text: (function webpackUniversalModuleDefinition(root, factory) {
  	if(typeof exports === 'object' && typeof module === 'object')
  		module.exports = factory();
  	else if(typeof define === 'function' && define.amd)
  		define([], factory);
  	else if(typeof exports === 'object')
  		exports["scroll"] = factory();
  	else
  		root["cube"] = root["cube"] || {}, root["cube"]["scroll"] = factory();
  })(typeof self !== 'undefined' ? self : this, function() {
  return /******/ (function(modules) { // webpackBootstrap
  /******/ 	// The module cache
  /******/ 	var installedModules = {};
  /******/
  /******/ 	// The require function
  /******/ 	function __webpack_require__(moduleId) {
  /******/
  /******/ 		// Check if module is in cache
  /******/ 		if(installedModules[moduleId]) {
  /******/ 			return installedModules[moduleId].exports;
  /******/ 		}
  /******/ 		// Create a new module (and put it into the cache)
  /******/ 		var module = installedModules[moduleId] = {
  /******/ 			i: moduleId,
  /******/ 			l: false,
  /******/ 			exports: {}
  /******/ 		};
  /******/
  /******/ 		// Execute the module function
  /******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
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  /******/ 		// Flag the module as loaded
  /******/ 		module.l = true;
  /******/
  /******/ 		// Return the exports of the module
  /******/ 		return module.exports;
  /******/ 	}
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  /******/ 	// expose the modules object (__webpack_modules__)
  /******/ 	__webpack_require__.m = modules;
  /******/
  /******/ 	// expose the module cache
  /******/ 	__webpack_require__.c = installedModules;
  /******/
  /******/ 	// define getter function for harmony exports
  /******/ 	__webpack_require__.d = function(exports, name, getter) {
  /******/ 		if(!__webpack_require__.o(exports, name)) {
  /******/ 			Object.defineProperty(exports, name, {
  /******/ 				configurable: false,
  /******/ 				enumerable: true,
  /******/ 				get: getter
  /******/ 			});
  /******/ 		}
  /******/ 	};
  /******/
  /******/ 	// getDefaultExport function for compatibility with non-harmony modules
  /******/ 	__webpack_require__.n = function(module) {
  /******/ 		var getter = module && module.__esModule ?
  /******/ 			function getDefault() { return module['default']; } :
  /******/ 			function getModuleExports() { return module; };
  /******/ 		__webpack_require__.d(getter, 'a', getter);
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  /******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
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  /******/ 	// __webpack_public_path__
  /******/ 	__webpack_require__.p = "./";
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  /******/ 	return __webpack_require__(__webpack_require__.s = 334);
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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) {
  
  var core = module.exports = { version: '2.5.3' };
  if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef
  
  
  /***/ }),
  /* 2 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var store = __webpack_require__(20)('wks');
  var uid = __webpack_require__(16);
  var Symbol = __webpack_require__(0).Symbol;
  var USE_SYMBOL = typeof Symbol == 'function';
  
  var $exports = module.exports = function (name) {
    return store[name] || (store[name] =
      USE_SYMBOL && Symbol[name] || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name));
  };
  
  $exports.store = store;
  
  
  /***/ }),
  /* 3 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // Thank's IE8 for his funny defineProperty
  module.exports = !__webpack_require__(9)(function () {
    return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
  });
  
  
  /***/ }),
  /* 4 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var anObject = __webpack_require__(11);
  var IE8_DOM_DEFINE = __webpack_require__(29);
  var toPrimitive = __webpack_require__(23);
  var dP = Object.defineProperty;
  
  exports.f = __webpack_require__(3) ? 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;
  };
  
  
  /***/ }),
  /* 5 */
  /***/ (function(module, exports) {
  
  /* globals __VUE_SSR_CONTEXT__ */
  
  // this module is a runtime utility for cleaner component module output and will
  // be included in the final webpack user bundle
  
  module.exports = function normalizeComponent (
    rawScriptExports,
    compiledTemplate,
    injectStyles,
    scopeId,
    moduleIdentifier /* server only */
  ) {
    var esModule
    var scriptExports = rawScriptExports = rawScriptExports || {}
  
    // ES6 modules interop
    var type = typeof rawScriptExports.default
    if (type === 'object' || type === 'function') {
      esModule = rawScriptExports
      scriptExports = rawScriptExports.default
    }
  
    // Vue.extend constructor export interop
    var options = typeof scriptExports === 'function'
      ? scriptExports.options
      : scriptExports
  
    // render functions
    if (compiledTemplate) {
      options.render = compiledTemplate.render
      options.staticRenderFns = compiledTemplate.staticRenderFns
    }
  
    // scopedId
    if (scopeId) {
      options._scopeId = 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 = injectStyles
    }
  
    if (hook) {
      var functional = options.functional
      var existing = functional
        ? options.render
        : options.beforeCreate
      if (!functional) {
        // inject component registration as beforeCreate hook
        options.beforeCreate = existing
          ? [].concat(existing, hook)
          : [hook]
      } else {
        // register for functioal component in vue file
        options.render = function renderWithStyleInjection (h, context) {
          hook.call(context)
          return existing(h, context)
        }
      }
    }
  
    return {
      esModule: esModule,
      exports: scriptExports,
      options: options
    }
  }
  
  
  /***/ }),
  /* 6 */
  /***/ (function(module, exports) {
  
  var hasOwnProperty = {}.hasOwnProperty;
  module.exports = function (it, key) {
    return hasOwnProperty.call(it, key);
  };
  
  
  /***/ }),
  /* 7 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var dP = __webpack_require__(4);
  var createDesc = __webpack_require__(14);
  module.exports = __webpack_require__(3) ? function (object, key, value) {
    return dP.f(object, key, createDesc(1, value));
  } : function (object, key, value) {
    object[key] = value;
    return object;
  };
  
  
  /***/ }),
  /* 8 */
  /***/ (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__(17);
  module.exports = function (it) {
    return IObject(defined(it));
  };
  
  
  /***/ }),
  /* 9 */
  /***/ (function(module, exports) {
  
  module.exports = function (exec) {
    try {
      return !!exec();
    } catch (e) {
      return true;
    }
  };
  
  
  /***/ }),
  /* 10 */
  /***/ (function(module, exports) {
  
  module.exports = function (it) {
    return typeof it === 'object' ? it !== null : typeof it === 'function';
  };
  
  
  /***/ }),
  /* 11 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var isObject = __webpack_require__(10);
  module.exports = function (it) {
    if (!isObject(it)) throw TypeError(it + ' is not an object!');
    return it;
  };
  
  
  /***/ }),
  /* 12 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var global = __webpack_require__(0);
  var core = __webpack_require__(1);
  var ctx = __webpack_require__(35);
  var hide = __webpack_require__(7);
  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 IS_WRAP = type & $export.W;
    var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});
    var expProto = exports[PROTOTYPE];
    var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE];
    var key, own, out;
    if (IS_GLOBAL) source = name;
    for (key in source) {
      // contains in native
      own = !IS_FORCED && target && target[key] !== undefined;
      if (own && key in exports) continue;
      // export native or passed
      out = own ? target[key] : source[key];
      // prevent global pollution for namespaces
      exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
      // bind timers to global for call from export context
      : IS_BIND && own ? ctx(out, global)
      // wrap global constructors for prevent change them in library
      : IS_WRAP && target[key] == out ? (function (C) {
        var F = function (a, b, c) {
          if (this instanceof C) {
            switch (arguments.length) {
              case 0: return new C();
              case 1: return new C(a);
              case 2: return new C(a, b);
            } return new C(a, b, c);
          } return C.apply(this, arguments);
        };
        F[PROTOTYPE] = C[PROTOTYPE];
        return F;
      // make static versions for prototype methods
      })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;
      // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%
      if (IS_PROTO) {
        (exports.virtual || (exports.virtual = {}))[key] = out;
        // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%
        if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out);
      }
    }
  };
  // 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;
  
  
  /***/ }),
  /* 13 */
  /***/ (function(module, exports) {
  
  module.exports = {};
  
  
  /***/ }),
  /* 14 */
  /***/ (function(module, exports) {
  
  module.exports = function (bitmap, value) {
    return {
      enumerable: !(bitmap & 1),
      configurable: !(bitmap & 2),
      writable: !(bitmap & 4),
      value: value
    };
  };
  
  
  /***/ }),
  /* 15 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 19.1.2.14 / 15.2.3.14 Object.keys(O)
  var $keys = __webpack_require__(30);
  var enumBugKeys = __webpack_require__(21);
  
  module.exports = Object.keys || function keys(O) {
    return $keys(O, enumBugKeys);
  };
  
  
  /***/ }),
  /* 16 */
  /***/ (function(module, exports) {
  
  var id = 0;
  var px = Math.random();
  module.exports = function (key) {
    return 'Symbol('.concat(key === undefined ? '' : key, ')_', (++id + px).toString(36));
  };
  
  
  /***/ }),
  /* 17 */
  /***/ (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;
  };
  
  
  /***/ }),
  /* 18 */
  /***/ (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);
  };
  
  
  /***/ }),
  /* 19 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var shared = __webpack_require__(20)('keys');
  var uid = __webpack_require__(16);
  module.exports = function (key) {
    return shared[key] || (shared[key] = uid(key));
  };
  
  
  /***/ }),
  /* 20 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var global = __webpack_require__(0);
  var SHARED = '__core-js_shared__';
  var store = global[SHARED] || (global[SHARED] = {});
  module.exports = function (key) {
    return store[key] || (store[key] = {});
  };
  
  
  /***/ }),
  /* 21 */
  /***/ (function(module, exports) {
  
  // IE 8- don't enum bug keys
  module.exports = (
    'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
  ).split(',');
  
  
  /***/ }),
  /* 22 */
  /***/ (function(module, exports) {
  
  exports.f = {}.propertyIsEnumerable;
  
  
  /***/ }),
  /* 23 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 7.1.1 ToPrimitive(input [, PreferredType])
  var isObject = __webpack_require__(10);
  // 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");
  };
  
  
  /***/ }),
  /* 24 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 7.1.13 ToObject(argument)
  var defined = __webpack_require__(17);
  module.exports = function (it) {
    return Object(defined(it));
  };
  
  
  /***/ }),
  /* 25 */
  /***/ (function(module, exports) {
  
  var toString = {}.toString;
  
  module.exports = function (it) {
    return toString.call(it).slice(8, -1);
  };
  
  
  /***/ }),
  /* 26 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var def = __webpack_require__(4).f;
  var has = __webpack_require__(6);
  var TAG = __webpack_require__(2)('toStringTag');
  
  module.exports = function (it, tag, stat) {
    if (it && !has(it = stat ? it : it.prototype, TAG)) def(it, TAG, { configurable: true, value: tag });
  };
  
  
  /***/ }),
  /* 27 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var isObject = __webpack_require__(10);
  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) : {};
  };
  
  
  /***/ }),
  /* 28 */
  /***/ (function(module, exports) {
  
  module.exports = true;
  
  
  /***/ }),
  /* 29 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = !__webpack_require__(3) && !__webpack_require__(9)(function () {
    return Object.defineProperty(__webpack_require__(27)('div'), 'a', { get: function () { return 7; } }).a != 7;
  });
  
  
  /***/ }),
  /* 30 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var has = __webpack_require__(6);
  var toIObject = __webpack_require__(8);
  var arrayIndexOf = __webpack_require__(45)(false);
  var IE_PROTO = __webpack_require__(19)('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;
  };
  
  
  /***/ }),
  /* 31 */
  /***/ (function(module, exports) {
  
  exports.f = Object.getOwnPropertySymbols;
  
  
  /***/ }),
  /* 32 */
  /***/ (function(module, exports, __webpack_require__) {
  
  /* WEBPACK VAR INJECTION */(function(process) {var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod.exports);
      global.debug = mod.exports;
    }
  })(this, function (exports) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    var warn = exports.warn = function warn(msg, componentName) {
      if (process.env.NODE_ENV !== 'production') {
        var component = componentName ? '<' + componentName + '> ' : '';
        console.error('[Cube warn]: ' + component + msg);
      }
    };
  
    var tip = exports.tip = function tip(msg, componentName) {
      if (process.env.NODE_ENV !== 'production') {
        var component = componentName ? '<' + componentName + '> ' : '';
        console.warn('[Cube tip]: ' + component + msg);
      }
    };
  });
  /* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(61)))
  
  /***/ }),
  /* 33 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // fallback for non-array-like ES3 and non-enumerable old V8 strings
  var cof = __webpack_require__(25);
  // 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, __webpack_require__) {
  
  "use strict";
  
  var LIBRARY = __webpack_require__(28);
  var $export = __webpack_require__(12);
  var redefine = __webpack_require__(39);
  var hide = __webpack_require__(7);
  var has = __webpack_require__(6);
  var Iterators = __webpack_require__(13);
  var $iterCreate = __webpack_require__(51);
  var setToStringTag = __webpack_require__(26);
  var getPrototypeOf = __webpack_require__(54);
  var ITERATOR = __webpack_require__(2)('iterator');
  var BUGGY = !([].keys && 'next' in [].keys()); // Safari has buggy iterators w/o `next`
  var FF_ITERATOR = '@@iterator';
  var KEYS = 'keys';
  var VALUES = 'values';
  
  var returnThis = function () { return this; };
  
  module.exports = function (Base, NAME, Constructor, next, DEFAULT, IS_SET, FORCED) {
    $iterCreate(Constructor, NAME, next);
    var getMethod = function (kind) {
      if (!BUGGY && kind in proto) return proto[kind];
      switch (kind) {
        case KEYS: return function keys() { return new Constructor(this, kind); };
        case VALUES: return function values() { return new Constructor(this, kind); };
      } return function entries() { return new Constructor(this, kind); };
    };
    var TAG = NAME + ' Iterator';
    var DEF_VALUES = DEFAULT == VALUES;
    var VALUES_BUG = false;
    var proto = Base.prototype;
    var $native = proto[ITERATOR] || proto[FF_ITERATOR] || DEFAULT && proto[DEFAULT];
    var $default = (!BUGGY && $native) || getMethod(DEFAULT);
    var $entries = DEFAULT ? !DEF_VALUES ? $default : getMethod('entries') : undefined;
    var $anyNative = NAME == 'Array' ? proto.entries || $native : $native;
    var methods, key, IteratorPrototype;
    // Fix native
    if ($anyNative) {
      IteratorPrototype = getPrototypeOf($anyNative.call(new Base()));
      if (IteratorPrototype !== Object.prototype && IteratorPrototype.next) {
        // Set @@toStringTag to native iterators
        setToStringTag(IteratorPrototype, TAG, true);
        // fix for some old engines
        if (!LIBRARY && !has(IteratorPrototype, ITERATOR)) hide(IteratorPrototype, ITERATOR, returnThis);
      }
    }
    // fix Array#{values, @@iterator}.name in V8 / FF
    if (DEF_VALUES && $native && $native.name !== VALUES) {
      VALUES_BUG = true;
      $default = function values() { return $native.call(this); };
    }
    // Define iterator
    if ((!LIBRARY || FORCED) && (BUGGY || VALUES_BUG || !proto[ITERATOR])) {
      hide(proto, ITERATOR, $default);
    }
    // Plug for library
    Iterators[NAME] = $default;
    Iterators[TAG] = returnThis;
    if (DEFAULT) {
      methods = {
        values: DEF_VALUES ? $default : getMethod(VALUES),
        keys: IS_SET ? $default : getMethod(KEYS),
        entries: $entries
      };
      if (FORCED) for (key in methods) {
        if (!(key in proto)) redefine(proto, key, methods[key]);
      } else $export($export.P + $export.F * (BUGGY || VALUES_BUG), NAME, methods);
    }
    return methods;
  };
  
  
  /***/ }),
  /* 35 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // optional / simple context binding
  var aFunction = __webpack_require__(43);
  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);
    };
  };
  
  
  /***/ }),
  /* 36 */,
  /* 37 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 7.1.15 ToLength
  var toInteger = __webpack_require__(18);
  var min = Math.min;
  module.exports = function (it) {
    return it > 0 ? min(toInteger(it), 0x1fffffffffffff) : 0; // pow(2, 53) - 1 == 9007199254740991
  };
  
  
  /***/ }),
  /* 38 */
  /***/ (function(module, exports, __webpack_require__) {
  
  "use strict";
  
  var $at = __webpack_require__(50)(true);
  
  // 21.1.3.27 String.prototype[@@iterator]()
  __webpack_require__(34)(String, 'String', function (iterated) {
    this._t = String(iterated); // target
    this._i = 0;                // next index
  // 21.1.5.2.1 %StringIteratorPrototype%.next()
  }, function () {
    var O = this._t;
    var index = this._i;
    var point;
    if (index >= O.length) return { value: undefined, done: true };
    point = $at(O, index);
    this._i += point.length;
    return { value: point, done: false };
  });
  
  
  /***/ }),
  /* 39 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = __webpack_require__(7);
  
  
  /***/ }),
  /* 40 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
  var anObject = __webpack_require__(11);
  var dPs = __webpack_require__(52);
  var enumBugKeys = __webpack_require__(21);
  var IE_PROTO = __webpack_require__(19)('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__(27)('iframe');
    var i = enumBugKeys.length;
    var lt = '<';
    var gt = '>';
    var iframeDocument;
    iframe.style.display = 'none';
    __webpack_require__(53).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);
  };
  
  
  /***/ }),
  /* 41 */,
  /* 42 */,
  /* 43 */
  /***/ (function(module, exports) {
  
  module.exports = function (it) {
    if (typeof it != 'function') throw TypeError(it + ' is not a function!');
    return it;
  };
  
  
  /***/ }),
  /* 44 */,
  /* 45 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // false -> Array#indexOf
  // true  -> Array#includes
  var toIObject = __webpack_require__(8);
  var toLength = __webpack_require__(37);
  var toAbsoluteIndex = __webpack_require__(46);
  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;
    };
  };
  
  
  /***/ }),
  /* 46 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var toInteger = __webpack_require__(18);
  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);
  };
  
  
  /***/ }),
  /* 47 */
  /***/ (function(module, exports, __webpack_require__) {
  
  __webpack_require__(55);
  var global = __webpack_require__(0);
  var hide = __webpack_require__(7);
  var Iterators = __webpack_require__(13);
  var TO_STRING_TAG = __webpack_require__(2)('toStringTag');
  
  var DOMIterables = ('CSSRuleList,CSSStyleDeclaration,CSSValueList,ClientRectList,DOMRectList,DOMStringList,' +
    'DOMTokenList,DataTransferItemList,FileList,HTMLAllCollection,HTMLCollection,HTMLFormElement,HTMLSelectElement,' +
    'MediaList,MimeTypeArray,NamedNodeMap,NodeList,PaintRequestList,Plugin,PluginArray,SVGLengthList,SVGNumberList,' +
    'SVGPathSegList,SVGPointList,SVGStringList,SVGTransformList,SourceBufferList,StyleSheetList,TextTrackCueList,' +
    'TextTrackList,TouchList').split(',');
  
  for (var i = 0; i < DOMIterables.length; i++) {
    var NAME = DOMIterables[i];
    var Collection = global[NAME];
    var proto = Collection && Collection.prototype;
    if (proto && !proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME);
    Iterators[NAME] = Iterators.Array;
  }
  
  
  /***/ }),
  /* 48 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod.exports);
      global.string = mod.exports;
    }
  })(this, function (exports) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    exports.camelize = camelize;
    exports.kebab = kebab;
    var camelizeRE = /-(\w)/g;
    function camelize(str) {
      str = String(str);
      return str.replace(camelizeRE, function (m, c) {
        return c ? c.toUpperCase() : '';
      });
    }
  
    function kebab(str) {
      str = String(str);
      return str.replace(/([A-Z])/g, '-$1').toLowerCase();
    }
  });
  
  /***/ }),
  /* 49 */,
  /* 50 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var toInteger = __webpack_require__(18);
  var defined = __webpack_require__(17);
  // true  -> String#at
  // false -> String#codePointAt
  module.exports = function (TO_STRING) {
    return function (that, pos) {
      var s = String(defined(that));
      var i = toInteger(pos);
      var l = s.length;
      var a, b;
      if (i < 0 || i >= l) return TO_STRING ? '' : undefined;
      a = s.charCodeAt(i);
      return a < 0xd800 || a > 0xdbff || i + 1 === l || (b = s.charCodeAt(i + 1)) < 0xdc00 || b > 0xdfff
        ? TO_STRING ? s.charAt(i) : a
        : TO_STRING ? s.slice(i, i + 2) : (a - 0xd800 << 10) + (b - 0xdc00) + 0x10000;
    };
  };
  
