nutui/lib/plugin/cli/site/doc/compents/backtop/backtop.js

/*! NutUI2(2.0.2) - backtop.js, 4d177b46df0af221d246, 2019-01-25T10:47:27+08:00 */
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define("backtop", [], factory);
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		exports["backtop"] = factory();
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		root["backtop"] = factory();
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/******/ ({

/***/ 0:
/***/ (function(module, exports) {

// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
var global = module.exports = typeof window != 'undefined' && window.Math == Math
  ? window : typeof self != 'undefined' && self.Math == Math ? self
  // eslint-disable-next-line no-new-func
  : Function('return this')();
if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef


/***/ }),

/***/ 1:
/***/ (function(module, exports, __webpack_require__) {

// Thank's IE8 for his funny defineProperty
module.exports = !__webpack_require__(4)(function () {
  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
});


/***/ }),

/***/ 10:
/***/ (function(module, exports, __webpack_require__) {

var global = __webpack_require__(0);
var hide = __webpack_require__(9);
var has = __webpack_require__(5);
var SRC = __webpack_require__(19)('src');
var TO_STRING = 'toString';
var $toString = Function[TO_STRING];
var TPL = ('' + $toString).split(TO_STRING);

__webpack_require__(13).inspectSource = function (it) {
  return $toString.call(it);
};

(module.exports = function (O, key, val, safe) {
  var isFunction = typeof val == 'function';
  if (isFunction) has(val, 'name') || hide(val, 'name', key);
  if (O[key] === val) return;
  if (isFunction) has(val, SRC) || hide(val, SRC, O[key] ? '' + O[key] : TPL.join(String(key)));
  if (O === global) {
    O[key] = val;
  } else if (!safe) {
    delete O[key];
    hide(O, key, val);
  } else if (O[key]) {
    O[key] = val;
  } else {
    hide(O, key, val);
  }
// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
})(Function.prototype, TO_STRING, function toString() {
  return typeof this == 'function' && this[SRC] || $toString.call(this);
});


/***/ }),

/***/ 11:
/***/ (function(module, exports, __webpack_require__) {

// to indexed object, toObject with fallback for non-array-like ES3 strings
var IObject = __webpack_require__(33);
var defined = __webpack_require__(12);
module.exports = function (it) {
  return IObject(defined(it));
};


/***/ }),

/***/ 12:
/***/ (function(module, exports) {

// 7.2.1 RequireObjectCoercible(argument)
module.exports = function (it) {
  if (it == undefined) throw TypeError("Can't call method on  " + it);
  return it;
};


/***/ }),

/***/ 13:
/***/ (function(module, exports) {

var core = module.exports = { version: '2.6.1' };
if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef


/***/ }),

/***/ 14:
/***/ (function(module, exports) {

function _interopRequireDefault(obj) {
  return obj && obj.__esModule ? obj : {
    default: obj
  };
}

module.exports = _interopRequireDefault;

/***/ }),

/***/ 15:
/***/ (function(module, exports) {

// IE 8- don't enum bug keys
module.exports = (
  'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
).split(',');


/***/ }),

/***/ 16:
/***/ (function(module, exports) {

// 7.1.4 ToInteger
var ceil = Math.ceil;
var floor = Math.floor;
module.exports = function (it) {
  return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
};


/***/ }),

/***/ 17:
/***/ (function(module, exports, __webpack_require__) {

// 7.1.1 ToPrimitive(input [, PreferredType])
var isObject = __webpack_require__(3);
// instead of the ES6 spec version, we didn't implement @@toPrimitive case
// and the second argument - flag - preferred type is a string
module.exports = function (it, S) {
  if (!isObject(it)) return it;
  var fn, val;
  if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;
  if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;
  throw TypeError("Can't convert object to primitive value");
};


/***/ }),

/***/ 18:
/***/ (function(module, exports) {

var toString = {}.toString;

module.exports = function (it) {
  return toString.call(it).slice(8, -1);
};


/***/ }),

/***/ 19:
/***/ (function(module, exports) {

var id = 0;
var px = Math.random();
module.exports = function (key) {
  return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
};


/***/ }),

/***/ 2:
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(3);
module.exports = function (it) {
  if (!isObject(it)) throw TypeError(it + ' is not an object!');
  return it;
};


/***/ }),

/***/ 20:
/***/ (function(module, exports) {

module.exports = function (bitmap, value) {
  return {
    enumerable: !(bitmap & 1),
    configurable: !(bitmap & 2),
    writable: !(bitmap & 4),
    value: value
  };
};


