipboardData.getData(o))
                }
            }), function(e) {
                return new Promise(function(t, n) {
                    i = !0, r = t, o = e || "text/plain";
                    try {
                        document.execCommand("paste") || (i = !1, n(new Error("Unable to paste. Pasting only works in Internet Explorer at the moment.")))
                    } catch (e) {
                        i = !1, n(new Error(e))
                    }
                })
            }), "undefined" == typeof ClipboardEvent && void 0 !== window.clipboardData && void 0 !== window.clipboardData.setData && (
                /*! promise-polyfill 2.0.1 */
                function(r) {
                    function o(e, t) {
                        return function() {
                            e.apply(t, arguments)
                        }
                    }

                    function i(e) {
                        if ("object" != n(this)) throw new TypeError("Promises must be constructed via new");
                        if ("function" != typeof e) throw new TypeError("not a function");
                        this._state = null, this._value = null, this._deferreds = [], f(e, o(l, this), o(u, this))
                    }

                    function a(e) {
                        var t = this;
                        return null === this._state ? void this._deferreds.push(e) : void p(function() {
                            var n = t._state ? e.onFulfilled : e.onRejected;
                            if (null !== n) {
                                var r;
                                try {
                                    r = n(t._value)
                                } catch (t) {
                                    return void e.reject(t)
                                }
                                e.resolve(r)
                            } else(t._state ? e.resolve : e.reject)(t._value)
                        })
                    }

                    function l(e) {
                        try {
                            if (e === this) throw new TypeError("A promise cannot be resolved with itself.");
                            if (e && ("object" == n(e) || "function" == typeof e)) {
                                var t = e.then;
                                if ("function" == typeof t) return void f(o(t, e), o(l, this), o(u, this))
                            }
                            this._state = !0, this._value = e, c.call(this)
                        } catch (e) {
                            u.call(this, e)
                        }
                    }

                    function u(e) {
                        this._state = !1, this._value = e, c.call(this)
                    }

                    function c() {
                        for (var e = 0, t = this._deferreds.length; t > e; e++) a.call(this, this._deferreds[e]);
                        this._deferreds = null
                    }

                    function s(e, t, n, r) {
                        this.onFulfilled = "function" == typeof e ? e : null, this.onRejected = "function" == typeof t ? t : null, this.resolve = n, this.reject = r
                    }

                    function f(e, t, n) {
                        var r = !1;
                        try {
                            e(function(e) {
                                r || (r = !0, t(e))
                            }, function(e) {
                                r || (r = !0, n(e))
                            })
                        } catch (e) {
                            if (r) return;
                            r = !0, n(e)
                        }
                    }
                    var p = i.immediateFn || "function" == typeof t && t || function(e) {
                            setTimeout(e, 1)
                        },
                        d = Array.isArray || function(e) {
                            return "[object Array]" === Object.prototype.toString.call(e)
                        };
                    i.prototype.catch = function(e) {
                        return this.then(null, e)
                    }, i.prototype.then = function(e, t) {
                        var n = this;
                        return new i(function(r, o) {
                            a.call(n, new s(e, t, r, o))
                        })
                    }, i.all = function() {
                        var e = Array.prototype.slice.call(1 === arguments.length && d(arguments[0]) ? arguments[0] : arguments);
                        return new i(function(t, r) {
                            function o(a, l) {
                                try {
                                    if (l && ("object" == n(l) || "function" == typeof l)) {
                                        var u = l.then;
                                        if ("function" == typeof u) return void u.call(l, function(e) {
                                            o(a, e)
                                        }, r)
                                    }
                                    e[a] = l, 0 == --i && t(e)
                                } catch (e) {
                                    r(e)
                                }
                            }
                            if (0 === e.length) return t([]);
                            for (var i = e.length, a = 0; a < e.length; a++) o(a, e[a])
                        })
                    }, i.resolve = function(e) {
                        return e && "object" == n(e) && e.constructor === i ? e : new i(function(t) {
                            t(e)
                        })
                    }, i.reject = function(e) {
                        return new i(function(t, n) {
                            n(e)
                        })
                    }, i.race = function(e) {
                        return new i(function(t, n) {
                            for (var r = 0, o = e.length; o > r; r++) e[r].then(t, n)
                        })
                    }, e.exports ? e.exports = i : r.Promise || (r.Promise = i)
                }(this), a.copy = function(e) {
                    return new Promise(function(t, n) {
                        if ("string" != typeof e && !("text/plain" in e)) throw new Error("You must provide a text/plain type.");
                        var r = "string" == typeof e ? e : e["text/plain"];
                        window.clipboardData.setData("Text", r) ? t() : n(new Error("Copying was rejected."))
                    })
                }, a.paste = function() {
                    return new Promise(function(e, t) {
                        var n = window.clipboardData.getData("Text");
                        n ? e(n) : t(new Error("Pasting was rejected."))
                    })
                }), a
        }()