  
  /***/ }),
  /* 51 */
  /***/ (function(module, exports, __webpack_require__) {
  
  "use strict";
  
  var create = __webpack_require__(40);
  var descriptor = __webpack_require__(14);
  var setToStringTag = __webpack_require__(26);
  var IteratorPrototype = {};
  
  // 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
  __webpack_require__(7)(IteratorPrototype, __webpack_require__(2)('iterator'), function () { return this; });
  
  module.exports = function (Constructor, NAME, next) {
    Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) });
    setToStringTag(Constructor, NAME + ' Iterator');
  };
  
  
  /***/ }),
  /* 52 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var dP = __webpack_require__(4);
  var anObject = __webpack_require__(11);
  var getKeys = __webpack_require__(15);
  
  module.exports = __webpack_require__(3) ? 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;
  };
  
  
  /***/ }),
  /* 53 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var document = __webpack_require__(0).document;
  module.exports = document && document.documentElement;
  
  
  /***/ }),
  /* 54 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O)
  var has = __webpack_require__(6);
  var toObject = __webpack_require__(24);
  var IE_PROTO = __webpack_require__(19)('IE_PROTO');
  var ObjectProto = Object.prototype;
  
  module.exports = Object.getPrototypeOf || function (O) {
    O = toObject(O);
    if (has(O, IE_PROTO)) return O[IE_PROTO];
    if (typeof O.constructor == 'function' && O instanceof O.constructor) {
      return O.constructor.prototype;
    } return O instanceof Object ? ObjectProto : null;
  };
  
  
  /***/ }),
  /* 55 */
  /***/ (function(module, exports, __webpack_require__) {
  
  "use strict";
  
  var addToUnscopables = __webpack_require__(56);
  var step = __webpack_require__(57);
  var Iterators = __webpack_require__(13);
  var toIObject = __webpack_require__(8);
  
  // 22.1.3.4 Array.prototype.entries()
  // 22.1.3.13 Array.prototype.keys()
  // 22.1.3.29 Array.prototype.values()
  // 22.1.3.30 Array.prototype[@@iterator]()
  module.exports = __webpack_require__(34)(Array, 'Array', function (iterated, kind) {
    this._t = toIObject(iterated); // target
    this._i = 0;                   // next index
    this._k = kind;                // kind
  // 22.1.5.2.1 %ArrayIteratorPrototype%.next()
  }, function () {
    var O = this._t;
    var kind = this._k;
    var index = this._i++;
    if (!O || index >= O.length) {
      this._t = undefined;
      return step(1);
    }
    if (kind == 'keys') return step(0, index);
    if (kind == 'values') return step(0, O[index]);
    return step(0, [index, O[index]]);
  }, 'values');
  
  // argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
  Iterators.Arguments = Iterators.Array;
  
  addToUnscopables('keys');
  addToUnscopables('values');
  addToUnscopables('entries');
  
  
  /***/ }),
  /* 56 */
  /***/ (function(module, exports) {
  
  module.exports = function () { /* empty */ };
  
  
  /***/ }),
  /* 57 */
  /***/ (function(module, exports) {
  
  module.exports = function (done, value) {
    return { value: value, done: !!done };
  };
  
  
  /***/ }),
  /* 58 */,
  /* 59 */,
  /* 60 */,
  /* 61 */
  /***/ (function(module, exports) {
  
  // shim for using process in browser
  var process = module.exports = {};
  
  // cached from whatever global is present so that test runners that stub it
  // don't break things.  But we need to wrap it in a try catch in case it is
  // wrapped in strict mode code which doesn't define any globals.  It's inside a
  // function because try/catches deoptimize in certain engines.
  
  var cachedSetTimeout;
  var cachedClearTimeout;
  
  function defaultSetTimout() {
      throw new Error('setTimeout has not been defined');
  }
  function defaultClearTimeout () {
      throw new Error('clearTimeout has not been defined');
  }
  (function () {
      try {
          if (typeof setTimeout === 'function') {
              cachedSetTimeout = setTimeout;
          } else {
              cachedSetTimeout = defaultSetTimout;
          }
      } catch (e) {
          cachedSetTimeout = defaultSetTimout;
      }
      try {
          if (typeof clearTimeout === 'function') {
              cachedClearTimeout = clearTimeout;
          } else {
              cachedClearTimeout = defaultClearTimeout;
          }
      } catch (e) {
          cachedClearTimeout = defaultClearTimeout;
      }
  } ())
  function runTimeout(fun) {
      if (cachedSetTimeout === setTimeout) {
          //normal enviroments in sane situations
          return setTimeout(fun, 0);
      }
      // if setTimeout wasn't available but was latter defined
      if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
          cachedSetTimeout = setTimeout;
          return setTimeout(fun, 0);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedSetTimeout(fun, 0);
      } catch(e){
          try {
              // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
              return cachedSetTimeout.call(null, fun, 0);
          } catch(e){
              // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
              return cachedSetTimeout.call(this, fun, 0);
          }
      }
  
  
  }
  function runClearTimeout(marker) {
      if (cachedClearTimeout === clearTimeout) {
          //normal enviroments in sane situations
          return clearTimeout(marker);
      }
      // if clearTimeout wasn't available but was latter defined
      if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
          cachedClearTimeout = clearTimeout;
          return clearTimeout(marker);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedClearTimeout(marker);
      } catch (e){
          try {
              // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
              return cachedClearTimeout.call(null, marker);
          } catch (e){
              // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
              // Some versions of I.E. have different rules for clearTimeout vs setTimeout
              return cachedClearTimeout.call(this, marker);
          }
      }
  
  
  
  }
  var queue = [];
  var draining = false;
  var currentQueue;
  var queueIndex = -1;
  
  function cleanUpNextTick() {
      if (!draining || !currentQueue) {
          return;
      }
      draining = false;
      if (currentQueue.length) {
          queue = currentQueue.concat(queue);
      } else {
          queueIndex = -1;
      }
      if (queue.length) {
          drainQueue();
      }
  }
  
  function drainQueue() {
      if (draining) {
          return;
      }
      var timeout = runTimeout(cleanUpNextTick);
      draining = true;
  
      var len = queue.length;
      while(len) {
          currentQueue = queue;
          queue = [];
          while (++queueIndex < len) {
              if (currentQueue) {
                  currentQueue[queueIndex].run();
              }
          }
          queueIndex = -1;
          len = queue.length;
      }
      currentQueue = null;
      draining = false;
      runClearTimeout(timeout);
  }
  
  process.nextTick = function (fun) {
      var args = new Array(arguments.length - 1);
      if (arguments.length > 1) {
          for (var i = 1; i < arguments.length; i++) {
              args[i - 1] = arguments[i];
          }
      }
      queue.push(new Item(fun, args));
      if (queue.length === 1 && !draining) {
          runTimeout(drainQueue);
      }
  };
  
  // v8 likes predictible objects
  function Item(fun, array) {
      this.fun = fun;
      this.array = array;
  }
  Item.prototype.run = function () {
      this.fun.apply(null, this.array);
  };
  process.title = 'browser';
  process.browser = true;
  process.env = {};
  process.argv = [];
  process.version = ''; // empty string to avoid regexp issues
  process.versions = {};
  
  function noop() {}
  
  process.on = noop;
  process.addListener = noop;
  process.once = noop;
  process.off = noop;
  process.removeListener = noop;
  process.removeAllListeners = noop;
  process.emit = noop;
  process.prependListener = noop;
  process.prependOnceListener = noop;
  
  process.listeners = function (name) { return [] }
  
  process.binding = function (name) {
      throw new Error('process.binding is not supported');
  };
  
  process.cwd = function () { return '/' };
  process.chdir = function (dir) {
      throw new Error('process.chdir is not supported');
  };
  process.umask = function() { return 0; };
  
  
  /***/ }),
  /* 62 */,
  /* 63 */,
  /* 64 */,
  /* 65 */,
  /* 66 */,
  /* 67 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // getting tag from 19.1.3.6 Object.prototype.toString()
  var cof = __webpack_require__(25);
  var TAG = __webpack_require__(2)('toStringTag');
  // ES3 wrong here
  var ARG = cof(function () { return arguments; }()) == 'Arguments';
  
  // fallback for IE11 Script Access Denied error
  var tryGet = function (it, key) {
    try {
      return it[key];
    } catch (e) { /* empty */ }
  };
  
  module.exports = function (it) {
    var O, T, B;
    return it === undefined ? 'Undefined' : it === null ? 'Null'
      // @@toStringTag case
      : typeof (T = tryGet(O = Object(it), TAG)) == 'string' ? T
      // builtinTag case
      : ARG ? cof(O)
      // ES3 arguments fallback
      : (B = cof(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : B;
  };
  
  
  /***/ }),
  /* 68 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = { "default": __webpack_require__(91), __esModule: true };
  
  /***/ }),
  /* 69 */,
  /* 70 */,
  /* 71 */,
  /* 72 */,
  /* 73 */,
  /* 74 */
  /***/ (function(module, __webpack_exports__, __webpack_require__) {
  
  "use strict";
  Object.defineProperty(__webpack_exports__, "__esModule", { value: true });
  /*!
   * better-normal-scroll v1.12.6
   * (c) 2016-2018 ustbhuangyi
   * Released under the MIT License.
   */
  var slicedToArray = function () {
    function sliceIterator(arr, i) {
      var _arr = [];
      var _n = true;
      var _d = false;
      var _e = undefined;
  
      try {
        for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
          _arr.push(_s.value);
  
          if (i && _arr.length === i) break;
        }
      } catch (err) {
        _d = true;
        _e = err;
      } finally {
        try {
          if (!_n && _i["return"]) _i["return"]();
        } finally {
          if (_d) throw _e;
        }
      }
  
      return _arr;
    }
  
    return function (arr, i) {
      if (Array.isArray(arr)) {
        return arr;
      } else if (Symbol.iterator in Object(arr)) {
        return sliceIterator(arr, i);
      } else {
        throw new TypeError("Invalid attempt to destructure non-iterable instance");
      }
    };
  }();
  
  
  
  
  
  
  
  
  
  
  
  
  
  var toConsumableArray = function (arr) {
    if (Array.isArray(arr)) {
      for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];
  
      return arr2;
    } else {
      return Array.from(arr);
    }
  };
  
  function eventMixin(BScroll) {
    BScroll.prototype.on = function (type, fn) {
      var context = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this;
  
      if (!this._events[type]) {
        this._events[type] = [];
      }
  
      this._events[type].push([fn, context]);
    };
  
    BScroll.prototype.once = function (type, fn) {
      var context = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : this;
  
      function magic() {
        this.off(type, magic);
  
        fn.apply(context, arguments);
      }
      // To expose the corresponding function method in order to execute the off method
      magic.fn = fn;
  
      this.on(type, magic);
    };
  
    BScroll.prototype.off = function (type, fn) {
      var _events = this._events[type];
      if (!_events) {
        return;
      }
  
      var count = _events.length;
      while (count--) {
        if (_events[count][0] === fn || _events[count][0] && _events[count][0].fn === fn) {
          _events[count][0] = undefined;
        }
      }
    };
  
    BScroll.prototype.trigger = function (type) {
      var events = this._events[type];
      if (!events) {
        return;
      }
  
      var len = events.length;
      var eventsCopy = [].concat(toConsumableArray(events));
      for (var i = 0; i < len; i++) {
        var event = eventsCopy[i];
  
        var _event = slicedToArray(event, 2),
            fn = _event[0],
            context = _event[1];
  
        if (fn) {
          fn.apply(context, [].slice.call(arguments, 1));
        }
      }
    };
  }
  
  // ssr support
  var inBrowser = typeof window !== 'undefined';
  var ua = inBrowser && navigator.userAgent.toLowerCase();
  var isWeChatDevTools = ua && /wechatdevtools/.test(ua);
  var isAndroid = ua && ua.indexOf('android') > 0;
  
  function getNow() {
    return window.performance && window.performance.now ? window.performance.now() + window.performance.timing.navigationStart : +new Date();
  }
  
  function extend(target) {
    for (var _len = arguments.length, rest = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      rest[_key - 1] = arguments[_key];
    }
  
    for (var i = 0; i < rest.length; i++) {
      var source = rest[i];
      for (var key in source) {
        target[key] = source[key];
      }
    }
    return target;
  }
  
  function isUndef(v) {
    return v === undefined || v === null;
  }
  
  function getDistance(x, y) {
    return Math.sqrt(x * x + y * y);
  }
  
  var elementStyle = inBrowser && document.createElement('div').style;
  
  var vendor = function () {
    if (!inBrowser) {
      return false;
    }
    var transformNames = {
      webkit: 'webkitTransform',
      Moz: 'MozTransform',
      O: 'OTransform',
      ms: 'msTransform',
      standard: 'transform'
    };
  
    for (var key in transformNames) {
      if (elementStyle[transformNames[key]] !== undefined) {
        return key;
      }
    }
  
    return false;
  }();
  
  function prefixStyle(style) {
    if (vendor === false) {
      return false;
    }
  
    if (vendor === 'standard') {
      if (style === 'transitionEnd') {
        return 'transitionend';
      }
      return style;
    }
  
    return vendor + style.charAt(0).toUpperCase() + style.substr(1);
  }
  
  function addEvent(el, type, fn, capture) {
    el.addEventListener(type, fn, { passive: false, capture: !!capture });
  }
  
  function removeEvent(el, type, fn, capture) {
    el.removeEventListener(type, fn, { passive: false, capture: !!capture });
  }
  
  function offset(el) {
    var left = 0;
    var top = 0;
  
    while (el) {
      left -= el.offsetLeft;
      top -= el.offsetTop;
      el = el.offsetParent;
    }
  
    return {
      left: left,
      top: top
    };
  }
  
  function offsetToBody(el) {
    var rect = el.getBoundingClientRect();
  
    return {
      left: -(rect.left + window.pageXOffset),
      top: -(rect.top + window.pageYOffset)
    };
  }
  
  var transform = prefixStyle('transform');
  
  var hasPerspective = inBrowser && prefixStyle('perspective') in elementStyle;
  // fix issue #361
  var hasTouch = inBrowser && ('ontouchstart' in window || isWeChatDevTools);
  var hasTransform = transform !== false;
  var hasTransition = inBrowser && prefixStyle('transition') in elementStyle;
  
  var style = {
    transform: transform,
    transitionTimingFunction: prefixStyle('transitionTimingFunction'),
    transitionDuration: prefixStyle('transitionDuration'),
    transitionDelay: prefixStyle('transitionDelay'),
    transformOrigin: prefixStyle('transformOrigin'),
    transitionEnd: prefixStyle('transitionEnd')
  };
  
  var TOUCH_EVENT = 1;
  var MOUSE_EVENT = 2;
  
  var eventType = {
    touchstart: TOUCH_EVENT,
    touchmove: TOUCH_EVENT,
    touchend: TOUCH_EVENT,
  
    mousedown: MOUSE_EVENT,
    mousemove: MOUSE_EVENT,
    mouseup: MOUSE_EVENT
  };
  
  function getRect(el) {
    if (el instanceof window.SVGElement) {
      var rect = el.getBoundingClientRect();
      return {
        top: rect.top,
        left: rect.left,
        width: rect.width,
        height: rect.height
      };
    } else {
      return {
        top: el.offsetTop,
        left: el.offsetLeft,
        width: el.offsetWidth,
        height: el.offsetHeight
      };
    }
  }
  
  function preventDefaultException(el, exceptions) {
    for (var i in exceptions) {
      if (exceptions[i].test(el[i])) {
        return true;
      }
    }
    return false;
  }
  
  function tap(e, eventName) {
    var ev = document.createEvent('Event');
    ev.initEvent(eventName, true, true);
    ev.pageX = e.pageX;
    ev.pageY = e.pageY;
    e.target.dispatchEvent(ev);
  }
  
  function click(e) {
    var event = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'click';
  
    var eventSource = void 0;
    if (e.type === 'mouseup' || e.type === 'mousecancel') {
      eventSource = e;
    } else if (e.type === 'touchend' || e.type === 'touchcancel') {
      eventSource = e.changedTouches[0];
    }
    var posSrc = {};
    if (eventSource) {
      posSrc.screenX = eventSource.screenX || 0;
      posSrc.screenY = eventSource.screenY || 0;
      posSrc.clientX = eventSource.clientX || 0;
      posSrc.clientY = eventSource.clientY || 0;
    }
    var ev = void 0;
    var bubbles = true;
    var cancelable = true;
    if (typeof MouseEvent !== 'undefined') {
      try {
        ev = new MouseEvent(event, extend({
          bubbles: bubbles,
          cancelable: cancelable
        }, posSrc));
      } catch (e) {
        createEvent();
      }
    } else {
      createEvent();
    }
  
    function createEvent() {
      ev = document.createEvent('Event');
      ev.initEvent(event, bubbles, cancelable);
      extend(ev, posSrc);
    }
  
    // forwardedTouchEvent set to true in case of the conflict with fastclick
    ev.forwardedTouchEvent = true;
    ev._constructed = true;
    e.target.dispatchEvent(ev);
  }
  
  function dblclick(e) {
    click(e, 'dblclick');
  }
  
  function prepend(el, target) {
    if (target.firstChild) {
      before(el, target.firstChild);
    } else {
      target.appendChild(el);
    }
  }
  
  function before(el, target) {
    target.parentNode.insertBefore(el, target);
  }
  
  function removeChild(el, child) {
    el.removeChild(child);
  }
  
  var DEFAULT_OPTIONS = {
    startX: 0,
    startY: 0,
    scrollX: false,
    scrollY: true,
    freeScroll: false,
    directionLockThreshold: 5,
    eventPassthrough: '',
    click: false,
    tap: false,
    /**
     * support any side
     * bounce: {
     *   top: true,
     *   bottom: true,
     *   left: true,
     *   right: true
     * }
     */
    bounce: true,
    bounceTime: 800,
    momentum: true,
    momentumLimitTime: 300,
    momentumLimitDistance: 15,
    swipeTime: 2500,
    swipeBounceTime: 500,
    deceleration: 0.0015,
    flickLimitTime: 200,
    flickLimitDistance: 100,
    resizePolling: 60,
    probeType: 0,
    preventDefault: true,
    preventDefaultException: {
      tagName: /^(INPUT|TEXTAREA|BUTTON|SELECT)$/
    },
    HWCompositing: true,
    useTransition: true,
    useTransform: true,
    bindToWrapper: false,
    disableMouse: hasTouch,
    disableTouch: !hasTouch,
    observeDOM: true,
    autoBlur: true,
    /**
     * for picker
     * wheel: {
     *   selectedIndex: 0,
     *   rotate: 25,
     *   adjustTime: 400
     *   wheelWrapperClass: 'wheel-scroll',
     *   wheelItemClass: 'wheel-item'
     * }
     */
    wheel: false,
    /**
     * for slide
     * snap: {
     *   loop: false,
     *   el: domEl,
     *   threshold: 0.1,
     *   stepX: 100,
     *   stepY: 100,
     *   speed: 400,
     *   easing: {
     *     style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
     *     fn: function (t) {
     *       return t * (2 - t)
     *     }
     *   }
     *   listenFlick: true
     * }
     */
    snap: false,
    /**
     * for scrollbar
     * scrollbar: {
     *   fade: true,
     *   interactive: false
     * }
     */
    scrollbar: false,
    /**
     * for pull down and refresh
     * pullDownRefresh: {
     *   threshold: 50,
     *   stop: 20
     * }
     */
    pullDownRefresh: false,
    /**
     * for pull up and load
     * pullUpLoad: {
     *   threshold: 50
     * }
     */
    pullUpLoad: false,
    /**
     * for mouse wheel
     * mouseWheel: {
     *   speed: 20,
     *   invert: false,
     *   easeTime: 300
     * }
     */
    mouseWheel: false,
    stopPropagation: false,
    /**
     * for zoom
     * zoom: {
     *   start: 1,
     *   min: 1,
     *   max: 4
     * }
     */
    zoom: false,
    /**
     * for infinity
     * infinity: {
     *   render(item, div) {
     *   },
     *   createTombstone() {
     *   },
     *   fetch(count) {
     *   }
     * }
     */
    infinity: false,
    /**
     * for double click
     * dblclick: {
     *   delay: 300
     * }
     */
    dblclick: false
  };
  
  function initMixin(BScroll) {
    BScroll.prototype._init = function (el, options) {
      this._handleOptions(options);
  
      // init private custom events
      this._events = {};
  
      this.x = 0;
      this.y = 0;
      this.directionX = 0;
      this.directionY = 0;
  
      this.setScale(1);
  
      this._addDOMEvents();
  
      this._initExtFeatures();
  
      this._watchTransition();
  
      if (this.options.observeDOM) {
        this._initDOMObserver();
      }
  
      if (this.options.autoBlur) {
        this._handleAutoBlur();
      }
  
      this.refresh();
  
      if (!this.options.snap) {
        this.scrollTo(this.options.startX, this.options.startY);
      }
  
      this.enable();
    };
  