/***/ }),

/***/ 21:
/***/ (function(module, exports, __webpack_require__) {

var shared = __webpack_require__(30)('keys');
var uid = __webpack_require__(19);
module.exports = function (key) {
  return shared[key] || (shared[key] = uid(key));
};


/***/ }),

/***/ 22:
/***/ (function(module, exports, __webpack_require__) {

// 7.1.15 ToLength
var toInteger = __webpack_require__(16);
var min = Math.min;
module.exports = function (it) {
  return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
};


/***/ }),

/***/ 220:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(221);
/* harmony import */ var _node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__);
/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in _node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__) if(__WEBPACK_IMPORT_KEY__ !== 'default') (function(key) { __webpack_require__.d(__webpack_exports__, key, function() { return _node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__[key]; }) }(__WEBPACK_IMPORT_KEY__));
 /* harmony default export */ __webpack_exports__["default"] = (_node_modules_babel_loader_lib_index_js_node_modules_vue_loader_lib_index_js_vue_loader_options_backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0___default.a); 

/***/ }),

/***/ 221:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

__webpack_require__(46);

//
//
//
//
//
//
//
var _default = {
  name: "nut-backtop",
  props: {
    distance: {
      type: Number,
      default: 200
    },
    bottom: {
      type: Number,
      default: 20
    },
    right: {
      type: Number,
      default: 10
    },
    duration: {
      type: Number,
      default: 1000
    },
    zIndex: {
      type: Number,
      default: 1111
    }
  },
  data: function data() {
    return {
      backTop: false
    };
  },
  mounted: function mounted() {
    window.addEventListener("scroll", this.handleScroll, false);
    window.addEventListener("resize", this.handleScroll, false);
  },
  beforeDestroy: function beforeDestroy() {
    window.removeEventListener("scroll", this.handleScroll, false);
    window.removeEventListener("resize", this.handleScroll, false);
  },
  computed: {
    styles: function styles() {
      return {
        bottom: "".concat(this.bottom, "px"),
        right: "".concat(this.right, "px"),
        "z-index": this.zIndex
      };
    }
  },
  methods: {
    handleScroll: function handleScroll() {
      this.backTop = window.pageYOffset >= this.distance;
    },
    goto: function goto() {
      var sTop = document.documentElement.scrollTop || document.body.scrollTop;
      this.scrollTop(window, sTop, 0, this.duration);
      this.$emit("click");
    },
    scrollTop: function scrollTop(el) {
      var from = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var to = arguments.length > 2 ? arguments[2] : undefined;
      var duration = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 500;
      var endCallback = arguments.length > 4 ? arguments[4] : undefined;
      this.el = el;
      var lastTime = 0;
      var vendors = ["webkit", "moz"];

      for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
        window.requestAnimationFrame = window[vendors[x] + "RequestAnimationFrame"];
        window.cancelAnimationFrame = window[vendors[x] + "CancelAnimationFrame"] || window[vendors[x] + "CancelRequestAnimationFrame"];
      }

      if (!window.requestAnimationFrame) {
        window.requestAnimationFrame = function (callback, element) {
          var currTime = new Date().getTime();
          var timeToCall = Math.max(0, 16.7 - (currTime - lastTime));
          var id = window.setTimeout(function () {
            callback(currTime + timeToCall);
          }, timeToCall);
          lastTime = currTime + timeToCall;
          return id;
        };
      }

      if (!window.cancelAnimationFrame) {
        window.cancelAnimationFrame = function (id) {
          clearTimeout(id);
        };
      }

      var difference = Math.abs(from - to);
      var step = Math.ceil(difference / duration * 50);
      this.scroll(from, to, step, endCallback);
    },
    scroll: function scroll(start, end, step, endCallback) {
      var _this = this;

      if (start === end) {
        endCallback && endCallback();
        return;
      }

      var d = start + step > end ? end : start + step;

      if (start > end) {
        d = start - step < end ? end : start - step;
      }

      if (this.el === window) {
        window.scrollTo(d, d);
      } else {
        this.el.scrollTop = d;
      }

      window.requestAnimationFrame(function () {
        return _this.scroll(d, end, step);
      });
    }
  }
};
exports.default = _default;

/***/ }),

/***/ 23:
/***/ (function(module, exports, __webpack_require__) {

var global = __webpack_require__(0);
var core = __webpack_require__(13);
var hide = __webpack_require__(9);
var redefine = __webpack_require__(10);
var ctx = __webpack_require__(24);
var PROTOTYPE = 'prototype';

var $export = function (type, name, source) {
  var IS_FORCED = type & $export.F;
  var IS_GLOBAL = type & $export.G;
  var IS_STATIC = type & $export.S;
  var IS_PROTO = type & $export.P;
  var IS_BIND = type & $export.B;
  var target = IS_GLOBAL ? global : IS_STATIC ? global[name] || (global[name] = {}) : (global[name] || {})[PROTOTYPE];
  var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});
  var expProto = exports[PROTOTYPE] || (exports[PROTOTYPE] = {});
  var key, own, out, exp;
  if (IS_GLOBAL) source = name;
  for (key in source) {
    // contains in native
    own = !IS_FORCED && target && target[key] !== undefined;
    // export native or passed
    out = (own ? target : source)[key];
    // bind timers to global for call from export context
    exp = IS_BIND && own ? ctx(out, global) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
    // extend global
    if (target) redefine(target, key, out, type & $export.U);
    // export
    if (exports[key] != out) hide(exports, key, exp);
    if (IS_PROTO && expProto[key] != out) expProto[key] = out;
  }
};
global.core = core;
// type bitmap
$export.F = 1;   // forced
$export.G = 2;   // global
$export.S = 4;   // static
$export.P = 8;   // proto
$export.B = 16;  // bind
$export.W = 32;  // wrap
$export.U = 64;  // safe
$export.R = 128; // real proto method for `library`
module.exports = $export;


/***/ }),

/***/ 234:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";

// CONCATENATED MODULE: ./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/vue-loader/lib??vue-loader-options!./src/packages/backtop/backtop.vue?vue&type=template&id=6814f82c&
var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{class:['nut-backtop', {'show': _vm.backTop}],style:(_vm.styles),on:{"click":_vm.goto}},[_vm._t("default",[_c('div',{staticClass:"nut-backtop-main"})])],2)}
var staticRenderFns = []


// CONCATENATED MODULE: ./src/packages/backtop/backtop.vue?vue&type=template&id=6814f82c&
/* concated harmony reexport render */__webpack_require__.d(__webpack_exports__, "a", function() { return render; });
/* concated harmony reexport staticRenderFns */__webpack_require__.d(__webpack_exports__, "b", function() { return staticRenderFns; });


/***/ }),

/***/ 24:
/***/ (function(module, exports, __webpack_require__) {

// optional / simple context binding
var aFunction = __webpack_require__(32);
module.exports = function (fn, that, length) {
  aFunction(fn);
  if (that === undefined) return fn;
  switch (length) {
    case 1: return function (a) {
      return fn.call(that, a);
    };
    case 2: return function (a, b) {
      return fn.call(that, a, b);
    };
    case 3: return function (a, b, c) {
      return fn.call(that, a, b, c);
    };
  }
  return function (/* ...args */) {
    return fn.apply(that, arguments);
  };
};


/***/ }),

/***/ 25:
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(3);
var document = __webpack_require__(0).document;
// typeof document.createElement is 'object' in old IE
var is = isObject(document) && isObject(document.createElement);
module.exports = function (it) {
  return is ? document.createElement(it) : {};
};


/***/ }),

/***/ 26:
/***/ (function(module, exports, __webpack_require__) {

module.exports = !__webpack_require__(1) && !__webpack_require__(4)(function () {
  return Object.defineProperty(__webpack_require__(25)('div'), 'a', { get: function () { return 7; } }).a != 7;
});


/***/ }),

/***/ 27:
/***/ (function(module, exports, __webpack_require__) {

var has = __webpack_require__(5);
var toIObject = __webpack_require__(11);
var arrayIndexOf = __webpack_require__(36)(false);
var IE_PROTO = __webpack_require__(21)('IE_PROTO');

module.exports = function (object, names) {
  var O = toIObject(object);
  var i = 0;
  var result = [];
  var key;
  for (key in O) if (key != IE_PROTO) has(O, key) && result.push(key);
  // Don't enum bug & hidden keys
  while (names.length > i) if (has(O, key = names[i++])) {
    ~arrayIndexOf(result, key) || result.push(key);
  }
  return result;
};