    BScroll.prototype.setScale = function (scale) {
      this.lastScale = isUndef(this.scale) ? scale : this.scale;
      this.scale = scale;
    };
  
    BScroll.prototype._handleOptions = function (options) {
      this.options = extend({}, DEFAULT_OPTIONS, options);
  
      this.translateZ = this.options.HWCompositing && hasPerspective ? ' translateZ(0)' : '';
  
      this.options.useTransition = this.options.useTransition && hasTransition;
      this.options.useTransform = this.options.useTransform && hasTransform;
  
      this.options.preventDefault = !this.options.eventPassthrough && this.options.preventDefault;
  
      // If you want eventPassthrough I have to lock one of the axes
      this.options.scrollX = this.options.eventPassthrough === 'horizontal' ? false : this.options.scrollX;
      this.options.scrollY = this.options.eventPassthrough === 'vertical' ? false : this.options.scrollY;
  
      // With eventPassthrough we also need lockDirection mechanism
      this.options.freeScroll = this.options.freeScroll && !this.options.eventPassthrough;
      this.options.directionLockThreshold = this.options.eventPassthrough ? 0 : this.options.directionLockThreshold;
  
      if (this.options.tap === true) {
        this.options.tap = 'tap';
      }
    };
  
    BScroll.prototype._addDOMEvents = function () {
      var eventOperation = addEvent;
      this._handleDOMEvents(eventOperation);
    };
  
    BScroll.prototype._removeDOMEvents = function () {
      var eventOperation = removeEvent;
      this._handleDOMEvents(eventOperation);
    };
  
    BScroll.prototype._handleDOMEvents = function (eventOperation) {
      var target = this.options.bindToWrapper ? this.wrapper : window;
      eventOperation(window, 'orientationchange', this);
      eventOperation(window, 'resize', this);
  
      if (this.options.click) {
        eventOperation(this.wrapper, 'click', this, true);
      }
  
      if (!this.options.disableMouse) {
        eventOperation(this.wrapper, 'mousedown', this);
        eventOperation(target, 'mousemove', this);
        eventOperation(target, 'mousecancel', this);
        eventOperation(target, 'mouseup', this);
      }
  
      if (hasTouch && !this.options.disableTouch) {
        eventOperation(this.wrapper, 'touchstart', this);
        eventOperation(target, 'touchmove', this);
        eventOperation(target, 'touchcancel', this);
        eventOperation(target, 'touchend', this);
      }
  
      eventOperation(this.scroller, style.transitionEnd, this);
    };
  
    BScroll.prototype._initExtFeatures = function () {
      if (this.options.snap) {
        this._initSnap();
      }
      if (this.options.scrollbar) {
        this._initScrollbar();
      }
      if (this.options.pullUpLoad) {
        this._initPullUp();
      }
      if (this.options.pullDownRefresh) {
        this._initPullDown();
      }
      if (this.options.wheel) {
        this._initWheel();
      }
      if (this.options.mouseWheel) {
        this._initMouseWheel();
      }
      if (this.options.zoom) {
        this._initZoom();
      }
      if (this.options.infinity) {
        this._initInfinite();
      }
    };
  
    BScroll.prototype._watchTransition = function () {
      if (typeof Object.defineProperty !== 'function') {
        return;
      }
      var me = this;
      var isInTransition = false;
      var key = this.useTransition ? 'isInTransition' : 'isAnimating';
      Object.defineProperty(this, key, {
        get: function get() {
          return isInTransition;
        },
        set: function set(newVal) {
          isInTransition = newVal;
          // fix issue #359
          var el = me.scroller.children.length ? me.scroller.children : [me.scroller];
          var pointerEvents = isInTransition && !me.pulling ? 'none' : 'auto';
          for (var i = 0; i < el.length; i++) {
            el[i].style.pointerEvents = pointerEvents;
          }
        }
      });
    };
  
    BScroll.prototype._handleAutoBlur = function () {
      this.on('scrollStart', function () {
        var activeElement = document.activeElement;
        if (activeElement && (activeElement.tagName === 'INPUT' || activeElement.tagName === 'TEXTAREA')) {
          activeElement.blur();
        }
      });
    };
  
    BScroll.prototype._initDOMObserver = function () {
      var _this = this;
  
      if (typeof MutationObserver !== 'undefined') {
        var timer = void 0;
        var observer = new MutationObserver(function (mutations) {
          // don't do any refresh during the transition, or outside of the boundaries
          if (_this._shouldNotRefresh()) {
            return;
          }
          var immediateRefresh = false;
          var deferredRefresh = false;
          for (var i = 0; i < mutations.length; i++) {
            var mutation = mutations[i];
            if (mutation.type !== 'attributes') {
              immediateRefresh = true;
              break;
            } else {
              if (mutation.target !== _this.scroller) {
                deferredRefresh = true;
                break;
              }
            }
          }
          if (immediateRefresh) {
            _this.refresh();
          } else if (deferredRefresh) {
            // attributes changes too often
            clearTimeout(timer);
            timer = setTimeout(function () {
              if (!_this._shouldNotRefresh()) {
                _this.refresh();
              }
            }, 60);
          }
        });
        var config = {
          attributes: true,
          childList: true,
          subtree: true
        };
        observer.observe(this.scroller, config);
  
        this.on('destroy', function () {
          observer.disconnect();
        });
      } else {
        this._checkDOMUpdate();
      }
    };
  
    BScroll.prototype._shouldNotRefresh = function () {
      var outsideBoundaries = this.x > this.minScrollX || this.x < this.maxScrollX || this.y > this.minScrollY || this.y < this.maxScrollY;
  
      return this.isInTransition || this.stopFromTransition || outsideBoundaries;
    };
  
    BScroll.prototype._checkDOMUpdate = function () {
      var scrollerRect = getRect(this.scroller);
      var oldWidth = scrollerRect.width;
      var oldHeight = scrollerRect.height;
  
      function check() {
        if (this.destroyed) {
          return;
        }
        scrollerRect = getRect(this.scroller);
        var newWidth = scrollerRect.width;
        var newHeight = scrollerRect.height;
  
        if (oldWidth !== newWidth || oldHeight !== newHeight) {
          this.refresh();
        }
        oldWidth = newWidth;
        oldHeight = newHeight;
  
        next.call(this);
      }
  
      function next() {
        var _this2 = this;
  
        setTimeout(function () {
          check.call(_this2);
        }, 1000);
      }
  
      next.call(this);
    };
  
    BScroll.prototype.handleEvent = function (e) {
      switch (e.type) {
        case 'touchstart':
        case 'mousedown':
          this._start(e);
          if (this.options.zoom && e.touches && e.touches.length > 1) {
            this._zoomStart(e);
          }
          break;
        case 'touchmove':
        case 'mousemove':
          if (this.options.zoom && e.touches && e.touches.length > 1) {
            this._zoom(e);
          } else {
            this._move(e);
          }
          break;
        case 'touchend':
        case 'mouseup':
        case 'touchcancel':
        case 'mousecancel':
          if (this.scaled) {
            this._zoomEnd(e);
          } else {
            this._end(e);
          }
          break;
        case 'orientationchange':
        case 'resize':
          this._resize();
          break;
        case 'transitionend':
        case 'webkitTransitionEnd':
        case 'oTransitionEnd':
        case 'MSTransitionEnd':
          this._transitionEnd(e);
          break;
        case 'click':
          if (this.enabled && !e._constructed) {
            if (!preventDefaultException(e.target, this.options.preventDefaultException)) {
              e.preventDefault();
              e.stopPropagation();
            }
          }
          break;
        case 'wheel':
        case 'DOMMouseScroll':
        case 'mousewheel':
          this._onMouseWheel(e);
          break;
      }
    };
  
    BScroll.prototype.refresh = function () {
      var isWrapperStatic = window.getComputedStyle(this.wrapper, null).position === 'static';
      var wrapperRect = getRect(this.wrapper);
      this.wrapperWidth = wrapperRect.width;
      this.wrapperHeight = wrapperRect.height;
  
      var scrollerRect = getRect(this.scroller);
      this.scrollerWidth = Math.round(scrollerRect.width * this.scale);
      this.scrollerHeight = Math.round(scrollerRect.height * this.scale);
  
      this.relativeX = scrollerRect.left;
      this.relativeY = scrollerRect.top;
  
      if (isWrapperStatic) {
        this.relativeX -= wrapperRect.left;
        this.relativeY -= wrapperRect.top;
      }
  
      this.minScrollX = 0;
      this.minScrollY = 0;
  
      var wheel = this.options.wheel;
      if (wheel) {
        this.items = this.scroller.children;
        this.options.itemHeight = this.itemHeight = this.items.length ? this.scrollerHeight / this.items.length : 0;
        if (this.selectedIndex === undefined) {
          this.selectedIndex = wheel.selectedIndex || 0;
        }
        this.options.startY = -this.selectedIndex * this.itemHeight;
        this.maxScrollX = 0;
        this.maxScrollY = -this.itemHeight * (this.items.length - 1);
      } else {
        this.maxScrollX = this.wrapperWidth - this.scrollerWidth;
        if (!this.options.infinity) {
          this.maxScrollY = this.wrapperHeight - this.scrollerHeight;
        }
        if (this.maxScrollX < 0) {
          this.maxScrollX -= this.relativeX;
          this.minScrollX = -this.relativeX;
        } else if (this.scale > 1) {
          this.maxScrollX = this.maxScrollX / 2 - this.relativeX;
          this.minScrollX = this.maxScrollX;
        }
        if (this.maxScrollY < 0) {
          this.maxScrollY -= this.relativeY;
          this.minScrollY = -this.relativeY;
        } else if (this.scale > 1) {
          this.maxScrollY = this.maxScrollY / 2 - this.relativeY;
          this.minScrollY = this.maxScrollY;
        }
      }
  
      this.hasHorizontalScroll = this.options.scrollX && this.maxScrollX < this.minScrollX;
      this.hasVerticalScroll = this.options.scrollY && this.maxScrollY < this.minScrollY;
  
      if (!this.hasHorizontalScroll) {
        this.maxScrollX = this.minScrollX;
        this.scrollerWidth = this.wrapperWidth;
      }
  
      if (!this.hasVerticalScroll) {
        this.maxScrollY = this.minScrollY;
        this.scrollerHeight = this.wrapperHeight;
      }
  
      this.endTime = 0;
      this.directionX = 0;
      this.directionY = 0;
      this.wrapperOffset = offset(this.wrapper);
  
      this.trigger('refresh');
  
      !this.scaled && this.resetPosition();
    };
  
    BScroll.prototype.enable = function () {
      this.enabled = true;
    };
  
    BScroll.prototype.disable = function () {
      this.enabled = false;
    };
  }
  
  var ease = {
    // easeOutQuint
    swipe: {
      style: 'cubic-bezier(0.23, 1, 0.32, 1)',
      fn: function fn(t) {
        return 1 + --t * t * t * t * t;
      }
    },
    // easeOutQuard
    swipeBounce: {
      style: 'cubic-bezier(0.25, 0.46, 0.45, 0.94)',
      fn: function fn(t) {
        return t * (2 - t);
      }
    },
    // easeOutQuart
    bounce: {
      style: 'cubic-bezier(0.165, 0.84, 0.44, 1)',
      fn: function fn(t) {
        return 1 - --t * t * t * t;
      }
    }
  };
  
  function momentum(current, start, time, lowerMargin, upperMargin, wrapperSize, options) {
    var distance = current - start;
    var speed = Math.abs(distance) / time;
  
    var deceleration = options.deceleration,
        itemHeight = options.itemHeight,
        swipeBounceTime = options.swipeBounceTime,
        wheel = options.wheel,
        swipeTime = options.swipeTime;
  
    var duration = swipeTime;
    var rate = wheel ? 4 : 15;
  
    var destination = current + speed / deceleration * (distance < 0 ? -1 : 1);
  
    if (wheel && itemHeight) {
      destination = Math.round(destination / itemHeight) * itemHeight;
    }
  
    if (destination < lowerMargin) {
      destination = wrapperSize ? Math.max(lowerMargin - wrapperSize / 4, lowerMargin - wrapperSize / rate * speed) : lowerMargin;
      duration = swipeBounceTime;
    } else if (destination > upperMargin) {
      destination = wrapperSize ? Math.min(upperMargin + wrapperSize / 4, upperMargin + wrapperSize / rate * speed) : upperMargin;
      duration = swipeBounceTime;
    }
  
    return {
      destination: Math.round(destination),
      duration: duration
    };
  }
  
  var DEFAULT_INTERVAL = 100 / 60;
  
  function noop() {}
  
  var requestAnimationFrame = function () {
    if (!inBrowser) {
      /* istanbul ignore if */
      return noop;
    }
    return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame ||
    // if all else fails, use setTimeout
    function (callback) {
      return window.setTimeout(callback, (callback.interval || DEFAULT_INTERVAL) / 2); // make interval as precise as possible.
    };
  }();
  
  var cancelAnimationFrame = function () {
    if (!inBrowser) {
      /* istanbul ignore if */
      return noop;
    }
    return window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || window.oCancelAnimationFrame || function (id) {
      window.clearTimeout(id);
    };
  }();
  
  var DIRECTION_UP = 1;
  var DIRECTION_DOWN = -1;
  var DIRECTION_LEFT = 1;
  var DIRECTION_RIGHT = -1;
  
  var PROBE_DEBOUNCE = 1;
  
  var PROBE_REALTIME = 3;
  
  function warn(msg) {
    console.error('[BScroll warn]: ' + msg);
  }
  
  function assert(condition, msg) {
    if (!condition) {
      throw new Error('[BScroll] ' + msg);
    }
  }
  
  function coreMixin(BScroll) {
    BScroll.prototype._start = function (e) {
      var _eventType = eventType[e.type];
      if (_eventType !== TOUCH_EVENT) {
        if (e.button !== 0) {
          return;
        }
      }
      if (!this.enabled || this.destroyed || this.initiated && this.initiated !== _eventType) {
        return;
      }
      this.initiated = _eventType;
  
      if (this.options.preventDefault && !preventDefaultException(e.target, this.options.preventDefaultException)) {
        e.preventDefault();
      }
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      this.moved = false;
      this.distX = 0;
      this.distY = 0;
      this.directionX = 0;
      this.directionY = 0;
      this.movingDirectionX = 0;
      this.movingDirectionY = 0;
      this.directionLocked = 0;
  
      this._transitionTime();
      this.startTime = getNow();
  
      if (this.options.wheel) {
        this.target = e.target;
      }
  
      this.stop();
  
      var point = e.touches ? e.touches[0] : e;
  
      this.startX = this.x;
      this.startY = this.y;
      this.absStartX = this.x;
      this.absStartY = this.y;
      this.pointX = point.pageX;
      this.pointY = point.pageY;
  
      this.trigger('beforeScrollStart');
    };
  
    BScroll.prototype._move = function (e) {
      if (!this.enabled || this.destroyed || eventType[e.type] !== this.initiated) {
        return;
      }
  
      if (this.options.preventDefault) {
        e.preventDefault();
      }
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      var point = e.touches ? e.touches[0] : e;
      var deltaX = point.pageX - this.pointX;
      var deltaY = point.pageY - this.pointY;
  
      this.pointX = point.pageX;
      this.pointY = point.pageY;
  
      this.distX += deltaX;
      this.distY += deltaY;
  
      var absDistX = Math.abs(this.distX);
      var absDistY = Math.abs(this.distY);
  
      var timestamp = getNow();
  
      // We need to move at least momentumLimitDistance pixels for the scrolling to initiate
      if (timestamp - this.endTime > this.options.momentumLimitTime && absDistY < this.options.momentumLimitDistance && absDistX < this.options.momentumLimitDistance) {
        return;
      }
  
      // If you are scrolling in one direction lock the other
      if (!this.directionLocked && !this.options.freeScroll) {
        if (absDistX > absDistY + this.options.directionLockThreshold) {
          this.directionLocked = 'h'; // lock horizontally
        } else if (absDistY >= absDistX + this.options.directionLockThreshold) {
          this.directionLocked = 'v'; // lock vertically
        } else {
          this.directionLocked = 'n'; // no lock
        }
      }
  
      if (this.directionLocked === 'h') {
        if (this.options.eventPassthrough === 'vertical') {
          e.preventDefault();
        } else if (this.options.eventPassthrough === 'horizontal') {
          this.initiated = false;
          return;
        }
        deltaY = 0;
      } else if (this.directionLocked === 'v') {
        if (this.options.eventPassthrough === 'horizontal') {
          e.preventDefault();
        } else if (this.options.eventPassthrough === 'vertical') {
          this.initiated = false;
          return;
        }
        deltaX = 0;
      }
  
      deltaX = this.hasHorizontalScroll ? deltaX : 0;
      deltaY = this.hasVerticalScroll ? deltaY : 0;
      this.movingDirectionX = deltaX > 0 ? DIRECTION_RIGHT : deltaX < 0 ? DIRECTION_LEFT : 0;
      this.movingDirectionY = deltaY > 0 ? DIRECTION_DOWN : deltaY < 0 ? DIRECTION_UP : 0;
  
      var newX = this.x + deltaX;
      var newY = this.y + deltaY;
  
      var top = false;
      var bottom = false;
      var left = false;
      var right = false;
      // Slow down or stop if outside of the boundaries
      var bounce = this.options.bounce;
      if (bounce !== false) {
        top = bounce.top === undefined ? true : bounce.top;
        bottom = bounce.bottom === undefined ? true : bounce.bottom;
        left = bounce.left === undefined ? true : bounce.left;
        right = bounce.right === undefined ? true : bounce.right;
      }
      if (newX > this.minScrollX || newX < this.maxScrollX) {
        if (newX > this.minScrollX && left || newX < this.maxScrollX && right) {
          newX = this.x + deltaX / 3;
        } else {
          newX = newX > this.minScrollX ? this.minScrollX : this.maxScrollX;
        }
      }
      if (newY > this.minScrollY || newY < this.maxScrollY) {
        if (newY > this.minScrollY && top || newY < this.maxScrollY && bottom) {
          newY = this.y + deltaY / 3;
        } else {
          newY = newY > this.minScrollY ? this.minScrollY : this.maxScrollY;
        }
      }
  
      if (!this.moved) {
        this.moved = true;
        this.trigger('scrollStart');
      }
  
      this._translate(newX, newY);
  
      if (timestamp - this.startTime > this.options.momentumLimitTime) {
        this.startTime = timestamp;
        this.startX = this.x;
        this.startY = this.y;
  
        if (this.options.probeType === PROBE_DEBOUNCE) {
          this.trigger('scroll', {
            x: this.x,
            y: this.y
          });
        }
      }
  
      if (this.options.probeType > PROBE_DEBOUNCE) {
        this.trigger('scroll', {
          x: this.x,
          y: this.y
        });
      }
  
      var scrollLeft = document.documentElement.scrollLeft || window.pageXOffset || document.body.scrollLeft;
      var scrollTop = document.documentElement.scrollTop || window.pageYOffset || document.body.scrollTop;
  
      var pX = this.pointX - scrollLeft;
      var pY = this.pointY - scrollTop;
  
      if (pX > document.documentElement.clientWidth - this.options.momentumLimitDistance || pX < this.options.momentumLimitDistance || pY < this.options.momentumLimitDistance || pY > document.documentElement.clientHeight - this.options.momentumLimitDistance) {
        this._end(e);
      }
    };
  
    BScroll.prototype._end = function (e) {
      if (!this.enabled || this.destroyed || eventType[e.type] !== this.initiated) {
        return;
      }
      this.initiated = false;
  
      if (this.options.preventDefault && !preventDefaultException(e.target, this.options.preventDefaultException)) {
        e.preventDefault();
      }
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      this.trigger('touchEnd', {
        x: this.x,
        y: this.y
      });
  
      this.isInTransition = false;
  
      // ensures that the last position is rounded
      var newX = Math.round(this.x);
      var newY = Math.round(this.y);
  
      var deltaX = newX - this.absStartX;
      var deltaY = newY - this.absStartY;
      this.directionX = deltaX > 0 ? DIRECTION_RIGHT : deltaX < 0 ? DIRECTION_LEFT : 0;
      this.directionY = deltaY > 0 ? DIRECTION_DOWN : deltaY < 0 ? DIRECTION_UP : 0;
  
      // if configure pull down refresh, check it first
      if (this.options.pullDownRefresh && this._checkPullDown()) {
        return;
      }
  
      // check if it is a click operation
      if (this._checkClick(e)) {
        this.trigger('scrollCancel');
        return;
      }
  