/***/ }),

/***/ 28:
/***/ (function(module, exports, __webpack_require__) {

// 19.1.2.14 / 15.2.3.14 Object.keys(O)
var $keys = __webpack_require__(27);
var enumBugKeys = __webpack_require__(15);

module.exports = Object.keys || function keys(O) {
  return $keys(O, enumBugKeys);
};


/***/ }),

/***/ 29:
/***/ (function(module, exports, __webpack_require__) {

var pIE = __webpack_require__(34);
var createDesc = __webpack_require__(20);
var toIObject = __webpack_require__(11);
var toPrimitive = __webpack_require__(17);
var has = __webpack_require__(5);
var IE8_DOM_DEFINE = __webpack_require__(26);
var gOPD = Object.getOwnPropertyDescriptor;

exports.f = __webpack_require__(1) ? gOPD : function getOwnPropertyDescriptor(O, P) {
  O = toIObject(O);
  P = toPrimitive(P, true);
  if (IE8_DOM_DEFINE) try {
    return gOPD(O, P);
  } catch (e) { /* empty */ }
  if (has(O, P)) return createDesc(!pIE.f.call(O, P), O[P]);
};


/***/ }),

/***/ 3:
/***/ (function(module, exports) {

module.exports = function (it) {
  return typeof it === 'object' ? it !== null : typeof it === 'function';
};


/***/ }),

/***/ 30:
/***/ (function(module, exports, __webpack_require__) {

var core = __webpack_require__(13);
var global = __webpack_require__(0);
var SHARED = '__core-js_shared__';
var store = global[SHARED] || (global[SHARED] = {});

(module.exports = function (key, value) {
  return store[key] || (store[key] = value !== undefined ? value : {});
})('versions', []).push({
  version: core.version,
  mode: __webpack_require__(31) ? 'pure' : 'global',
  copyright: '© 2018 Denis Pushkarev (zloirock.ru)'
});


/***/ }),

/***/ 31:
/***/ (function(module, exports) {

module.exports = false;


/***/ }),

/***/ 32:
/***/ (function(module, exports) {

module.exports = function (it) {
  if (typeof it != 'function') throw TypeError(it + ' is not a function!');
  return it;
};


/***/ }),

/***/ 33:
/***/ (function(module, exports, __webpack_require__) {

// fallback for non-array-like ES3 and non-enumerable old V8 strings
var cof = __webpack_require__(18);
// eslint-disable-next-line no-prototype-builtins
module.exports = Object('z').propertyIsEnumerable(0) ? Object : function (it) {
  return cof(it) == 'String' ? it.split('') : Object(it);
};


/***/ }),

/***/ 34:
/***/ (function(module, exports) {

exports.f = {}.propertyIsEnumerable;


/***/ }),

/***/ 35:
/***/ (function(module, exports, __webpack_require__) {

// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
var anObject = __webpack_require__(2);
var dPs = __webpack_require__(40);
var enumBugKeys = __webpack_require__(15);
var IE_PROTO = __webpack_require__(21)('IE_PROTO');
var Empty = function () { /* empty */ };
var PROTOTYPE = 'prototype';

// Create object with fake `null` prototype: use iframe Object with cleared prototype
var createDict = function () {
  // Thrash, waste and sodomy: IE GC bug
  var iframe = __webpack_require__(25)('iframe');
  var i = enumBugKeys.length;
  var lt = '<';
  var gt = '>';
  var iframeDocument;
  iframe.style.display = 'none';
  __webpack_require__(41).appendChild(iframe);
  iframe.src = 'javascript:'; // eslint-disable-line no-script-url
  // createDict = iframe.contentWindow.Object;
  // html.removeChild(iframe);
  iframeDocument = iframe.contentWindow.document;
  iframeDocument.open();
  iframeDocument.write(lt + 'script' + gt + 'document.F=Object' + lt + '/script' + gt);
  iframeDocument.close();
  createDict = iframeDocument.F;
  while (i--) delete createDict[PROTOTYPE][enumBugKeys[i]];
  return createDict();
};

module.exports = Object.create || function create(O, Properties) {
  var result;
  if (O !== null) {
    Empty[PROTOTYPE] = anObject(O);
    result = new Empty();
    Empty[PROTOTYPE] = null;
    // add "__proto__" for Object.getPrototypeOf polyfill
    result[IE_PROTO] = O;
  } else result = createDict();
  return Properties === undefined ? result : dPs(result, Properties);
};