      // reset if we are outside of the boundaries
      if (this.resetPosition(this.options.bounceTime, ease.bounce)) {
        return;
      }
  
      this._translate(newX, newY);
  
      this.endTime = getNow();
      var duration = this.endTime - this.startTime;
      var absDistX = Math.abs(newX - this.startX);
      var absDistY = Math.abs(newY - this.startY);
  
      // flick
      if (this._events.flick && duration < this.options.flickLimitTime && absDistX < this.options.flickLimitDistance && absDistY < this.options.flickLimitDistance) {
        this.trigger('flick');
        return;
      }
  
      var time = 0;
      // start momentum animation if needed
      if (this.options.momentum && duration < this.options.momentumLimitTime && (absDistY > this.options.momentumLimitDistance || absDistX > this.options.momentumLimitDistance)) {
        var top = false;
        var bottom = false;
        var left = false;
        var right = false;
        var bounce = this.options.bounce;
        if (bounce !== false) {
          top = bounce.top === undefined ? true : bounce.top;
          bottom = bounce.bottom === undefined ? true : bounce.bottom;
          left = bounce.left === undefined ? true : bounce.left;
          right = bounce.right === undefined ? true : bounce.right;
        }
        var wrapperWidth = this.directionX === DIRECTION_RIGHT && left || this.directionX === DIRECTION_LEFT && right ? this.wrapperWidth : 0;
        var wrapperHeight = this.directionY === DIRECTION_DOWN && top || this.directionY === DIRECTION_UP && bottom ? this.wrapperHeight : 0;
        var momentumX = this.hasHorizontalScroll ? momentum(this.x, this.startX, duration, this.maxScrollX, this.minScrollX, wrapperWidth, this.options) : { destination: newX, duration: 0 };
        var momentumY = this.hasVerticalScroll ? momentum(this.y, this.startY, duration, this.maxScrollY, this.minScrollY, wrapperHeight, this.options) : { destination: newY, duration: 0 };
        newX = momentumX.destination;
        newY = momentumY.destination;
        time = Math.max(momentumX.duration, momentumY.duration);
        this.isInTransition = true;
      } else {
        if (this.options.wheel) {
          newY = Math.round(newY / this.itemHeight) * this.itemHeight;
          time = this.options.wheel.adjustTime || 400;
        }
      }
  
      var easing = ease.swipe;
      if (this.options.snap) {
        var snap = this._nearestSnap(newX, newY);
        this.currentPage = snap;
        time = this.options.snapSpeed || Math.max(Math.max(Math.min(Math.abs(newX - snap.x), 1000), Math.min(Math.abs(newY - snap.y), 1000)), 300);
        newX = snap.x;
        newY = snap.y;
  
        this.directionX = 0;
        this.directionY = 0;
        easing = this.options.snap.easing || ease.bounce;
      }
  
      if (newX !== this.x || newY !== this.y) {
        // change easing function when scroller goes out of the boundaries
        if (newX > this.minScrollX || newX < this.maxScrollX || newY > this.minScrollY || newY < this.maxScrollY) {
          easing = ease.swipeBounce;
        }
        this.scrollTo(newX, newY, time, easing);
        return;
      }
  
      if (this.options.wheel) {
        this.selectedIndex = Math.round(Math.abs(this.y / this.itemHeight));
      }
      this.trigger('scrollEnd', {
        x: this.x,
        y: this.y
      });
    };
  
    BScroll.prototype._checkClick = function (e) {
      // when in the process of pulling down, it should not prevent click
      var preventClick = this.stopFromTransition && !this.pulling;
      this.stopFromTransition = false;
  
      // we scrolled less than 15 pixels
      if (!this.moved) {
        if (this.options.wheel) {
          if (this.target && this.target.classList.contains(this.options.wheel.wheelWrapperClass)) {
            var index = Math.abs(Math.round(this.y / this.itemHeight));
            var _offset = Math.round((this.pointY + offsetToBody(this.wrapper).top - this.wrapperHeight / 2) / this.itemHeight);
            this.target = this.items[index + _offset];
          }
          this.scrollToElement(this.target, this.options.wheel.adjustTime || 400, true, true, ease.swipe);
          return true;
        } else {
          if (!preventClick) {
            var _dblclick = this.options.dblclick;
            var dblclickTrigged = false;
            if (_dblclick && this.lastClickTime) {
              var _dblclick$delay = _dblclick.delay,
                  delay = _dblclick$delay === undefined ? 300 : _dblclick$delay;
  
              if (getNow() - this.lastClickTime < delay) {
                dblclickTrigged = true;
                dblclick(e);
              }
            }
            if (this.options.tap) {
              tap(e, this.options.tap);
            }
  
            if (this.options.click && !preventDefaultException(e.target, this.options.preventDefaultException)) {
              click(e);
            }
            this.lastClickTime = dblclickTrigged ? null : getNow();
            return true;
          }
          return false;
        }
      }
      return false;
    };
  
    BScroll.prototype._resize = function () {
      var _this = this;
  
      if (!this.enabled) {
        return;
      }
      // fix a scroll problem under Android condition
      if (isAndroid) {
        this.wrapper.scrollTop = 0;
      }
      clearTimeout(this.resizeTimeout);
      this.resizeTimeout = setTimeout(function () {
        _this.refresh();
      }, this.options.resizePolling);
    };
  
    BScroll.prototype._startProbe = function () {
      cancelAnimationFrame(this.probeTimer);
      this.probeTimer = requestAnimationFrame(probe);
  
      var me = this;
  
      function probe() {
        var pos = me.getComputedPosition();
        me.trigger('scroll', pos);
        if (!me.isInTransition) {
          me.trigger('scrollEnd', pos);
          return;
        }
        me.probeTimer = requestAnimationFrame(probe);
      }
    };
  
    BScroll.prototype._transitionTime = function () {
      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
  
      this.scrollerStyle[style.transitionDuration] = time + 'ms';
  
      if (this.options.wheel) {
        for (var i = 0; i < this.items.length; i++) {
          this.items[i].style[style.transitionDuration] = time + 'ms';
        }
      }
  
      if (this.indicators) {
        for (var _i = 0; _i < this.indicators.length; _i++) {
          this.indicators[_i].transitionTime(time);
        }
      }
    };
  
    BScroll.prototype._transitionTimingFunction = function (easing) {
      this.scrollerStyle[style.transitionTimingFunction] = easing;
  
      if (this.options.wheel) {
        for (var i = 0; i < this.items.length; i++) {
          this.items[i].style[style.transitionTimingFunction] = easing;
        }
      }
  
      if (this.indicators) {
        for (var _i2 = 0; _i2 < this.indicators.length; _i2++) {
          this.indicators[_i2].transitionTimingFunction(easing);
        }
      }
    };
  
    BScroll.prototype._transitionEnd = function (e) {
      if (e.target !== this.scroller || !this.isInTransition) {
        return;
      }
  
      this._transitionTime();
      var needReset = !this.pulling || this.movingDirectionY === DIRECTION_UP;
      if (needReset && !this.resetPosition(this.options.bounceTime, ease.bounce)) {
        this.isInTransition = false;
        if (this.options.probeType !== PROBE_REALTIME) {
          this.trigger('scrollEnd', {
            x: this.x,
            y: this.y
          });
        }
      }
    };
  
    BScroll.prototype._translate = function (x, y, scale) {
      assert(!isUndef(x) && !isUndef(y), 'Translate x or y is null or undefined.');
      if (isUndef(scale)) {
        scale = this.scale;
      }
      if (this.options.useTransform) {
        this.scrollerStyle[style.transform] = 'translate(' + x + 'px,' + y + 'px) scale(' + scale + ')' + this.translateZ;
      } else {
        x = Math.round(x);
        y = Math.round(y);
        this.scrollerStyle.left = x + 'px';
        this.scrollerStyle.top = y + 'px';
      }
  
      if (this.options.wheel) {
        var _options$wheel$rotate = this.options.wheel.rotate,
            rotate = _options$wheel$rotate === undefined ? 25 : _options$wheel$rotate;
  
        for (var i = 0; i < this.items.length; i++) {
          var deg = rotate * (y / this.itemHeight + i);
          this.items[i].style[style.transform] = 'rotateX(' + deg + 'deg)';
        }
      }
  
      this.x = x;
      this.y = y;
      this.setScale(scale);
  
      if (this.indicators) {
        for (var _i3 = 0; _i3 < this.indicators.length; _i3++) {
          this.indicators[_i3].updatePosition();
        }
      }
    };
  
    BScroll.prototype._animate = function (destX, destY, duration, easingFn) {
      var me = this;
      var startX = this.x;
      var startY = this.y;
      var startScale = this.lastScale;
      var destScale = this.scale;
      var startTime = getNow();
      var destTime = startTime + duration;
  
      function step() {
        var now = getNow();
  
        if (now >= destTime) {
          me.isAnimating = false;
          me._translate(destX, destY, destScale);
  
          me.trigger('scroll', {
            x: me.x,
            y: me.y
          });
  
          if (!me.pulling && !me.resetPosition(me.options.bounceTime)) {
            me.trigger('scrollEnd', {
              x: me.x,
              y: me.y
            });
          }
          return;
        }
        now = (now - startTime) / duration;
        var easing = easingFn(now);
        var newX = (destX - startX) * easing + startX;
        var newY = (destY - startY) * easing + startY;
        var newScale = (destScale - startScale) * easing + startScale;
  
        me._translate(newX, newY, newScale);
  
        if (me.isAnimating) {
          me.animateTimer = requestAnimationFrame(step);
        }
  
        if (me.options.probeType === PROBE_REALTIME) {
          me.trigger('scroll', {
            x: me.x,
            y: me.y
          });
        }
      }
  
      this.isAnimating = true;
      cancelAnimationFrame(this.animateTimer);
      step();
    };
  
    BScroll.prototype.scrollBy = function (x, y) {
      var time = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
      var easing = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : ease.bounce;
  
      x = this.x + x;
      y = this.y + y;
  
      this.scrollTo(x, y, time, easing);
    };
  
    BScroll.prototype.scrollTo = function (x, y) {
      var time = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
      var easing = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : ease.bounce;
  
      this.isInTransition = this.options.useTransition && time > 0 && (x !== this.x || y !== this.y);
  
      if (!time || this.options.useTransition) {
        this._transitionTimingFunction(easing.style);
        this._transitionTime(time);
        this._translate(x, y);
  
        if (time && this.options.probeType === PROBE_REALTIME) {
          this._startProbe();
        }
  
        if (!time && (x !== this.x || y !== this.y)) {
          this.trigger('scroll', {
            x: x,
            y: y
          });
          // force reflow to put everything in position
          this._reflow = document.body.offsetHeight;
          if (!this.resetPosition(this.options.bounceTime, ease.bounce)) {
            this.trigger('scrollEnd', {
              x: x,
              y: y
            });
          }
        }
  
        if (this.options.wheel) {
          if (y > this.minScrollY) {
            this.selectedIndex = 0;
          } else if (y < this.maxScrollY) {
            this.selectedIndex = this.items.length - 1;
          } else {
            this.selectedIndex = Math.round(Math.abs(y / this.itemHeight));
          }
        }
      } else {
        this._animate(x, y, time, easing.fn);
      }
    };
  
    BScroll.prototype.scrollToElement = function (el, time, offsetX, offsetY, easing) {
      if (!el) {
        return;
      }
      el = el.nodeType ? el : this.scroller.querySelector(el);
  
      if (this.options.wheel && !el.classList.contains(this.options.wheel.wheelItemClass)) {
        return;
      }
  
      var pos = offset(el);
      pos.left -= this.wrapperOffset.left;
      pos.top -= this.wrapperOffset.top;
  
      // if offsetX/Y are true we center the element to the screen
      if (offsetX === true) {
        offsetX = Math.round(el.offsetWidth / 2 - this.wrapper.offsetWidth / 2);
      }
      if (offsetY === true) {
        offsetY = Math.round(el.offsetHeight / 2 - this.wrapper.offsetHeight / 2);
      }
  
      pos.left -= offsetX || 0;
      pos.top -= offsetY || 0;
      pos.left = pos.left > this.minScrollX ? this.minScrollX : pos.left < this.maxScrollX ? this.maxScrollX : pos.left;
      pos.top = pos.top > this.minScrollY ? this.minScrollY : pos.top < this.maxScrollY ? this.maxScrollY : pos.top;
  
      if (this.options.wheel) {
        pos.top = Math.round(pos.top / this.itemHeight) * this.itemHeight;
      }
  
      this.scrollTo(pos.left, pos.top, time, easing);
    };
  
    BScroll.prototype.resetPosition = function () {
      var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
      var easeing = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ease.bounce;
  
      var x = this.x;
      var roundX = Math.round(x);
      if (!this.hasHorizontalScroll || roundX > this.minScrollX) {
        x = this.minScrollX;
      } else if (roundX < this.maxScrollX) {
        x = this.maxScrollX;
      }
  
      var y = this.y;
      var roundY = Math.round(y);
      if (!this.hasVerticalScroll || roundY > this.minScrollY) {
        y = this.minScrollY;
      } else if (roundY < this.maxScrollY) {
        y = this.maxScrollY;
      }
  
      if (x === this.x && y === this.y) {
        return false;
      }
  
      this.scrollTo(x, y, time, easeing);
  
      return true;
    };
  
    BScroll.prototype.getComputedPosition = function () {
      var matrix = window.getComputedStyle(this.scroller, null);
      var x = void 0;
      var y = void 0;
  
      if (this.options.useTransform) {
        matrix = matrix[style.transform].split(')')[0].split(', ');
        x = +(matrix[12] || matrix[4]);
        y = +(matrix[13] || matrix[5]);
      } else {
        x = +matrix.left.replace(/[^-\d.]/g, '');
        y = +matrix.top.replace(/[^-\d.]/g, '');
      }
  
      return {
        x: x,
        y: y
      };
    };
  
    BScroll.prototype.stop = function () {
      if (this.options.useTransition && this.isInTransition) {
        this.isInTransition = false;
        cancelAnimationFrame(this.probeTimer);
        var pos = this.getComputedPosition();
        this._translate(pos.x, pos.y);
        if (this.options.wheel) {
          this.target = this.items[Math.round(-pos.y / this.itemHeight)];
        } else {
          this.trigger('scrollEnd', {
            x: this.x,
            y: this.y
          });
        }
        this.stopFromTransition = true;
      } else if (!this.options.useTransition && this.isAnimating) {
        this.isAnimating = false;
        cancelAnimationFrame(this.animateTimer);
        this.trigger('scrollEnd', {
          x: this.x,
          y: this.y
        });
        this.stopFromTransition = true;
      }
    };
  
    BScroll.prototype.destroy = function () {
      this.destroyed = true;
      this.trigger('destroy');
      if (this.options.useTransition) {
        cancelAnimationFrame(this.probeTimer);
      } else {
        cancelAnimationFrame(this.animateTimer);
      }
      this._removeDOMEvents();
      // remove custom events
      this._events = {};
    };
  }
  
  function snapMixin(BScroll) {
    BScroll.prototype._initSnap = function () {
      var _this = this;
  
      this.currentPage = {};
      var snap = this.options.snap;
  
      if (snap.loop) {
        var children = this.scroller.children;
        if (children.length > 1) {
          prepend(children[children.length - 1].cloneNode(true), this.scroller);
          this.scroller.appendChild(children[1].cloneNode(true));
        } else {
          // Loop does not make any sense if there is only one child.
          snap.loop = false;
        }
      }
  
      var el = snap.el;
      if (typeof el === 'string') {
        el = this.scroller.querySelectorAll(el);
      }
  
      this.on('refresh', function () {
        _this.pages = [];
  
        if (!_this.wrapperWidth || !_this.wrapperHeight || !_this.scrollerWidth || !_this.scrollerHeight) {
          return;
        }
  
        var stepX = snap.stepX || _this.wrapperWidth;
        var stepY = snap.stepY || _this.wrapperHeight;
  
        var x = 0;
        var y = void 0;
        var cx = void 0;
        var cy = void 0;
        var i = 0;
        var l = void 0;
        var m = 0;
        var n = void 0;
        var rect = void 0;
        if (!el) {
          cx = Math.round(stepX / 2);
          cy = Math.round(stepY / 2);
  
          while (x > -_this.scrollerWidth) {
            _this.pages[i] = [];
            l = 0;
            y = 0;
  
            while (y > -_this.scrollerHeight) {
              _this.pages[i][l] = {
                x: Math.max(x, _this.maxScrollX),
                y: Math.max(y, _this.maxScrollY),
                width: stepX,
                height: stepY,
                cx: x - cx,
                cy: y - cy
              };
  
              y -= stepY;
              l++;
            }
  
            x -= stepX;
            i++;
          }
        } else {
          l = el.length;
          n = -1;
  
          for (; i < l; i++) {
            rect = getRect(el[i]);
            if (i === 0 || rect.left <= getRect(el[i - 1]).left) {
              m = 0;
              n++;
            }
  
            if (!_this.pages[m]) {
              _this.pages[m] = [];
            }
  
            x = Math.max(-rect.left, _this.maxScrollX);
            y = Math.max(-rect.top, _this.maxScrollY);
            cx = x - Math.round(rect.width / 2);
            cy = y - Math.round(rect.height / 2);
  
            _this.pages[m][n] = {
              x: x,
              y: y,
              width: rect.width,
              height: rect.height,
              cx: cx,
              cy: cy
            };
  
            if (x > _this.maxScrollX) {
              m++;
            }
          }
        }
  
        _this._checkSnapLoop();
  
        var initPageX = snap._loopX ? 1 : 0;
        var initPageY = snap._loopY ? 1 : 0;
        _this._goToPage(_this.currentPage.pageX || initPageX, _this.currentPage.pageY || initPageY, 0);
  
        // Update snap threshold if needed.
        var snapThreshold = snap.threshold;
        if (snapThreshold % 1 === 0) {
          _this.snapThresholdX = snapThreshold;
          _this.snapThresholdY = snapThreshold;
        } else {
          _this.snapThresholdX = Math.round(_this.pages[_this.currentPage.pageX][_this.currentPage.pageY].width * snapThreshold);
          _this.snapThresholdY = Math.round(_this.pages[_this.currentPage.pageX][_this.currentPage.pageY].height * snapThreshold);
        }
      });
  
      this.on('scrollEnd', function () {
        if (snap.loop) {
          if (snap._loopX) {
            if (_this.currentPage.pageX === 0) {
              _this._goToPage(_this.pages.length - 2, _this.currentPage.pageY, 0);
            }
            if (_this.currentPage.pageX === _this.pages.length - 1) {
              _this._goToPage(1, _this.currentPage.pageY, 0);
            }
          } else {
            if (_this.currentPage.pageY === 0) {
              _this._goToPage(_this.currentPage.pageX, _this.pages[0].length - 2, 0);
            }
            if (_this.currentPage.pageY === _this.pages[0].length - 1) {
              _this._goToPage(_this.currentPage.pageX, 1, 0);
            }
          }
        }
      });
  
      if (snap.listenFlick !== false) {
        this.on('flick', function () {
          var time = snap.speed || Math.max(Math.max(Math.min(Math.abs(_this.x - _this.startX), 1000), Math.min(Math.abs(_this.y - _this.startY), 1000)), 300);
  
          _this._goToPage(_this.currentPage.pageX + _this.directionX, _this.currentPage.pageY + _this.directionY, time);
        });
      }
  
      this.on('destroy', function () {
        if (snap.loop) {
          var _children = _this.scroller.children;
          if (_children.length > 2) {
            removeChild(_this.scroller, _children[_children.length - 1]);
            removeChild(_this.scroller, _children[0]);
          }
        }
      });
    };
  
    BScroll.prototype._checkSnapLoop = function () {
      var snap = this.options.snap;
  
      if (!snap.loop || !this.pages || !this.pages.length) {
        return;
      }
  
      if (this.pages.length > 1) {
        snap._loopX = true;
      }
      if (this.pages[0] && this.pages[0].length > 1) {
        snap._loopY = true;
      }
      if (snap._loopX && snap._loopY) {
        warn('Loop does not support two direction at the same time.');
      }
    };
  
    BScroll.prototype._nearestSnap = function (x, y) {
      if (!this.pages.length) {
        return { x: 0, y: 0, pageX: 0, pageY: 0 };
      }
  
      var i = 0;
      // Check if we exceeded the snap threshold
      if (Math.abs(x - this.absStartX) <= this.snapThresholdX && Math.abs(y - this.absStartY) <= this.snapThresholdY) {
        return this.currentPage;
      }
  
      if (x > this.minScrollX) {
        x = this.minScrollX;
      } else if (x < this.maxScrollX) {
        x = this.maxScrollX;
      }
  
      if (y > this.minScrollY) {
        y = this.minScrollY;
      } else if (y < this.maxScrollY) {
        y = this.maxScrollY;
      }
  
      var l = this.pages.length;
      for (; i < l; i++) {
        if (x >= this.pages[i][0].cx) {
          x = this.pages[i][0].x;
          break;
        }
      }
  
      l = this.pages[i].length;
  
      var m = 0;
      for (; m < l; m++) {
        if (y >= this.pages[0][m].cy) {
          y = this.pages[0][m].y;
          break;
        }
      }
  
      if (i === this.currentPage.pageX) {
        i += this.directionX;
  
        if (i < 0) {
          i = 0;
        } else if (i >= this.pages.length) {
          i = this.pages.length - 1;
        }
  
        x = this.pages[i][0].x;
      }
  
      if (m === this.currentPage.pageY) {
        m += this.directionY;
  
        if (m < 0) {
          m = 0;
        } else if (m >= this.pages[0].length) {
          m = this.pages[0].length - 1;
        }
  
        y = this.pages[0][m].y;
      }
  
      return {
        x: x,
        y: y,
        pageX: i,
        pageY: m
      };
    };
  
    BScroll.prototype._goToPage = function (x) {
      var y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
      var time = arguments[2];
      var easing = arguments[3];
  
      var snap = this.options.snap;
  
      if (!snap || !this.pages || !this.pages.length) {
        return;
      }
  
      easing = easing || snap.easing || ease.bounce;
  
      if (x >= this.pages.length) {
        x = this.pages.length - 1;
      } else if (x < 0) {
        x = 0;
      }
  
      if (!this.pages[x]) {
        return;
      }
  
      if (y >= this.pages[x].length) {
        y = this.pages[x].length - 1;
      } else if (y < 0) {
        y = 0;
      }
  
      var posX = this.pages[x][y].x;
      var posY = this.pages[x][y].y;
  
      time = time === undefined ? snap.speed || Math.max(Math.max(Math.min(Math.abs(posX - this.x), 1000), Math.min(Math.abs(posY - this.y), 1000)), 300) : time;
  
      this.currentPage = {
        x: posX,
        y: posY,
        pageX: x,
        pageY: y
      };
      this.scrollTo(posX, posY, time, easing);
    };
  
    BScroll.prototype.goToPage = function (x, y, time, easing) {
      var snap = this.options.snap;
      if (!snap || !this.pages || !this.pages.length) {
        return;
      }
  
      if (snap.loop) {
        var len = void 0;
        if (snap._loopX) {
          len = this.pages.length - 2;
          if (x >= len) {
            x = len - 1;
          } else if (x < 0) {
            x = 0;
          }
          x += 1;
        } else {
          len = this.pages[0].length - 2;
          if (y >= len) {
            y = len - 1;
          } else if (y < 0) {
            y = 0;
          }
          y += 1;
        }
      }
      this._goToPage(x, y, time, easing);
    };
  
    BScroll.prototype.next = function (time, easing) {
      var snap = this.options.snap;
      if (!snap) {
        return;
      }
  
      var x = this.currentPage.pageX;
      var y = this.currentPage.pageY;
  
      x++;
      if (x >= this.pages.length && this.hasVerticalScroll) {
        x = 0;
        y++;
      }
  
      this._goToPage(x, y, time, easing);
    };
  
    BScroll.prototype.prev = function (time, easing) {
      var snap = this.options.snap;
      if (!snap) {
        return;
      }
  
      var x = this.currentPage.pageX;
      var y = this.currentPage.pageY;
  
      x--;
      if (x < 0 && this.hasVerticalScroll) {
        x = 0;
        y--;
      }
  
      this._goToPage(x, y, time, easing);
    };
  
    BScroll.prototype.getCurrentPage = function () {
      var snap = this.options.snap;
      if (!snap) {
        return null;
      }
  
      if (snap.loop) {
        var currentPage = void 0;
        if (snap._loopX) {
          currentPage = extend({}, this.currentPage, {
            pageX: this.currentPage.pageX - 1
          });
        } else {
          currentPage = extend({}, this.currentPage, {
            pageY: this.currentPage.pageY - 1
          });
        }
        return currentPage;
      }
      return this.currentPage;
    };
  }
  
  function wheelMixin(BScroll) {
    BScroll.prototype.wheelTo = function () {
      var index = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
  
      if (this.options.wheel) {
        this.y = -index * this.itemHeight;
        this.scrollTo(0, this.y);
      }
    };
  
    BScroll.prototype.getSelectedIndex = function () {
      return this.options.wheel && this.selectedIndex;
    };
  
    BScroll.prototype._initWheel = function () {
      var wheel = this.options.wheel;
      if (!wheel.wheelWrapperClass) {
        wheel.wheelWrapperClass = 'wheel-scroll';
      }
      if (!wheel.wheelItemClass) {
        wheel.wheelItemClass = 'wheel-item';
      }
      if (wheel.selectedIndex === undefined) {
        wheel.selectedIndex = 0;
        warn('wheel option selectedIndex is required!');
      }
    };
  }
  
  var INDICATOR_MIN_LEN = 8;
  
  function scrollbarMixin(BScroll) {
    BScroll.prototype._initScrollbar = function () {
      var _this = this;
  
      var _options$scrollbar = this.options.scrollbar,
          _options$scrollbar$fa = _options$scrollbar.fade,
          fade = _options$scrollbar$fa === undefined ? true : _options$scrollbar$fa,
          _options$scrollbar$in = _options$scrollbar.interactive,
          interactive = _options$scrollbar$in === undefined ? false : _options$scrollbar$in;
  
      this.indicators = [];
      var indicator = void 0;
  
      if (this.options.scrollX) {
        indicator = {
          el: createScrollbar('horizontal'),
          direction: 'horizontal',
          fade: fade,
          interactive: interactive
        };
        this._insertScrollBar(indicator.el);
  
        this.indicators.push(new Indicator(this, indicator));
      }
  
      if (this.options.scrollY) {
        indicator = {
          el: createScrollbar('vertical'),
          direction: 'vertical',
          fade: fade,
          interactive: interactive
        };
        this._insertScrollBar(indicator.el);
        this.indicators.push(new Indicator(this, indicator));
      }
  
      this.on('refresh', function () {
        for (var i = 0; i < _this.indicators.length; i++) {
          _this.indicators[i].refresh();
        }
      });
  
      if (fade) {
        this.on('scrollEnd', function () {
          for (var i = 0; i < _this.indicators.length; i++) {
            _this.indicators[i].fade();
          }
        });
  
        this.on('scrollCancel', function () {
          for (var i = 0; i < _this.indicators.length; i++) {
            _this.indicators[i].fade();
          }
        });
  
        this.on('scrollStart', function () {
          for (var i = 0; i < _this.indicators.length; i++) {
            _this.indicators[i].fade(true);
          }
        });
  
        this.on('beforeScrollStart', function () {
          for (var i = 0; i < _this.indicators.length; i++) {
            _this.indicators[i].fade(true, true);
          }
        });
      }
  
      this.on('destroy', function () {
        _this._removeScrollBars();
      });
    };
  
    BScroll.prototype._insertScrollBar = function (scrollbar) {
      this.wrapper.appendChild(scrollbar);
    };
  
    BScroll.prototype._removeScrollBars = function () {
      for (var i = 0; i < this.indicators.length; i++) {
        this.indicators[i].destroy();
      }
    };
  }
  
  function createScrollbar(direction) {
    var scrollbar = document.createElement('div');
    var indicator = document.createElement('div');
  
    scrollbar.style.cssText = 'position:absolute;z-index:9999;pointerEvents:none';
    indicator.style.cssText = 'box-sizing:border-box;position:absolute;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);border-radius:3px;';
  
    indicator.className = 'bscroll-indicator';
  
    if (direction === 'horizontal') {
      scrollbar.style.cssText += ';height:7px;left:2px;right:2px;bottom:0';
      indicator.style.height = '100%';
      scrollbar.className = 'bscroll-horizontal-scrollbar';
    } else {
      scrollbar.style.cssText += ';width:7px;bottom:2px;top:2px;right:1px';
      indicator.style.width = '100%';
      scrollbar.className = 'bscroll-vertical-scrollbar';
    }
  
    scrollbar.style.cssText += ';overflow:hidden';
    scrollbar.appendChild(indicator);
  
    return scrollbar;
  }
  
  function Indicator(scroller, options) {
    this.wrapper = options.el;
    this.wrapperStyle = this.wrapper.style;
    this.indicator = this.wrapper.children[0];
    this.indicatorStyle = this.indicator.style;
    this.scroller = scroller;
    this.direction = options.direction;
    if (options.fade) {
      this.visible = 0;
      this.wrapperStyle.opacity = '0';
    } else {
      this.visible = 1;
    }
  
    this.sizeRatioX = 1;
    this.sizeRatioY = 1;
    this.maxPosX = 0;
    this.maxPosY = 0;
    this.x = 0;
    this.y = 0;
  
    if (options.interactive) {
      this._addDOMEvents();
    }
  }
  
  Indicator.prototype.handleEvent = function (e) {
    switch (e.type) {
      case 'touchstart':
      case 'mousedown':
        this._start(e);
        break;
      case 'touchmove':
      case 'mousemove':
        this._move(e);
        break;
      case 'touchend':
      case 'mouseup':
      case 'touchcancel':
      case 'mousecancel':
        this._end(e);
        break;
    }
  };
  
  Indicator.prototype.refresh = function () {
    if (this._shouldShow()) {
      this.transitionTime();
      this._calculate();
      this.updatePosition();
    }
  };
  
  Indicator.prototype.fade = function (visible, hold) {
    var _this2 = this;
  
    if (hold && !this.visible) {
      return;
    }
  
    var time = visible ? 250 : 500;
  
    visible = visible ? '1' : '0';
  
    this.wrapperStyle[style.transitionDuration] = time + 'ms';
  
    clearTimeout(this.fadeTimeout);
    this.fadeTimeout = setTimeout(function () {
      _this2.wrapperStyle.opacity = visible;
      _this2.visible = +visible;
    }, 0);
  };
  
  Indicator.prototype.updatePosition = function () {
    if (this.direction === 'vertical') {
      var y = Math.round(this.sizeRatioY * this.scroller.y);
  
      if (y < 0) {
        this.transitionTime(500);
        var height = Math.max(this.indicatorHeight + y * 3, INDICATOR_MIN_LEN);
        this.indicatorStyle.height = height + 'px';
        y = 0;
      } else if (y > this.maxPosY) {
        this.transitionTime(500);
        var _height = Math.max(this.indicatorHeight - (y - this.maxPosY) * 3, INDICATOR_MIN_LEN);
        this.indicatorStyle.height = _height + 'px';
        y = this.maxPosY + this.indicatorHeight - _height;
      } else {
        this.indicatorStyle.height = this.indicatorHeight + 'px';
      }
      this.y = y;
  
      if (this.scroller.options.useTransform) {
        this.indicatorStyle[style.transform] = 'translateY(' + y + 'px)' + this.scroller.translateZ;
      } else {
        this.indicatorStyle.top = y + 'px';
      }
    } else {
      var x = Math.round(this.sizeRatioX * this.scroller.x);
  
      if (x < 0) {
        this.transitionTime(500);
        var width = Math.max(this.indicatorWidth + x * 3, INDICATOR_MIN_LEN);
        this.indicatorStyle.width = width + 'px';
        x = 0;
      } else if (x > this.maxPosX) {
        this.transitionTime(500);
        var _width = Math.max(this.indicatorWidth - (x - this.maxPosX) * 3, INDICATOR_MIN_LEN);
        this.indicatorStyle.width = _width + 'px';
        x = this.maxPosX + this.indicatorWidth - _width;
      } else {
        this.indicatorStyle.width = this.indicatorWidth + 'px';
      }
  
      this.x = x;
  
      if (this.scroller.options.useTransform) {
        this.indicatorStyle[style.transform] = 'translateX(' + x + 'px)' + this.scroller.translateZ;
      } else {
        this.indicatorStyle.left = x + 'px';
      }
    }
  };
  
  Indicator.prototype.transitionTime = function () {
    var time = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
  
    this.indicatorStyle[style.transitionDuration] = time + 'ms';
  };
  
  Indicator.prototype.transitionTimingFunction = function (easing) {
    this.indicatorStyle[style.transitionTimingFunction] = easing;
  };
  
  Indicator.prototype.destroy = function () {
    this._removeDOMEvents();
    this.wrapper.parentNode.removeChild(this.wrapper);
  };
  
  Indicator.prototype._start = function (e) {
    var point = e.touches ? e.touches[0] : e;
  
    e.preventDefault();
    e.stopPropagation();
  
    this.transitionTime();
  
    this.initiated = true;
    this.moved = false;
    this.lastPointX = point.pageX;
    this.lastPointY = point.pageY;
  
    this.startTime = getNow();
  
    this._handleMoveEvents(addEvent);
    this.scroller.trigger('beforeScrollStart');
  };
  
  Indicator.prototype._move = function (e) {
    var point = e.touches ? e.touches[0] : e;
  
    e.preventDefault();
    e.stopPropagation();
  
    if (!this.moved) {
      this.scroller.trigger('scrollStart');
    }
  
    this.moved = true;
  
    var deltaX = point.pageX - this.lastPointX;
    this.lastPointX = point.pageX;
  
    var deltaY = point.pageY - this.lastPointY;
    this.lastPointY = point.pageY;
  
    var newX = this.x + deltaX;
    var newY = this.y + deltaY;
  
    this._pos(newX, newY);
  };
  
  Indicator.prototype._end = function (e) {
    if (!this.initiated) {
      return;
    }
    this.initiated = false;
  
    e.preventDefault();
    e.stopPropagation();
  
    this._handleMoveEvents(removeEvent);
  
    var snapOption = this.scroller.options.snap;
    if (snapOption) {
      var speed = snapOption.speed,
          _snapOption$easing = snapOption.easing,
          easing = _snapOption$easing === undefined ? ease.bounce : _snapOption$easing;
  
      var snap = this.scroller._nearestSnap(this.scroller.x, this.scroller.y);
  
      var time = speed || Math.max(Math.max(Math.min(Math.abs(this.scroller.x - snap.x), 1000), Math.min(Math.abs(this.scroller.y - snap.y), 1000)), 300);
  
      if (this.scroller.x !== snap.x || this.scroller.y !== snap.y) {
        this.scroller.directionX = 0;
        this.scroller.directionY = 0;
        this.scroller.currentPage = snap;
        this.scroller.scrollTo(snap.x, snap.y, time, easing);
      }
    }
  
    if (this.moved) {
      this.scroller.trigger('scrollEnd', {
        x: this.scroller.x,
        y: this.scroller.y
      });
    }
  };
  
  Indicator.prototype._pos = function (x, y) {
    if (x < 0) {
      x = 0;
    } else if (x > this.maxPosX) {
      x = this.maxPosX;
    }
  
    if (y < 0) {
      y = 0;
    } else if (y > this.maxPosY) {
      y = this.maxPosY;
    }
  
    x = Math.round(x / this.sizeRatioX);
    y = Math.round(y / this.sizeRatioY);
  
    this.scroller.scrollTo(x, y);
    this.scroller.trigger('scroll', {
      x: this.scroller.x,
      y: this.scroller.y
    });
  };
  
  Indicator.prototype._shouldShow = function () {
    if (this.direction === 'vertical' && this.scroller.hasVerticalScroll || this.direction === 'horizontal' && this.scroller.hasHorizontalScroll) {
      this.wrapper.style.display = '';
      return true;
    }
    this.wrapper.style.display = 'none';
    return false;
  };
  
  Indicator.prototype._calculate = function () {
    if (this.direction === 'vertical') {
      var wrapperHeight = this.wrapper.clientHeight;
      this.indicatorHeight = Math.max(Math.round(wrapperHeight * wrapperHeight / (this.scroller.scrollerHeight || wrapperHeight || 1)), INDICATOR_MIN_LEN);
      this.indicatorStyle.height = this.indicatorHeight + 'px';
  
      this.maxPosY = wrapperHeight - this.indicatorHeight;
  
      this.sizeRatioY = this.maxPosY / this.scroller.maxScrollY;
    } else {
      var wrapperWidth = this.wrapper.clientWidth;
      this.indicatorWidth = Math.max(Math.round(wrapperWidth * wrapperWidth / (this.scroller.scrollerWidth || wrapperWidth || 1)), INDICATOR_MIN_LEN);
      this.indicatorStyle.width = this.indicatorWidth + 'px';
  
      this.maxPosX = wrapperWidth - this.indicatorWidth;
  
      this.sizeRatioX = this.maxPosX / this.scroller.maxScrollX;
    }
  };
  
  Indicator.prototype._addDOMEvents = function () {
    var eventOperation = addEvent;
    this._handleDOMEvents(eventOperation);
  };
  
  Indicator.prototype._removeDOMEvents = function () {
    var eventOperation = removeEvent;
    this._handleDOMEvents(eventOperation);
    this._handleMoveEvents(eventOperation);
  };
  
  Indicator.prototype._handleMoveEvents = function (eventOperation) {
    if (!this.scroller.options.disableTouch) {
      eventOperation(window, 'touchmove', this);
    }
    if (!this.scroller.options.disableMouse) {
      eventOperation(window, 'mousemove', this);
    }
  };
  
  Indicator.prototype._handleDOMEvents = function (eventOperation) {
    if (!this.scroller.options.disableTouch) {
      eventOperation(this.indicator, 'touchstart', this);
      eventOperation(window, 'touchend', this);
    }
    if (!this.scroller.options.disableMouse) {
      eventOperation(this.indicator, 'mousedown', this);
      eventOperation(window, 'mouseup', this);
    }
  };
  
  function pullDownMixin(BScroll) {
    BScroll.prototype._initPullDown = function () {
      // must watch scroll in real time
      this.options.probeType = PROBE_REALTIME;
    };
  
    BScroll.prototype._checkPullDown = function () {
      var _options$pullDownRefr = this.options.pullDownRefresh,
          _options$pullDownRefr2 = _options$pullDownRefr.threshold,
          threshold = _options$pullDownRefr2 === undefined ? 90 : _options$pullDownRefr2,
          _options$pullDownRefr3 = _options$pullDownRefr.stop,
          stop = _options$pullDownRefr3 === undefined ? 40 : _options$pullDownRefr3;
  
      // check if a real pull down action
  
      if (this.directionY !== DIRECTION_DOWN || this.y < threshold) {
        return false;
      }
  
      if (!this.pulling) {
        this.pulling = true;
        this.trigger('pullingDown');
      }
      this.scrollTo(this.x, stop, this.options.bounceTime, ease.bounce);
  
      return this.pulling;
    };
  
    BScroll.prototype.finishPullDown = function () {
      this.pulling = false;
      this.resetPosition(this.options.bounceTime, ease.bounce);
    };
  
    BScroll.prototype.openPullDown = function () {
      var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
  
      this.options.pullDownRefresh = config;
      this._initPullDown();
    };
  
    BScroll.prototype.closePullDown = function () {
      this.options.pullDownRefresh = false;
    };
  }
  
  function pullUpMixin(BScroll) {
    BScroll.prototype._initPullUp = function () {
      // must watch scroll in real time
      this.options.probeType = PROBE_REALTIME;
  
      this.pullupWatching = false;
      this._watchPullUp();
    };
  
    BScroll.prototype._watchPullUp = function () {
      if (this.pullupWatching) {
        return;
      }
      this.pullupWatching = true;
      this.on('scroll', this._checkToEnd);
    };
  
    BScroll.prototype._checkToEnd = function (pos) {
      var _this = this;
  
      var _options$pullUpLoad$t = this.options.pullUpLoad.threshold,
          threshold = _options$pullUpLoad$t === undefined ? 0 : _options$pullUpLoad$t;
  
      if (this.movingDirectionY === DIRECTION_UP && pos.y <= this.maxScrollY + threshold) {
        // reset pullupWatching status after scroll end.
        this.once('scrollEnd', function () {
          _this.pullupWatching = false;
        });
        this.trigger('pullingUp');
        this.off('scroll', this._checkToEnd);
      }
    };
  
    BScroll.prototype.finishPullUp = function () {
      var _this2 = this;
  
      if (this.pullupWatching) {
        this.once('scrollEnd', function () {
          _this2._watchPullUp();
        });
      } else {
        this._watchPullUp();
      }
    };
  
    BScroll.prototype.openPullUp = function () {
      var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
  
      this.options.pullUpLoad = config;
      this._initPullUp();
    };
  
    BScroll.prototype.closePullUp = function () {
      this.options.pullUpLoad = false;
      if (!this.pullupWatching) {
        return;
      }
      this.pullupWatching = false;
      this.off('scroll', this._checkToEnd);
    };
  }
  
  function mouseWheelMixin(BScroll) {
    BScroll.prototype._initMouseWheel = function () {
      var _this = this;
  
      this._handleMouseWheelEvent(addEvent);
  
      this.on('destroy', function () {
        clearTimeout(_this.mouseWheelTimer);
        clearTimeout(_this.mouseWheelEndTimer);
        _this._handleMouseWheelEvent(removeEvent);
      });
  
      this.firstWheelOpreation = true;
    };
  