/***/ }),

/***/ 36:
/***/ (function(module, exports, __webpack_require__) {

// false -> Array#indexOf
// true  -> Array#includes
var toIObject = __webpack_require__(11);
var toLength = __webpack_require__(22);
var toAbsoluteIndex = __webpack_require__(37);
module.exports = function (IS_INCLUDES) {
  return function ($this, el, fromIndex) {
    var O = toIObject($this);
    var length = toLength(O.length);
    var index = toAbsoluteIndex(fromIndex, length);
    var value;
    // Array#includes uses SameValueZero equality algorithm
    // eslint-disable-next-line no-self-compare
    if (IS_INCLUDES && el != el) while (length > index) {
      value = O[index++];
      // eslint-disable-next-line no-self-compare
      if (value != value) return true;
    // Array#indexOf ignores holes, Array#includes - not
    } else for (;length > index; index++) if (IS_INCLUDES || index in O) {
      if (O[index] === el) return IS_INCLUDES || index || 0;
    } return !IS_INCLUDES && -1;
  };
};


/***/ }),

/***/ 37:
/***/ (function(module, exports, __webpack_require__) {

var toInteger = __webpack_require__(16);
var max = Math.max;
var min = Math.min;
module.exports = function (index, length) {
  index = toInteger(index);
  return index < 0 ? max(index + length, 0) : min(index, length);
};


/***/ }),

/***/ 38:
/***/ (function(module, exports, __webpack_require__) {

var isObject = __webpack_require__(3);
var setPrototypeOf = __webpack_require__(42).set;
module.exports = function (that, target, C) {
  var S = target.constructor;
  var P;
  if (S !== C && typeof S == 'function' && (P = S.prototype) !== C.prototype && isObject(P) && setPrototypeOf) {
    setPrototypeOf(that, P);
  } return that;
};


/***/ }),

/***/ 39:
/***/ (function(module, exports, __webpack_require__) {

// 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)
var $keys = __webpack_require__(27);
var hiddenKeys = __webpack_require__(15).concat('length', 'prototype');

exports.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
  return $keys(O, hiddenKeys);
};


/***/ }),

/***/ 4:
/***/ (function(module, exports) {

module.exports = function (exec) {
  try {
    return !!exec();
  } catch (e) {
    return true;
  }
};


/***/ }),

/***/ 40:
/***/ (function(module, exports, __webpack_require__) {

var dP = __webpack_require__(6);
var anObject = __webpack_require__(2);
var getKeys = __webpack_require__(28);

module.exports = __webpack_require__(1) ? Object.defineProperties : function defineProperties(O, Properties) {
  anObject(O);
  var keys = getKeys(Properties);
  var length = keys.length;
  var i = 0;
  var P;
  while (length > i) dP.f(O, P = keys[i++], Properties[P]);
  return O;
};


/***/ }),

/***/ 41:
/***/ (function(module, exports, __webpack_require__) {

var document = __webpack_require__(0).document;
module.exports = document && document.documentElement;


/***/ }),

/***/ 42:
/***/ (function(module, exports, __webpack_require__) {

// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */
var isObject = __webpack_require__(3);
var anObject = __webpack_require__(2);
var check = function (O, proto) {
  anObject(O);
  if (!isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!");
};
module.exports = {
  set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
    function (test, buggy, set) {
      try {
        set = __webpack_require__(24)(Function.call, __webpack_require__(29).f(Object.prototype, '__proto__').set, 2);
        set(test, []);
        buggy = !(test instanceof Array);
      } catch (e) { buggy = true; }
      return function setPrototypeOf(O, proto) {
        check(O, proto);
        if (buggy) O.__proto__ = proto;
        else set(O, proto);
        return O;
      };
    }({}, false) : undefined),
  check: check
};


/***/ }),

/***/ 426:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


var _interopRequireDefault = __webpack_require__(14);

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _backtop = _interopRequireDefault(__webpack_require__(427));

__webpack_require__(428);

_backtop.default.install = function (Vue) {
  Vue.component(_backtop.default.name, _backtop.default);
};

var _default = _backtop.default;
exports.default = _default;

/***/ }),

/***/ 427:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _backtop_vue_vue_type_template_id_6814f82c___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(234);
/* harmony import */ var _backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(220);
/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in _backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__) if(__WEBPACK_IMPORT_KEY__ !== 'default') (function(key) { __webpack_require__.d(__webpack_exports__, key, function() { return _backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__[key]; }) }(__WEBPACK_IMPORT_KEY__));
/* harmony import */ var _node_modules_vue_loader_lib_runtime_componentNormalizer_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(8);