    BScroll.prototype._handleMouseWheelEvent = function (eventOperation) {
      eventOperation(this.wrapper, 'wheel', this);
      eventOperation(this.wrapper, 'mousewheel', this);
      eventOperation(this.wrapper, 'DOMMouseScroll', this);
    };
  
    BScroll.prototype._onMouseWheel = function (e) {
      var _this2 = this;
  
      if (!this.enabled) {
        return;
      }
      e.preventDefault();
  
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      if (this.firstWheelOpreation) {
        this.trigger('scrollStart');
      }
      this.firstWheelOpreation = false;
  
      var _options$mouseWheel = this.options.mouseWheel,
          _options$mouseWheel$s = _options$mouseWheel.speed,
          speed = _options$mouseWheel$s === undefined ? 20 : _options$mouseWheel$s,
          _options$mouseWheel$i = _options$mouseWheel.invert,
          invert = _options$mouseWheel$i === undefined ? false : _options$mouseWheel$i,
          _options$mouseWheel$e = _options$mouseWheel.easeTime,
          easeTime = _options$mouseWheel$e === undefined ? 300 : _options$mouseWheel$e;
  
  
      clearTimeout(this.mouseWheelTimer);
      this.mouseWheelTimer = setTimeout(function () {
        if (!_this2.options.snap && !easeTime) {
          _this2.trigger('scrollEnd', {
            x: _this2.x,
            y: _this2.y
          });
        }
        _this2.firstWheelOpreation = true;
      }, 400);
  
      var wheelDeltaX = void 0;
      var wheelDeltaY = void 0;
  
      switch (true) {
        case 'deltaX' in e:
          if (e.deltaMode === 1) {
            wheelDeltaX = -e.deltaX * speed;
            wheelDeltaY = -e.deltaY * speed;
          } else {
            wheelDeltaX = -e.deltaX;
            wheelDeltaY = -e.deltaY;
          }
          break;
        case 'wheelDeltaX' in e:
          wheelDeltaX = e.wheelDeltaX / 120 * speed;
          wheelDeltaY = e.wheelDeltaY / 120 * speed;
          break;
        case 'wheelDelta' in e:
          wheelDeltaX = wheelDeltaY = e.wheelDelta / 120 * speed;
          break;
        case 'detail' in e:
          wheelDeltaX = wheelDeltaY = -e.detail / 3 * speed;
          break;
        default:
          return;
      }
  
      var direction = invert ? -1 : 1;
      wheelDeltaX *= direction;
      wheelDeltaY *= direction;
  
      if (!this.hasVerticalScroll) {
        wheelDeltaX = wheelDeltaY;
        wheelDeltaY = 0;
      }
  
      var newX = void 0;
      var newY = void 0;
      if (this.options.snap) {
        newX = this.currentPage.pageX;
        newY = this.currentPage.pageY;
  
        if (wheelDeltaX > 0) {
          newX--;
        } else if (wheelDeltaX < 0) {
          newX++;
        }
  
        if (wheelDeltaY > 0) {
          newY--;
        } else if (wheelDeltaY < 0) {
          newY++;
        }
  
        this._goToPage(newX, newY);
        return;
      }
  
      newX = this.x + Math.round(this.hasHorizontalScroll ? wheelDeltaX : 0);
      newY = this.y + Math.round(this.hasVerticalScroll ? wheelDeltaY : 0);
  
      this.movingDirectionX = this.directionX = wheelDeltaX > 0 ? -1 : wheelDeltaX < 0 ? 1 : 0;
      this.movingDirectionY = this.directionY = wheelDeltaY > 0 ? -1 : wheelDeltaY < 0 ? 1 : 0;
  
      if (newX > this.minScrollX) {
        newX = this.minScrollX;
      } else if (newX < this.maxScrollX) {
        newX = this.maxScrollX;
      }
  
      if (newY > this.minScrollY) {
        newY = this.minScrollY;
      } else if (newY < this.maxScrollY) {
        newY = this.maxScrollY;
      }
  
      var needTriggerEnd = this.y === newY;
      this.scrollTo(newX, newY, easeTime, ease.swipe);
      this.trigger('scroll', {
        x: this.x,
        y: this.y
      });
      clearTimeout(this.mouseWheelEndTimer);
      if (needTriggerEnd) {
        this.mouseWheelEndTimer = setTimeout(function () {
          _this2.trigger('scrollEnd', {
            x: _this2.x,
            y: _this2.y
          });
        }, easeTime);
      }
    };
  }
  
  function zoomMixin(BScroll) {
    BScroll.prototype._initZoom = function () {
      var _options$zoom = this.options.zoom,
          _options$zoom$start = _options$zoom.start,
          start = _options$zoom$start === undefined ? 1 : _options$zoom$start,
          _options$zoom$min = _options$zoom.min,
          min = _options$zoom$min === undefined ? 1 : _options$zoom$min,
          _options$zoom$max = _options$zoom.max,
          max = _options$zoom$max === undefined ? 4 : _options$zoom$max;
  
      this.scale = Math.min(Math.max(start, min), max);
      this.setScale(this.scale);
      this.scrollerStyle[style.transformOrigin] = '0 0';
    };
  
    BScroll.prototype._zoomTo = function (scale, originX, originY, startScale) {
      this.scaled = true;
  
      var lastScale = scale / (startScale || this.scale);
      this.setScale(scale);
  
      this.refresh();
  
      var newX = Math.round(this.startX - (originX - this.relativeX) * (lastScale - 1));
      var newY = Math.round(this.startY - (originY - this.relativeY) * (lastScale - 1));
  
      if (newX > this.minScrollX) {
        newX = this.minScrollX;
      } else if (newX < this.maxScrollX) {
        newX = this.maxScrollX;
      }
  
      if (newY > this.minScrollY) {
        newY = this.minScrollY;
      } else if (newY < this.maxScrollY) {
        newY = this.maxScrollY;
      }
  
      if (this.x !== newX || this.y !== newY) {
        this.scrollTo(newX, newY, this.options.bounceTime);
      }
  
      this.scaled = false;
    };
  
    BScroll.prototype.zoomTo = function (scale, x, y) {
      var _offsetToBody = offsetToBody(this.wrapper),
          left = _offsetToBody.left,
          top = _offsetToBody.top;
  
      var originX = x + left - this.x;
      var originY = y + top - this.y;
      this._zoomTo(scale, originX, originY);
    };
  
    BScroll.prototype._zoomStart = function (e) {
      var firstFinger = e.touches[0];
      var secondFinger = e.touches[1];
      var deltaX = Math.abs(firstFinger.pageX - secondFinger.pageX);
      var deltaY = Math.abs(firstFinger.pageY - secondFinger.pageY);
  
      this.startDistance = getDistance(deltaX, deltaY);
      this.startScale = this.scale;
  
      var _offsetToBody2 = offsetToBody(this.wrapper),
          left = _offsetToBody2.left,
          top = _offsetToBody2.top;
  
      this.originX = Math.abs(firstFinger.pageX + secondFinger.pageX) / 2 + left - this.x;
      this.originY = Math.abs(firstFinger.pageY + secondFinger.pageY) / 2 + top - this.y;
  
      this.trigger('zoomStart');
    };
  
    BScroll.prototype._zoom = function (e) {
      if (!this.enabled || this.destroyed || eventType[e.type] !== this.initiated) {
        return;
      }
  
      if (this.options.preventDefault) {
        e.preventDefault();
      }
  
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      var firstFinger = e.touches[0];
      var secondFinger = e.touches[1];
      var deltaX = Math.abs(firstFinger.pageX - secondFinger.pageX);
      var deltaY = Math.abs(firstFinger.pageY - secondFinger.pageY);
      var distance = getDistance(deltaX, deltaY);
      var scale = distance / this.startDistance * this.startScale;
  
      this.scaled = true;
  
      var _options$zoom2 = this.options.zoom,
          _options$zoom2$min = _options$zoom2.min,
          min = _options$zoom2$min === undefined ? 1 : _options$zoom2$min,
          _options$zoom2$max = _options$zoom2.max,
          max = _options$zoom2$max === undefined ? 4 : _options$zoom2$max;
  
  
      if (scale < min) {
        scale = 0.5 * min * Math.pow(2.0, scale / min);
      } else if (scale > max) {
        scale = 2.0 * max * Math.pow(0.5, max / scale);
      }
  
      var lastScale = scale / this.startScale;
  
      var x = this.startX - (this.originX - this.relativeX) * (lastScale - 1);
      var y = this.startY - (this.originY - this.relativeY) * (lastScale - 1);
  
      this.setScale(scale);
  
      this.scrollTo(x, y, 0);
    };
  
    BScroll.prototype._zoomEnd = function (e) {
      if (!this.enabled || this.destroyed || eventType[e.type] !== this.initiated) {
        return;
      }
  
      if (this.options.preventDefault) {
        e.preventDefault();
      }
  
      if (this.options.stopPropagation) {
        e.stopPropagation();
      }
  
      this.isInTransition = false;
      this.isAnimating = false;
      this.initiated = 0;
  
      var _options$zoom3 = this.options.zoom,
          _options$zoom3$min = _options$zoom3.min,
          min = _options$zoom3$min === undefined ? 1 : _options$zoom3$min,
          _options$zoom3$max = _options$zoom3.max,
          max = _options$zoom3$max === undefined ? 4 : _options$zoom3$max;
  
  
      var scale = this.scale > max ? max : this.scale < min ? min : this.scale;
  
      this._zoomTo(scale, this.originX, this.originY, this.startScale);
  
      this.trigger('zoomEnd');
    };
  }
  
  // import { ease } from '../util/ease'
  
  // Number of items to instantiate beyond current view in the scroll direction.
  var RUNWAY_ITEMS = 30;
  
  // Number of items to instantiate beyond current view in the opposite direction.
  var RUNWAY_ITEMS_OPPOSITE = 10;
  
  // The animation interval (in ms) for fading in content from tombstones.
  var ANIMATION_DURATION_MS = 200;
  
  // The number of pixels of default additional length to allow scrolling to.
  var DEFAULT_SCROLL_RUNWAY = 2000;
  
  function infiniteMixin(BScroll) {
    BScroll.prototype._initInfinite = function () {
      this.options.probeType = 3;
      this.maxScrollY = -DEFAULT_SCROLL_RUNWAY;
      this.infiniteScroller = new InfiniteScroller(this, this.options.infinity);
    };
  }
  
  function isTombstoneNode(node) {
    if (node && node.classList) {
      return node.classList.contains('tombstone');
    }
  }
  
  function InfiniteScroller(scroller, options) {
    var _this = this;
  
    this.options = options;
    assert(typeof this.options.createTombstone === 'function', 'Infinite scroll need createTombstone Function to create tombstone');
  
    assert(typeof this.options.fetch === 'function', 'Infinite scroll need fetch Function to fetch new data.');
  
    assert(typeof this.options.render === 'function', 'Infinite scroll need render Function to render each item.');
  
    this.firstAttachedItem = 0;
    this.lastAttachedItem = 0;
  
    this.anchorScrollTop = 0;
    this.anchorItem = {
      index: 0,
      offset: 0
    };
    this.tombstoneHeight = 0;
    this.tombstoneWidth = 0;
    this.tombstones = [];
  
    this.items = [];
    this.loadedItems = 0;
    this.requestInProgress = false;
    this.hasMore = true;
  
    this.scroller = scroller;
    this.wrapperEl = this.scroller.wrapper;
    this.scrollerEl = this.scroller.scroller;
    this.scroller.on('scroll', function () {
      _this.onScroll();
    });
    this.scroller.on('resize', function () {
      _this.onResize();
    });
  
    this.onResize();
  }
  
  InfiniteScroller.prototype.onScroll = function () {
    var scrollTop = -this.scroller.y;
    var delta = scrollTop - this.anchorScrollTop;
    if (scrollTop === 0) {
      this.anchorItem = {
        index: 0,
        offset: 0
      };
    } else {
      this.anchorItem = this._calculateAnchoredItem(this.anchorItem, delta);
    }
  
    this.anchorScrollTop = scrollTop;
    var lastScreenItem = this._calculateAnchoredItem(this.anchorItem, this.wrapperEl.offsetHeight);
  
    var start = this.anchorItem.index;
    var end = lastScreenItem.index;
    if (delta < 0) {
      start -= RUNWAY_ITEMS;
      end += RUNWAY_ITEMS_OPPOSITE;
    } else {
      start -= RUNWAY_ITEMS_OPPOSITE;
      end += RUNWAY_ITEMS;
    }
    this.fill(start, end);
    this.maybeRequestContent();
  };
  
  InfiniteScroller.prototype.onResize = function () {
    var tombstone = this.options.createTombstone();
    tombstone.style.position = 'absolute';
    this.scrollerEl.appendChild(tombstone);
    tombstone.style.display = '';
    this.tombstoneHeight = tombstone.offsetHeight;
    this.tombstoneWidth = tombstone.offsetWidth;
    this.scrollerEl.removeChild(tombstone);
  
    for (var i = 0; i < this.items.length; i++) {
      this.items[i].height = this.items[i].width = 0;
    }
  
    this.onScroll();
  };
  
  InfiniteScroller.prototype.fill = function (start, end) {
    this.firstAttachedItem = Math.max(0, start);
    if (!this.hasMore) {
      end = Math.min(end, this.items.length);
    }
    this.lastAttachedItem = end;
    this.attachContent();
  };
  
  InfiniteScroller.prototype.maybeRequestContent = function () {
    var _this2 = this;
  
    if (this.requestInProgress || !this.hasMore) {
      return;
    }
    var itemsNeeded = this.lastAttachedItem - this.loadedItems;
    if (itemsNeeded <= 0) {
      return;
    }
    this.requestInProgress = true;
    this.options.fetch(itemsNeeded).then(function (items) {
      _this2.requestInProgress = false;
      if (items) {
        _this2.addContent(items);
      } else {
        _this2.hasMore = false;
        var tombstoneLen = _this2._removeTombstones();
        var curPos = 0;
        if (_this2.anchorItem.index <= _this2.items.length) {
          curPos = _this2._fixScrollPosition();
          _this2._setupAnimations({}, curPos);
          _this2.scroller.resetPosition(_this2.scroller.options.bounceTime);
        } else {
          _this2.anchorItem.index -= tombstoneLen;
          curPos = _this2._fixScrollPosition();
          _this2._setupAnimations({}, curPos);
          _this2.scroller.stop();
          _this2.scroller.resetPosition();
          _this2.onScroll();
        }
      }
    });
  };
  
  InfiniteScroller.prototype.addContent = function (items) {
    for (var i = 0; i < items.length; i++) {
      if (this.items.length <= this.loadedItems) {
        this._addItem();
      }
      this.items[this.loadedItems++].data = items[i];
    }
    this.attachContent();
    this.maybeRequestContent();
  };
  
  InfiniteScroller.prototype.attachContent = function () {
    var unusedNodes = this._collectUnusedNodes();
    var tombstoneAnimations = this._createDOMNodes(unusedNodes);
    this._cleanupUnusedNodes(unusedNodes);
    this._cacheNodeSize();
    var curPos = this._fixScrollPosition();
    this._setupAnimations(tombstoneAnimations, curPos);
  };
  
  InfiniteScroller.prototype.resetMore = function () {
    this.hasMore = true;
  };
  
  InfiniteScroller.prototype._removeTombstones = function () {
    var markIndex = void 0;
    var tombstoneLen = 0;
    var itemLen = this.items.length;
    for (var i = 0; i < itemLen; i++) {
      var currentNode = this.items[i].node;
      var currentData = this.items[i].data;
      if ((!currentNode || isTombstoneNode(currentNode)) && !currentData) {
        if (!markIndex) {
          markIndex = i;
        }
        if (currentNode) {
          this.scrollerEl.removeChild(currentNode);
        }
      }
    }
    tombstoneLen = itemLen - markIndex;
    this.items.splice(markIndex);
    this.lastAttachedItem = Math.min(this.lastAttachedItem, this.items.length);
    return tombstoneLen;
  };
  
  InfiniteScroller.prototype._collectUnusedNodes = function () {
    var unusedNodes = [];
    for (var i = 0; i < this.items.length; i++) {
      // Skip the items which should be visible.
      if (i === this.firstAttachedItem) {
        i = this.lastAttachedItem - 1;
        continue;
      }
      var currentNode = this.items[i].node;
      if (currentNode) {
        if (isTombstoneNode(currentNode)) {
          // Cache tombstones for reuse
          this.tombstones.push(currentNode);
          this.tombstones[this.tombstones.length - 1].style.display = 'none';
        } else {
          unusedNodes.push(currentNode);
        }
      }
      this.items[i].node = null;
    }
    return unusedNodes;
  };
  
  InfiniteScroller.prototype._createDOMNodes = function (unusedNodes) {
    var tombstoneAnimations = {};
    for (var i = this.firstAttachedItem; i < this.lastAttachedItem; i++) {
      while (this.items.length <= i) {
        this._addItem();
      }
      var currentNode = this.items[i].node;
      var currentData = this.items[i].data;
      if (currentNode) {
        if (isTombstoneNode(currentNode) && currentData) {
          currentNode.style.zIndex = 1;
          tombstoneAnimations[i] = [currentNode, this.items[i].top - this.anchorScrollTop];
          this.items[i].node = null;
        } else {
          continue;
        }
      }
      var node = currentData ? this.options.render(currentData, unusedNodes.pop()) : this._getTombStone();
      node.style.position = 'absolute';
      this.items[i].top = -1;
      this.scrollerEl.appendChild(node);
      this.items[i].node = node;
    }
    return tombstoneAnimations;
  };
  
  InfiniteScroller.prototype._cleanupUnusedNodes = function (unusedNodes) {
    while (unusedNodes.length) {
      this.scrollerEl.removeChild(unusedNodes.pop());
    }
  };
  
  InfiniteScroller.prototype._cacheNodeSize = function () {
    for (var i = this.firstAttachedItem; i < this.lastAttachedItem; i++) {
      // Only cache the height if we have the real contents, not a placeholder.
      if (this.items[i].data && !this.items[i].height) {
        this.items[i].height = this.items[i].node.offsetHeight;
        this.items[i].width = this.items[i].node.offsetWidth;
      }
    }
  };
  
  InfiniteScroller.prototype._fixScrollPosition = function () {
    this.anchorScrollTop = 0;
    for (var _i = 0; _i < this.anchorItem.index; _i++) {
      this.anchorScrollTop += this.items[_i].height || this.tombstoneHeight;
    }
    this.anchorScrollTop += this.anchorItem.offset;
  
    // Position all nodes.
    var curPos = this.anchorScrollTop - this.anchorItem.offset;
    var i = this.anchorItem.index;
    while (i > this.firstAttachedItem) {
      curPos -= this.items[i - 1].height || this.tombstoneHeight;
      i--;
    }
  
    return curPos;
  };
  
  InfiniteScroller.prototype._setupAnimations = function (tombstoneAnimations, curPos) {
    var _this3 = this;
  
    for (var i in tombstoneAnimations) {
      var animation = tombstoneAnimations[i];
      this.items[i].node.style.transform = 'translateY(' + (this.anchorScrollTop + animation[1]) + 'px) scale(' + this.tombstoneWidth / this.items[i].width + ', ' + this.tombstoneHeight / this.items[i].height + ')';
      // Call offsetTop on the nodes to be animated to force them to apply current transforms.
      /* eslint-disable no-unused-expressions */
      this.items[i].node.offsetTop;
      animation[0].offsetTop;
      this.items[i].node.style.transition = 'transform ' + ANIMATION_DURATION_MS + 'ms';
    }
  
    for (var _i2 = this.firstAttachedItem; _i2 < this.lastAttachedItem; _i2++) {
      var _animation = tombstoneAnimations[_i2];
      if (_animation) {
        var tombstoneNode = _animation[0];
        tombstoneNode.style.transition = 'transform ' + ANIMATION_DURATION_MS + 'ms, opacity ' + ANIMATION_DURATION_MS + 'ms';
        tombstoneNode.style.transform = 'translateY(' + curPos + 'px) scale(' + this.items[_i2].width / this.tombstoneWidth + ', ' + this.items[_i2].height / this.tombstoneHeight + ')';
        tombstoneNode.style.opacity = 0;
      }
      if (curPos !== this.items[_i2].top) {
        if (!_animation) {
          this.items[_i2].node.style.transition = '';
        }
        this.items[_i2].node.style.transform = 'translateY(' + curPos + 'px)';
      }
      this.items[_i2].top = curPos;
      curPos += this.items[_i2].height || this.tombstoneHeight;
    }
  
    this.scroller.maxScrollY = -(curPos - this.wrapperEl.offsetHeight + (this.hasMore ? DEFAULT_SCROLL_RUNWAY : 0));
  
    setTimeout(function () {
      for (var _i3 in tombstoneAnimations) {
        var _animation2 = tombstoneAnimations[_i3];
        _animation2[0].style.display = 'none';
        // Tombstone can be recycled now.
        _this3.tombstones.push(_animation2[0]);
      }
    }, ANIMATION_DURATION_MS);
  };
  
  InfiniteScroller.prototype._getTombStone = function () {
    var tombstone = this.tombstones.pop();
    if (tombstone) {
      tombstone.style.display = '';
      tombstone.style.opacity = 1;
      tombstone.style.transform = '';
      tombstone.style.transition = '';
      return tombstone;
    }
    return this.options.createTombstone();
  };
  
  InfiniteScroller.prototype._addItem = function () {
    this.items.push({
      data: null,
      node: null,
      height: 0,
      width: 0,
      top: 0
    });
  };
  
  InfiniteScroller.prototype._calculateAnchoredItem = function (initialAnchor, delta) {
    if (delta === 0) {
      return initialAnchor;
    }
    var i = initialAnchor.index;
    var tombstones = 0;
  
    delta += initialAnchor.offset;
    if (delta < 0) {
      while (delta < 0 && i > 0 && this.items[i - 1].height) {
        delta += this.items[i - 1].height;
        i--;
      }
      tombstones = Math.max(-i, Math.ceil(Math.min(delta, 0) / this.tombstoneHeight));
    } else {
      while (delta > 0 && i < this.items.length && this.items[i].height && this.items[i].height < delta) {
        delta -= this.items[i].height;
        i++;
      }
      if (i >= this.items.length || !this.items[i].height) {
        tombstones = Math.floor(Math.max(delta, 0) / this.tombstoneHeight);
      }
    }
    i += tombstones;
    delta -= tombstones * this.tombstoneHeight;
  
    return {
      index: i,
      offset: delta
    };
  };
  
  function BScroll(el, options) {
    this.wrapper = typeof el === 'string' ? document.querySelector(el) : el;
    if (!this.wrapper) {
      warn('Can not resolve the wrapper DOM.');
    }
    this.scroller = this.wrapper.children[0];
    if (!this.scroller) {
      warn('The wrapper need at least one child element to be scroller.');
    }
    // cache style for better performance
    this.scrollerStyle = this.scroller.style;
  
    this._init(el, options);
  }
  
  initMixin(BScroll);
  coreMixin(BScroll);
  eventMixin(BScroll);
  snapMixin(BScroll);
  wheelMixin(BScroll);
  scrollbarMixin(BScroll);
  pullDownMixin(BScroll);
  pullUpMixin(BScroll);
  mouseWheelMixin(BScroll);
  zoomMixin(BScroll);
  infiniteMixin(BScroll);
  
  BScroll.Version = '1.12.6';
  
  /* harmony default export */ __webpack_exports__["default"] = (BScroll);
  
  
  /***/ }),
  /* 75 */,
  /* 76 */,
  /* 77 */,
  /* 78 */,
  /* 79 */,
  /* 80 */,
  /* 81 */,
  /* 82 */,
  /* 83 */,
  /* 84 */,
  /* 85 */,
  /* 86 */,
  /* 87 */,
  /* 88 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var classof = __webpack_require__(67);
  var ITERATOR = __webpack_require__(2)('iterator');
  var Iterators = __webpack_require__(13);
  module.exports = __webpack_require__(1).getIteratorMethod = function (it) {
    if (it != undefined) return it[ITERATOR]
      || it['@@iterator']
      || Iterators[classof(it)];
  };
  
  
  /***/ }),
  /* 89 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod.exports);
      global.env = mod.exports;
    }
  })(this, function (exports) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    var inBrowser = exports.inBrowser = typeof window !== 'undefined';
    var ua = exports.ua = inBrowser && navigator.userAgent.toLowerCase();
    var isAndroid = exports.isAndroid = ua && ua.indexOf('android') > 0;
  });
  
  /***/ }),
  /* 90 */,
  /* 91 */
  /***/ (function(module, exports, __webpack_require__) {
  
  __webpack_require__(92);
  module.exports = __webpack_require__(1).Object.assign;
  
  
  /***/ }),
  /* 92 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // 19.1.3.1 Object.assign(target, source)
  var $export = __webpack_require__(12);
  
  $export($export.S + $export.F, 'Object', { assign: __webpack_require__(93) });
  
  
  /***/ }),
  /* 93 */
  /***/ (function(module, exports, __webpack_require__) {
  
  "use strict";
  
  // 19.1.2.1 Object.assign(target, source, ...)
  var getKeys = __webpack_require__(15);
  var gOPS = __webpack_require__(31);
  var pIE = __webpack_require__(22);
  var toObject = __webpack_require__(24);
  var IObject = __webpack_require__(33);
  var $assign = Object.assign;
  
  // should work with symbols and should have deterministic property order (V8 bug)
  module.exports = !$assign || __webpack_require__(9)(function () {
    var A = {};
    var B = {};
    // eslint-disable-next-line no-undef
    var S = Symbol();
    var K = 'abcdefghijklmnopqrst';
    A[S] = 7;
    K.split('').forEach(function (k) { B[k] = k; });
    return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;
  }) ? function assign(target, source) { // eslint-disable-line no-unused-vars
    var T = toObject(target);
    var aLen = arguments.length;
    var index = 1;
    var getSymbols = gOPS.f;
    var isEnum = pIE.f;
    while (aLen > index) {
      var S = IObject(arguments[index++]);
      var keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S);
      var length = keys.length;
      var j = 0;
      var key;
      while (length > j) if (isEnum.call(S, key = keys[j++])) T[key] = S[key];
    } return T;
  } : $assign;
  
  
  /***/ }),
  /* 94 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [exports, __webpack_require__(89)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(exports, require('./env'));
    } else {
      var mod = {
        exports: {}
      };
      factory(mod.exports, global.env);
      global.dom = mod.exports;
    }
  })(this, function (exports, _env) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    exports.hasClass = hasClass;
    exports.addClass = addClass;
    exports.removeClass = removeClass;
    exports.getData = getData;
    exports.getRect = getRect;
    exports.prefixStyle = prefixStyle;
    exports.getMatchedTarget = getMatchedTarget;
    exports.dispatchEvent = dispatchEvent;
    function hasClass(el, className) {
      var reg = new RegExp('(^|\\s)' + className + '(\\s|$)');
      return reg.test(el.className);
    }
  
    function addClass(el, className) {
      if (hasClass(el, className)) {
        return;
      }
  
      var newClass = el.className.split(' ');
      newClass.push(className);
      el.className = newClass.join(' ');
    }
  
    function removeClass(el, className) {
      if (!hasClass(el, className)) {
        return;
      }
  
      var reg = new RegExp('(^|\\s)' + className + '(\\s|$)', 'g');
      el.className = el.className.replace(reg, ' ');
    }
  
    function getData(el, name) {
      var prefix = 'data-';
      return el.getAttribute(prefix + name);
    }
  
    function getRect(el) {
      return {
        top: el.offsetTop,
        left: el.offsetLeft,
        width: el.offsetWidth,
        height: el.offsetHeight
      };
    }
  
    var vendor = function () {
      if (!_env.inBrowser) {
        return false;
      }
      var elementStyle = document.createElement('div').style;
      var transformNames = {
        standard: 'transform',
        webkit: 'webkitTransform',
        Moz: 'MozTransform',
        O: 'OTransform',
        ms: 'msTransform'
      };
  
      for (var key in transformNames) {
        if (elementStyle[transformNames[key]] !== undefined) {
          return key;
        }
      }
  
      return false;
    }();
  
    function prefixStyle(style) {
      if (vendor === false) {
        return false;
      }
  
      if (vendor === 'standard') {
        if (style === 'transitionEnd') {
          return 'transitionend';
        }
        return style;
      }
  
      return vendor + style.charAt(0).toUpperCase() + style.substr(1);
    }
  
    function getMatchedTarget(e, targetClassName) {
      var el = e.target;
  
      while (el && !hasClass(el, targetClassName)) {
        if (el === e.currentTarget) return null;
        el = el.parentNode;
      }
  
      return el;
    }
  
    function dispatchEvent(ele, name) {
      var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},
          _ref$type = _ref.type,
          type = _ref$type === undefined ? 'Event' : _ref$type,
          _ref$bubbles = _ref.bubbles,
          bubbles = _ref$bubbles === undefined ? true : _ref$bubbles,
          _ref$cancelable = _ref.cancelable,
          cancelable = _ref$cancelable === undefined ? true : _ref$cancelable;
  
      var e = document.createEvent(type);
      e.initEvent(name, bubbles, cancelable);
      ele.dispatchEvent(e);
    }
  });
  
  /***/ }),
  /* 95 */,
  /* 96 */,
  /* 97 */,
  /* 98 */,
  /* 99 */,
  /* 100 */,
  /* 101 */,
  /* 102 */
  /***/ (function(module, exports, __webpack_require__) {
  
  function injectStyle (ssrContext) {
    __webpack_require__(104)
  }
  var Component = __webpack_require__(5)(
    /* script */
    __webpack_require__(105),
    /* template */
    __webpack_require__(106),
    /* styles */
    injectStyle,
    /* scopeId */
    null,
    /* moduleIdentifier (server only) */
    null
  )
  
  module.exports = Component.exports
  
  
  /***/ }),
  /* 103 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports);
      global.scroll = mod.exports;
    }
  })(this, function (module, exports) {
    "use strict";
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    exports.default = {
      props: {
        options: {
          type: Object,
          default: function _default() {
            return {};
          }
        }
      }
    };
    module.exports = exports["default"];
  });
  
  /***/ }),
  /* 104 */
  /***/ (function(module, exports) {
  
  // removed by extract-text-webpack-plugin
  
  /***/ }),
  /* 105 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports);
      global.loading = mod.exports;
    }
  })(this, function (module, exports) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
  
  
    var COMPONENT_NAME = 'cube-loading';
  
    exports.default = {
      name: COMPONENT_NAME,
      data: function data() {
        return {
          balde: 12
        };
      },
  
      props: {
        size: {
          type: Number
        }
      },
      computed: {
        style: function style() {
          if (!this.size) {
            return;
          }
          var value = this.size + 'px';
          return {
            width: value,
            height: value
          };
        }
      }
    };
    module.exports = exports['default'];
  });
  
  /***/ }),
  /* 106 */
  /***/ (function(module, exports) {
  
  module.exports={render:function (){var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;
    return _c('div', {
      staticClass: "cube-loading"
    }, [_c('span', {
      staticClass: "cube-loading-spinners",
      style: (_vm.style)
    }, _vm._l((_vm.balde), function(item) {
      return _c('i', {
        staticClass: "cube-loading-spinner"
      })
    }))])
  },staticRenderFns: []}
  
  /***/ }),
  /* 107 */,
  /* 108 */,
  /* 109 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports, __webpack_require__(118), __webpack_require__(125), __webpack_require__(32), __webpack_require__(48)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports, require('babel-runtime/helpers/slicedToArray'), require('babel-runtime/core-js/object/entries'), require('../../common/helpers/debug'), require('../../common/lang/string'));
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports, global.slicedToArray, global.entries, global.debug, global.string);
      global.deprecated = mod.exports;
    }
  })(this, function (module, exports, _slicedToArray2, _entries, _debug, _string) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
  
    var _slicedToArray3 = _interopRequireDefault(_slicedToArray2);
  
    var _entries2 = _interopRequireDefault(_entries);
  
    function _interopRequireDefault(obj) {
      return obj && obj.__esModule ? obj : {
        default: obj
      };
    }
  
    exports.default = {
      methods: {
        _checkDeprecated: function _checkDeprecated() {
          var _this = this;
  
          var props = this.$options.props;
          var componentName = this.$options.name;
  
          (0, _entries2.default)(props).forEach(function (_ref) {
            var _ref2 = (0, _slicedToArray3.default)(_ref, 2),
                key = _ref2[0],
                prop = _ref2[1];
  
            var deprecated = prop.deprecated;
  
            if (deprecated && _this[key] !== undefined) {
              (0, _debug.tip)('The property "' + (0, _string.kebab)(key) + '" is deprecated, please use the recommended property "' + deprecated.replacedBy + '" to replace it. Details could be found in https://didi.github.io/cube-ui/#/en-US/docs/' + componentName.substr(5) + '#cube-Propsconfiguration-anchor', componentName);
            }
          });
        }
      },
      mounted: function mounted() {
        this._checkDeprecated();
      }
    };
    module.exports = exports['default'];
  });
  
  /***/ }),
  /* 110 */,
  /* 111 */,
  /* 112 */,
  /* 113 */,
  /* 114 */,
  /* 115 */,
  /* 116 */,
  /* 117 */,
  /* 118 */
  /***/ (function(module, exports, __webpack_require__) {
  
  "use strict";
  
  
  exports.__esModule = true;
  
  var _isIterable2 = __webpack_require__(119);
  
  var _isIterable3 = _interopRequireDefault(_isIterable2);
  
  var _getIterator2 = __webpack_require__(122);
  
  var _getIterator3 = _interopRequireDefault(_getIterator2);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  exports.default = function () {
    function sliceIterator(arr, i) {
      var _arr = [];
      var _n = true;
      var _d = false;
      var _e = undefined;
  
      try {
        for (var _i = (0, _getIterator3.default)(arr), _s; !(_n = (_s = _i.next()).done); _n = true) {
          _arr.push(_s.value);
  
          if (i && _arr.length === i) break;
        }
      } catch (err) {
        _d = true;
        _e = err;
      } finally {
        try {
          if (!_n && _i["return"]) _i["return"]();
        } finally {
          if (_d) throw _e;
        }
      }
  
      return _arr;
    }
  
    return function (arr, i) {
      if (Array.isArray(arr)) {
        return arr;
      } else if ((0, _isIterable3.default)(Object(arr))) {
        return sliceIterator(arr, i);
      } else {
        throw new TypeError("Invalid attempt to destructure non-iterable instance");
      }
    };
  }();
  
  /***/ }),
  /* 119 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = { "default": __webpack_require__(120), __esModule: true };
  
  /***/ }),
  /* 120 */
  /***/ (function(module, exports, __webpack_require__) {
  
  __webpack_require__(47);
  __webpack_require__(38);
  module.exports = __webpack_require__(121);
  
  
  /***/ }),
  /* 121 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var classof = __webpack_require__(67);
  var ITERATOR = __webpack_require__(2)('iterator');
  var Iterators = __webpack_require__(13);
  module.exports = __webpack_require__(1).isIterable = function (it) {
    var O = Object(it);
    return O[ITERATOR] !== undefined
      || '@@iterator' in O
      // eslint-disable-next-line no-prototype-builtins
      || Iterators.hasOwnProperty(classof(O));
  };
  
  
  /***/ }),
  /* 122 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = { "default": __webpack_require__(123), __esModule: true };
  
  /***/ }),
  /* 123 */
  /***/ (function(module, exports, __webpack_require__) {
  
  __webpack_require__(47);
  __webpack_require__(38);
  module.exports = __webpack_require__(124);
  
  
  /***/ }),
  /* 124 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var anObject = __webpack_require__(11);
  var get = __webpack_require__(88);
  module.exports = __webpack_require__(1).getIterator = function (it) {
    var iterFn = get(it);
    if (typeof iterFn != 'function') throw TypeError(it + ' is not iterable!');
    return anObject(iterFn.call(it));
  };
  
  
  /***/ }),
  /* 125 */
  /***/ (function(module, exports, __webpack_require__) {
  
  module.exports = { "default": __webpack_require__(126), __esModule: true };
  
  /***/ }),
  /* 126 */
  /***/ (function(module, exports, __webpack_require__) {
  
  __webpack_require__(127);
  module.exports = __webpack_require__(1).Object.entries;
  
  
  /***/ }),
  /* 127 */
  /***/ (function(module, exports, __webpack_require__) {
  
  // https://github.com/tc39/proposal-object-values-entries
  var $export = __webpack_require__(12);
  var $entries = __webpack_require__(128)(true);
  
  $export($export.S, 'Object', {
    entries: function entries(it) {
      return $entries(it);
    }
  });
  
  
  /***/ }),
  /* 128 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var getKeys = __webpack_require__(15);
  var toIObject = __webpack_require__(8);
  var isEnum = __webpack_require__(22).f;
  module.exports = function (isEntries) {
    return function (it) {
      var O = toIObject(it);
      var keys = getKeys(O);
      var length = keys.length;
      var i = 0;
      var result = [];
      var key;
      while (length > i) if (isEnum.call(O, key = keys[i++])) {
        result.push(isEntries ? [key, O[key]] : O[key]);
      } return result;
    };
  };
  
  
  /***/ }),
  /* 129 */
  /***/ (function(module, exports, __webpack_require__) {
  
  function injectStyle (ssrContext) {
    __webpack_require__(134)
  }
  var Component = __webpack_require__(5)(
    /* script */
    __webpack_require__(135),
    /* template */
    __webpack_require__(139),
    /* styles */
    injectStyle,
    /* scopeId */
    null,
    /* moduleIdentifier (server only) */
    null
  )
  
  module.exports = Component.exports
  
  
  /***/ }),
  /* 130 */,
  /* 131 */,
  /* 132 */,
  /* 133 */,
  /* 134 */
  /***/ (function(module, exports) {
  
  // removed by extract-text-webpack-plugin
  
  /***/ }),
  /* 135 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports, __webpack_require__(68), __webpack_require__(74), __webpack_require__(102), __webpack_require__(136), __webpack_require__(103), __webpack_require__(109), __webpack_require__(94), __webpack_require__(48)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports, require('babel-runtime/core-js/object/assign'), require('better-scroll'), require('../loading/loading.vue'), require('../bubble/bubble.vue'), require('../../common/mixins/scroll'), require('../../common/mixins/deprecated'), require('../../common/helpers/dom'), require('../../common/lang/string'));
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports, global.assign, global.betterScroll, global.loading, global.bubble, global.scroll, global.deprecated, global.dom, global.string);
      global.scroll = mod.exports;
    }
  })(this, function (module, exports, _assign, _betterScroll, _loading, _bubble, _scroll, _deprecated, _dom, _string) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
  
    var _assign2 = _interopRequireDefault(_assign);
  
    var _betterScroll2 = _interopRequireDefault(_betterScroll);
  
    var _loading2 = _interopRequireDefault(_loading);
  
    var _bubble2 = _interopRequireDefault(_bubble);
  
    var _scroll2 = _interopRequireDefault(_scroll);
  
    var _deprecated2 = _interopRequireDefault(_deprecated);
  
    function _interopRequireDefault(obj) {
      return obj && obj.__esModule ? obj : {
        default: obj
      };
    }
  
    var COMPONENT_NAME = 'cube-scroll';
    var DIRECTION_H = 'horizontal';
    var DIRECTION_V = 'vertical';
    var DEFAULT_REFRESH_TXT = 'Refresh success';
    var DEFAULT_STOP_TIME = 600;
  
    var EVENT_CLICK = 'click';
    var EVENT_PULLING_DOWN = 'pulling-down';
    var EVENT_PULLING_UP = 'pulling-up';
  
    var EVENT_SCROLL = 'scroll';
    var EVENT_BEFORE_SCROLL_START = 'before-scroll-start';
    var EVENT_SCROLL_END = 'scroll-end';
  
    var NEST_MODE_NONE = 'none';
    var NEST_MODE_NATIVE = 'native';
  
    var SCROLL_EVENTS = [EVENT_SCROLL, EVENT_BEFORE_SCROLL_START, EVENT_SCROLL_END];
  
    var DEFAULT_OPTIONS = {
      observeDOM: true,
      click: true,
      probeType: 1,
      scrollbar: false,
      pullDownRefresh: false,
      pullUpLoad: false
    };
  
    exports.default = {
      name: COMPONENT_NAME,
      mixins: [_scroll2.default, _deprecated2.default],
      provide: function provide() {
        return {
          parentScroll: this
        };
      },
  
      inject: {
        parentScroll: {
          default: null
        }
      },
      props: {
        data: {
          type: Array,
          default: function _default() {
            return [];
          }
        },
        scrollEvents: {
          type: Array,
          default: function _default() {
            return [];
          },
          validator: function validator(arr) {
            return arr.every(function (item) {
              return SCROLL_EVENTS.indexOf(item) !== -1;
            });
          }
        },
  