/* normalize component */

var component = Object(_node_modules_vue_loader_lib_runtime_componentNormalizer_js__WEBPACK_IMPORTED_MODULE_2__[/* default */ "a"])(
  _backtop_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__["default"],
  _backtop_vue_vue_type_template_id_6814f82c___WEBPACK_IMPORTED_MODULE_0__[/* render */ "a"],
  _backtop_vue_vue_type_template_id_6814f82c___WEBPACK_IMPORTED_MODULE_0__[/* staticRenderFns */ "b"],
  false,
  null,
  null,
  null
  
)

component.options.__file = "backtop.vue"
/* harmony default export */ __webpack_exports__["default"] = (component.exports);

/***/ }),

/***/ 428:
/***/ (function(module, exports, __webpack_require__) {

// extracted by mini-css-extract-plugin

/***/ }),

/***/ 46:
/***/ (function(module, exports, __webpack_require__) {

"use strict";

var global = __webpack_require__(0);
var has = __webpack_require__(5);
var cof = __webpack_require__(18);
var inheritIfRequired = __webpack_require__(38);
var toPrimitive = __webpack_require__(17);
var fails = __webpack_require__(4);
var gOPN = __webpack_require__(39).f;
var gOPD = __webpack_require__(29).f;
var dP = __webpack_require__(6).f;
var $trim = __webpack_require__(48).trim;
var NUMBER = 'Number';
var $Number = global[NUMBER];
var Base = $Number;
var proto = $Number.prototype;
// Opera ~12 has broken Object#toString
var BROKEN_COF = cof(__webpack_require__(35)(proto)) == NUMBER;
var TRIM = 'trim' in String.prototype;

// 7.1.3 ToNumber(argument)
var toNumber = function (argument) {
  var it = toPrimitive(argument, false);
  if (typeof it == 'string' && it.length > 2) {
    it = TRIM ? it.trim() : $trim(it, 3);
    var first = it.charCodeAt(0);
    var third, radix, maxCode;
    if (first === 43 || first === 45) {
      third = it.charCodeAt(2);
      if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
    } else if (first === 48) {
      switch (it.charCodeAt(1)) {
        case 66: case 98: radix = 2; maxCode = 49; break; // fast equal /^0b[01]+$/i
        case 79: case 111: radix = 8; maxCode = 55; break; // fast equal /^0o[0-7]+$/i
        default: return +it;
      }
      for (var digits = it.slice(2), i = 0, l = digits.length, code; i < l; i++) {
        code = digits.charCodeAt(i);
        // parseInt parses a string to a first unavailable symbol
        // but ToNumber should return NaN if a string contains unavailable symbols
        if (code < 48 || code > maxCode) return NaN;
      } return parseInt(digits, radix);
    }
  } return +it;
};

if (!$Number(' 0o1') || !$Number('0b1') || $Number('+0x1')) {
  $Number = function Number(value) {
    var it = arguments.length < 1 ? 0 : value;
    var that = this;
    return that instanceof $Number
      // check on 1..constructor(foo) case
      && (BROKEN_COF ? fails(function () { proto.valueOf.call(that); }) : cof(that) != NUMBER)
        ? inheritIfRequired(new Base(toNumber(it)), that, $Number) : toNumber(it);
  };
  for (var keys = __webpack_require__(1) ? gOPN(Base) : (
    // ES3:
    'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
    // ES6 (in case, if modules with ES6 Number statics required before):
    'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
    'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
  ).split(','), j = 0, key; keys.length > j; j++) {
    if (has(Base, key = keys[j]) && !has($Number, key)) {
      dP($Number, key, gOPD(Base, key));
    }
  }
  $Number.prototype = proto;
  proto.constructor = $Number;
  __webpack_require__(10)(global, NUMBER, $Number);
}


/***/ }),

/***/ 48:
/***/ (function(module, exports, __webpack_require__) {

var $export = __webpack_require__(23);
var defined = __webpack_require__(12);
var fails = __webpack_require__(4);
var spaces = __webpack_require__(49);
var space = '[' + spaces + ']';
var non = '\u200b\u0085';
var ltrim = RegExp('^' + space + space + '*');
var rtrim = RegExp(space + space + '*$');

var exporter = function (KEY, exec, ALIAS) {
  var exp = {};
  var FORCE = fails(function () {
    return !!spaces[KEY]() || non[KEY]() != non;
  });
  var fn = exp[KEY] = FORCE ? exec(trim) : spaces[KEY];
  if (ALIAS) exp[ALIAS] = fn;
  $export($export.P + $export.F * FORCE, 'String', exp);
};

// 1 -> String#trimLeft
// 2 -> String#trimRight
// 3 -> String#trim
var trim = exporter.trim = function (string, TYPE) {
  string = String(defined(string));
  if (TYPE & 1) string = string.replace(ltrim, '');
  if (TYPE & 2) string = string.replace(rtrim, '');
  return string;
};

module.exports = exporter;


/***/ }),

/***/ 49:
/***/ (function(module, exports) {

module.exports = '\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003' +
  '\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';


/***/ }),

/***/ 5:
/***/ (function(module, exports) {

var hasOwnProperty = {}.hasOwnProperty;
module.exports = function (it, key) {
  return hasOwnProperty.call(it, key);
};


/***/ }),

/***/ 6:
/***/ (function(module, exports, __webpack_require__) {

var anObject = __webpack_require__(2);
var IE8_DOM_DEFINE = __webpack_require__(26);
var toPrimitive = __webpack_require__(17);
var dP = Object.defineProperty;

exports.f = __webpack_require__(1) ? Object.defineProperty : function defineProperty(O, P, Attributes) {
  anObject(O);
  P = toPrimitive(P, true);
  anObject(Attributes);
  if (IE8_DOM_DEFINE) try {
    return dP(O, P, Attributes);
  } catch (e) { /* empty */ }
  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
  if ('value' in Attributes) O[P] = Attributes.value;
  return O;
};


/***/ }),

/***/ 8:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "a", function() { return normalizeComponent; });
/* globals __VUE_SSR_CONTEXT__ */

// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).
// This module is a runtime utility for cleaner component module output and will
// be included in the final webpack user bundle.

function normalizeComponent (
  scriptExports,
  render,
  staticRenderFns,
  functionalTemplate,
  injectStyles,
  scopeId,
  moduleIdentifier, /* server only */
  shadowMode /* vue-cli only */
) {
  // Vue.extend constructor export interop
  var options = typeof scriptExports === 'function'
    ? scriptExports.options
    : scriptExports

  // render functions
  if (render) {
    options.render = render
    options.staticRenderFns = staticRenderFns
    options._compiled = true
  }

  // functional template
  if (functionalTemplate) {
    options.functional = true
  }

  // scopedId
  if (scopeId) {
    options._scopeId = 'data-v-' + scopeId
  }

  var hook
  if (moduleIdentifier) { // server build
    hook = function (context) {
      // 2.3 injection
      context =
        context || // cached call
        (this.$vnode && this.$vnode.ssrContext) || // stateful
        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional
      // 2.2 with runInNewContext: true
      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {
        context = __VUE_SSR_CONTEXT__
      }
      // inject component styles
      if (injectStyles) {
        injectStyles.call(this, context)
      }
      // register component module identifier for async chunk inferrence
      if (context && context._registeredComponents) {
        context._registeredComponents.add(moduleIdentifier)
      }
    }
    // used by ssr in case component is cached and beforeCreate
    // never gets called
    options._ssrRegister = hook
  } else if (injectStyles) {
    hook = shadowMode
      ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }
      : injectStyles
  }

  if (hook) {
    if (options.functional) {
      // for template-only hot-reload because in that case the render fn doesn't
      // go through the normalizer
      options._injectStyles = hook
      // register for functioal component in vue file
      var originalRender = options.render
      options.render = function renderWithStyleInjection (h, context) {
        hook.call(context)
        return originalRender(h, context)
      }
    } else {
      // inject component registration as beforeCreate hook
      var existing = options.beforeCreate
      options.beforeCreate = existing
        ? [].concat(existing, hook)
        : [hook]
    }
  }

  return {
    exports: scriptExports,
    options: options
  }
}


/***/ }),

/***/ 9:
/***/ (function(module, exports, __webpack_require__) {

var dP = __webpack_require__(6);
var createDesc = __webpack_require__(20);
module.exports = __webpack_require__(1) ? function (object, key, value) {
  return dP.f(object, key, createDesc(1, value));
} : function (object, key, value) {
  object[key] = value;
  return object;
};


/***/ })

/******/ });
});
//# sourceMappingURL=backtop.js.map