        listenScroll: {
          type: Boolean,
          default: undefined,
          deprecated: {
            replacedBy: 'scroll-events'
          }
        },
        listenBeforeScroll: {
          type: Boolean,
          default: undefined,
          deprecated: {
            replacedBy: 'scroll-events'
          }
        },
        direction: {
          type: String,
          default: DIRECTION_V
        },
        refreshDelay: {
          type: Number,
          default: 20
        },
        nestMode: {
          type: String,
          default: NEST_MODE_NONE
        }
      },
      data: function data() {
        return {
          beforePullDown: true,
          isPullingDown: false,
          isPullUpLoad: false,
          pullUpDirty: true,
          bubbleY: 0,
          pullDownStyle: '',
          pullDownStop: 40,
          pullDownHeight: 60
        };
      },
  
      computed: {
        pullDownRefresh: function pullDownRefresh() {
          var pullDownRefresh = this.options.pullDownRefresh;
          if (!pullDownRefresh) {
            return pullDownRefresh;
          }
          if (pullDownRefresh === true) {
            pullDownRefresh = {};
          }
          return (0, _assign2.default)({ stop: this.pullDownStop }, pullDownRefresh);
        },
        pullUpLoad: function pullUpLoad() {
          return this.options.pullUpLoad;
        },
        pullUpTxt: function pullUpTxt() {
          var pullUpLoad = this.pullUpLoad;
          var txt = pullUpLoad && pullUpLoad.txt;
          var moreTxt = txt && txt.more || '';
          var noMoreTxt = txt && txt.noMore || '';
  
          return this.pullUpDirty ? moreTxt : noMoreTxt;
        },
        refreshTxt: function refreshTxt() {
          var pullDownRefresh = this.pullDownRefresh;
          return pullDownRefresh && pullDownRefresh.txt || DEFAULT_REFRESH_TXT;
        },
        finalScrollEvents: function finalScrollEvents() {
          var finalScrollEvents = this.scrollEvents.slice();
  
          if (!finalScrollEvents.length) {
            this.listenScroll && finalScrollEvents.push(EVENT_SCROLL);
            this.listenBeforeScroll && finalScrollEvents.push(EVENT_BEFORE_SCROLL_START);
          }
          return finalScrollEvents;
        },
        needListenScroll: function needListenScroll() {
          return this.finalScrollEvents.indexOf(EVENT_SCROLL) !== -1 || this.parentScroll;
        }
      },
      watch: {
        data: function data() {
          var _this = this;
  
          setTimeout(function () {
            _this.forceUpdate(true);
          }, this.refreshDelay);
        },
  
        pullDownRefresh: {
          handler: function handler(newVal, oldVal) {
            if (newVal) {
              this.scroll.openPullDown(newVal);
              if (!oldVal) {
                this._onPullDownRefresh();
                this._calculateMinHeight();
              }
            }
  
            if (!newVal && oldVal) {
              this.scroll.closePullDown();
              this._offPullDownRefresh();
              this._calculateMinHeight();
            }
          },
  
          deep: true
        },
        pullUpLoad: {
          handler: function handler(newVal, oldVal) {
            if (newVal) {
              this.scroll.openPullUp(newVal);
              if (!oldVal) {
                this._onPullUpLoad();
                this._calculateMinHeight();
              }
            }
  
            if (!newVal && oldVal) {
              this.scroll.closePullUp();
              this._offPullUpLoad();
              this._calculateMinHeight();
            }
          },
  
          deep: true
        }
      },
      activated: function activated() {
        this.enable();
      },
      deactivated: function deactivated() {
        this.disable();
      },
      mounted: function mounted() {
        var _this2 = this;
  
        this.$nextTick(function () {
          _this2.initScroll();
        });
      },
      beforeDestroy: function beforeDestroy() {
        this.destroy();
      },
  
      methods: {
        initScroll: function initScroll() {
          if (!this.$refs.wrapper) {
            return;
          }
          this._calculateMinHeight();
  
          var options = (0, _assign2.default)({}, DEFAULT_OPTIONS, {
            scrollY: this.direction === DIRECTION_V,
            scrollX: this.direction === DIRECTION_H,
            probeType: this.needListenScroll ? 3 : 1
          }, this.options);
  
          this.scroll = new _betterScroll2.default(this.$refs.wrapper, options);
  
          this.parentScroll && this.nestMode !== NEST_MODE_NONE && this._handleNestScroll();
  
          this._listenScrollEvents();
  
          if (this.pullDownRefresh) {
            this._getPullDownEleHeight();
            this._onPullDownRefresh();
          }
  
          if (this.pullUpLoad) {
            this._onPullUpLoad();
          }
        },
        disable: function disable() {
          this.scroll && this.scroll.disable();
        },
        enable: function enable() {
          this.scroll && this.scroll.enable();
        },
        refresh: function refresh() {
          this._calculateMinHeight();
          this.scroll && this.scroll.refresh();
        },
        destroy: function destroy() {
          this.scroll && this.scroll.destroy();
          this.scroll = null;
        },
        scrollTo: function scrollTo() {
          this.scroll && this.scroll.scrollTo.apply(this.scroll, arguments);
        },
        scrollToElement: function scrollToElement() {
          this.scroll && this.scroll.scrollToElement.apply(this.scroll, arguments);
        },
        clickItem: function clickItem(item) {
          this.$emit(EVENT_CLICK, item);
        },
        forceUpdate: function forceUpdate() {
          var _this3 = this;
  
          var dirty = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
  
          if (this.pullDownRefresh && this.isPullingDown) {
            this.isPullingDown = false;
            this._reboundPullDown(function () {
              _this3._afterPullDown(dirty);
            });
          } else if (this.pullUpLoad && this.isPullUpLoad) {
            this.isPullUpLoad = false;
            this.scroll.finishPullUp();
            this.pullUpDirty = dirty;
            dirty && this.refresh();
          } else {
            dirty && this.refresh();
          }
        },
        resetPullUpTxt: function resetPullUpTxt() {
          this.pullUpDirty = true;
        },
        _listenScrollEvents: function _listenScrollEvents() {
          var _this4 = this;
  
          this.finalScrollEvents.forEach(function (event) {
            _this4.scroll.on((0, _string.camelize)(event), function () {
              for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
                args[_key] = arguments[_key];
              }
  
              _this4.$emit.apply(_this4, [event].concat(args));
            });
          });
        },
        _handleNestScroll: function _handleNestScroll() {
          var _this5 = this;
  
          this.$nextTick(function () {
            var innerScroll = _this5.scroll;
            var outerScroll = _this5.parentScroll.scroll;
            var scrolls = [innerScroll, outerScroll];
            scrolls.forEach(function (scroll, index, arr) {
              scroll.on('touchEnd', function () {
                outerScroll.enable();
                innerScroll.enable();
  
                innerScroll.initiated = false;
              });
  
              scroll.on('beforeScrollStart', function () {
                _this5.touchStartMoment = true;
                var anotherScroll = arr[(index + 1) % 2];
                anotherScroll.stop();
                anotherScroll.resetPosition();
              });
            });
  
            innerScroll.on('scroll', function (pos) {
              if (!innerScroll.initiated || innerScroll.isInTransition) {
                return;
              }
  
              if (_this5.nestMode === NEST_MODE_NATIVE && !_this5.touchStartMoment) {
                return;
              }
  
              var reachBoundary = _this5._checkReachBoundary(pos);
              if (reachBoundary) {
                innerScroll.resetPosition();
                innerScroll.disable();
  
                outerScroll.pointX = innerScroll.pointX;
                outerScroll.pointY = innerScroll.pointY;
                outerScroll.enable();
              } else {
                outerScroll.disable();
              }
              _this5.touchStartMoment = false;
            });
          });
        },
        _checkReachBoundary: function _checkReachBoundary(pos) {
          var distX = this.scroll.distX;
          var distY = this.scroll.distY;
          var reachBoundaryX = distX > 0 ? pos.x >= this.scroll.minScrollX : distX < 0 ? pos.x <= this.scroll.maxScrollX : false;
          var reachBoundaryY = distY > 0 ? pos.y >= this.scroll.minScrollY : distY < 0 ? pos.y <= this.scroll.maxScrollY : false;
          var freeScroll = this.scroll.freeScroll;
  
          var reachBoundary = void 0;
          if (freeScroll) {
            return reachBoundaryX || reachBoundaryY;
          }
  
          if (this.scroll.movingDirectionX) {
            reachBoundary = reachBoundaryX;
          } else if (this.scroll.movingDirectionY) {
            reachBoundary = reachBoundaryY;
          }
          return reachBoundary;
        },
        _calculateMinHeight: function _calculateMinHeight() {
          if (this.$refs.listWrapper) {
            this.$refs.listWrapper.style.minHeight = this.pullDownRefresh || this.pullUpLoad ? (0, _dom.getRect)(this.$refs.wrapper).height + 1 + 'px' : 0;
          }
        },
        _onPullDownRefresh: function _onPullDownRefresh() {
          this.scroll.on('pullingDown', this._pullDownHandle);
          this.scroll.on('scroll', this._pullDownScrollHandle);
        },
        _offPullDownRefresh: function _offPullDownRefresh() {
          this.scroll.off('pullingDown', this._pullDownHandle);
          this.scroll.off('scroll', this._pullDownScrollHandle);
        },
        _pullDownHandle: function _pullDownHandle() {
          if (this.resetPullDownTimer) {
            clearTimeout(this.resetPullDownTimer);
          }
          this.beforePullDown = false;
          this.isPullingDown = true;
          this.$emit(EVENT_PULLING_DOWN);
        },
        _pullDownScrollHandle: function _pullDownScrollHandle(pos) {
          if (this.beforePullDown) {
            this.bubbleY = Math.max(0, pos.y - this.pullDownHeight);
            this.pullDownStyle = 'top:' + Math.min(pos.y - this.pullDownHeight, 0) + 'px';
          } else {
            this.bubbleY = 0;
            this.pullDownStyle = 'top:' + Math.min(pos.y - this.pullDownStop, 0) + 'px';
          }
        },
        _onPullUpLoad: function _onPullUpLoad() {
          this.scroll.on('pullingUp', this._pullUpHandle);
        },
        _offPullUpLoad: function _offPullUpLoad() {
          this.scroll.off('pullingUp', this._pullUpHandle);
        },
        _pullUpHandle: function _pullUpHandle() {
          this.isPullUpLoad = true;
          this.$emit(EVENT_PULLING_UP);
        },
        _reboundPullDown: function _reboundPullDown(next) {
          var _this6 = this;
  
          var _pullDownRefresh$stop = this.pullDownRefresh.stopTime,
              stopTime = _pullDownRefresh$stop === undefined ? DEFAULT_STOP_TIME : _pullDownRefresh$stop;
  
          setTimeout(function () {
            _this6.scroll.finishPullDown();
            next();
          }, stopTime);
        },
        _afterPullDown: function _afterPullDown(dirty) {
          var _this7 = this;
  
          this.resetPullDownTimer = setTimeout(function () {
            _this7.pullDownStyle = 'top: -' + _this7.pullDownHeight + 'px';
            _this7.beforePullDown = true;
            dirty && _this7.refresh();
          }, this.scroll.options.bounceTime);
        },
        _getPullDownEleHeight: function _getPullDownEleHeight() {
          var _this8 = this;
  
          var pulldown = this.$refs.pulldown.firstChild;
          this.pullDownHeight = (0, _dom.getRect)(pulldown).height;
  
          this.beforePullDown = false;
          this.isPullingDown = true;
          this.$nextTick(function () {
            _this8.pullDownStop = (0, _dom.getRect)(pulldown).height;
  
            _this8.beforePullDown = true;
            _this8.isPullingDown = false;
          });
        }
      },
      components: {
        Loading: _loading2.default,
        Bubble: _bubble2.default
      }
    };
    module.exports = exports['default'];
  });
  
  /***/ }),
  /* 136 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var Component = __webpack_require__(5)(
    /* script */
    __webpack_require__(137),
    /* template */
    __webpack_require__(138),
    /* styles */
    null,
    /* scopeId */
    null,
    /* moduleIdentifier (server only) */
    null
  )
  
  module.exports = Component.exports
  
  
  /***/ }),
  /* 137 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports);
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports);
      global.bubble = mod.exports;
    }
  })(this, function (module, exports) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
    exports.default = {
      props: {
        y: {
          type: Number,
          default: 0
        }
      },
      data: function data() {
        return {
          width: 50,
          height: 80
        };
      },
  
      computed: {
        distance: function distance() {
          return Math.max(0, Math.min(this.y * this.ratio, this.maxDistance));
        },
        style: function style() {
          return 'width:' + this.width / this.ratio + 'px;height:' + this.height / this.ratio + 'px';
        }
      },
      mounted: function mounted() {
        this.ratio = window.devicePixelRatio;
        this.width *= this.ratio;
        this.height *= this.ratio;
        this.initRadius = 18 * this.ratio;
        this.minHeadRadius = 12 * this.ratio;
        this.minTailRadius = 5 * this.ratio;
        this.initArrowRadius = 10 * this.ratio;
        this.minArrowRadius = 6 * this.ratio;
        this.arrowWidth = 3 * this.ratio;
        this.maxDistance = 40 * this.ratio;
        this.initCenterX = 25 * this.ratio;
        this.initCenterY = 25 * this.ratio;
        this.headCenter = {
          x: this.initCenterX,
          y: this.initCenterY
        };
        this._draw();
      },
  
      methods: {
        _draw: function _draw() {
          var bubble = this.$refs.bubble;
          var ctx = bubble.getContext('2d');
          ctx.clearRect(0, 0, bubble.width, bubble.height);
  
          this._drawBubble(ctx);
  
          this._drawArrow(ctx);
        },
        _drawBubble: function _drawBubble(ctx) {
          ctx.save();
          ctx.beginPath();
  
          var rate = this.distance / this.maxDistance;
          var headRadius = this.initRadius - (this.initRadius - this.minHeadRadius) * rate;
  
          this.headCenter.y = this.initCenterY - (this.initRadius - this.minHeadRadius) * rate;
  
          ctx.arc(this.headCenter.x, this.headCenter.y, headRadius, 0, Math.PI, true);
  
          var tailRadius = this.initRadius - (this.initRadius - this.minTailRadius) * rate;
          var tailCenter = {
            x: this.headCenter.x,
            y: this.headCenter.y + this.distance
          };
  
          var tailPointL = {
            x: tailCenter.x - tailRadius,
            y: tailCenter.y
          };
          var controlPointL = {
            x: tailPointL.x,
            y: tailPointL.y - this.distance / 2
          };
  
          ctx.quadraticCurveTo(controlPointL.x, controlPointL.y, tailPointL.x, tailPointL.y);
  
          ctx.arc(tailCenter.x, tailCenter.y, tailRadius, Math.PI, 0, true);
  
          var headPointR = {
            x: this.headCenter.x + headRadius,
            y: this.headCenter.y
          };
          var controlPointR = {
            x: tailCenter.x + tailRadius,
            y: headPointR.y + this.distance / 2
          };
          ctx.quadraticCurveTo(controlPointR.x, controlPointR.y, headPointR.x, headPointR.y);
  
          ctx.fillStyle = 'rgb(170,170,170)';
          ctx.fill();
          ctx.strokeStyle = 'rgb(153,153,153)';
          ctx.stroke();
          ctx.restore();
        },
        _drawArrow: function _drawArrow(ctx) {
          ctx.save();
          ctx.beginPath();
  
          var rate = this.distance / this.maxDistance;
          var arrowRadius = this.initArrowRadius - (this.initArrowRadius - this.minArrowRadius) * rate;
  
          ctx.arc(this.headCenter.x, this.headCenter.y, arrowRadius - (this.arrowWidth - rate), -Math.PI / 2, 0, true);
  
          ctx.arc(this.headCenter.x, this.headCenter.y, arrowRadius, 0, Math.PI * 3 / 2, false);
  
          ctx.lineTo(this.headCenter.x, this.headCenter.y - arrowRadius - this.arrowWidth / 2 + rate);
          ctx.lineTo(this.headCenter.x + this.arrowWidth * 2 - rate * 2, this.headCenter.y - arrowRadius + this.arrowWidth / 2);
  
          ctx.lineTo(this.headCenter.x, this.headCenter.y - arrowRadius + this.arrowWidth * 3 / 2 - rate);
  
          ctx.fillStyle = 'rgb(255,255,255)';
          ctx.fill();
          ctx.strokeStyle = 'rgb(170,170,170)';
          ctx.stroke();
          ctx.restore();
        }
      },
      watch: {
        y: function y() {
          this._draw();
        }
      }
    };
    module.exports = exports['default'];
  });
  
  /***/ }),
  /* 138 */
  /***/ (function(module, exports) {
  
  module.exports={render:function (){var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;
    return _c('canvas', {
      ref: "bubble",
      style: (_vm.style),
      attrs: {
        "width": _vm.width,
        "height": _vm.height
      }
    })
  },staticRenderFns: []}
  
  /***/ }),
  /* 139 */
  /***/ (function(module, exports) {
  
  module.exports={render:function (){var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;
    return _c('div', {
      ref: "wrapper",
      staticClass: "cube-scroll-wrapper"
    }, [_c('div', {
      staticClass: "cube-scroll-content"
    }, [_c('div', {
      ref: "listWrapper",
      staticClass: "cube-scroll-list-wrapper"
    }, [_vm._t("default", [_c('ul', {
      staticClass: "cube-scroll-list"
    }, _vm._l((_vm.data), function(item, index) {
      return _c('li', {
        key: index,
        staticClass: "cube-scroll-item border-bottom-1px",
        on: {
          "click": function($event) {
            _vm.clickItem(item)
          }
        }
      }, [_vm._v(_vm._s(item))])
    }))])], 2), _vm._v(" "), _vm._t("pullup", [(_vm.pullUpLoad) ? _c('div', {
      staticClass: "cube-pullup-wrapper"
    }, [(!_vm.isPullUpLoad) ? _c('div', {
      staticClass: "before-trigger"
    }, [_c('span', [_vm._v(_vm._s(_vm.pullUpTxt))])]) : _c('div', {
      staticClass: "after-trigger"
    }, [_c('loading')], 1)]) : _vm._e()], {
      pullUpLoad: _vm.pullUpLoad,
      isPullUpLoad: _vm.isPullUpLoad
    })], 2), _vm._v(" "), (_vm.pullDownRefresh) ? _c('div', {
      ref: "pulldown",
      staticClass: "cube-pulldown"
    }, [_vm._t("pulldown", [_c('div', {
      staticClass: "cube-pulldown-wrapper",
      style: (_vm.pullDownStyle)
    }, [_c('div', {
      directives: [{
        name: "show",
        rawName: "v-show",
        value: (_vm.beforePullDown),
        expression: "beforePullDown"
      }],
      staticClass: "before-trigger"
    }, [_c('bubble', {
      staticClass: "bubble",
      attrs: {
        "y": _vm.bubbleY
      }
    })], 1), _vm._v(" "), _c('div', {
      directives: [{
        name: "show",
        rawName: "v-show",
        value: (!_vm.beforePullDown),
        expression: "!beforePullDown"
      }],
      staticClass: "after-trigger"
    }, [_c('div', {
      directives: [{
        name: "show",
        rawName: "v-show",
        value: (_vm.isPullingDown),
        expression: "isPullingDown"
      }],
      staticClass: "loading"
    }, [_c('loading')], 1), _vm._v(" "), _c('div', {
      directives: [{
        name: "show",
        rawName: "v-show",
        value: (!_vm.isPullingDown),
        expression: "!isPullingDown"
      }],
      staticClass: "cube-pulldown-loaded"
    }, [_c('span', [_vm._v(_vm._s(_vm.refreshTxt))])])])])], {
      pullDownRefresh: _vm.pullDownRefresh,
      pullDownStyle: _vm.pullDownStyle,
      beforePullDown: _vm.beforePullDown,
      isPullingDown: _vm.isPullingDown,
      bubbleY: _vm.bubbleY
    })], 2) : _vm._e()])
  },staticRenderFns: []}
  
  /***/ }),
  /* 140 */,
  /* 141 */,
  /* 142 */,
  /* 143 */,
  /* 144 */,
  /* 145 */,
  /* 146 */,
  /* 147 */,
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  /* 149 */,
  /* 150 */,
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  /* 175 */,
  /* 176 */,
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  /* 179 */,
  /* 180 */,
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  /* 182 */,
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  /* 185 */,
  /* 186 */,
  /* 187 */,
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  /* 190 */,
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  /* 193 */,
  /* 194 */,
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  /* 200 */,
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  /* 205 */,
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  /* 210 */,
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  /* 333 */,
  /* 334 */
  /***/ (function(module, exports, __webpack_require__) {
  
  var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
    if (true) {
      !(__WEBPACK_AMD_DEFINE_ARRAY__ = [module, exports, __webpack_require__(129)], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
  				__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
  				(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
  				__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
    } else if (typeof exports !== "undefined") {
      factory(module, exports, require('../../components/scroll/scroll.vue'));
    } else {
      var mod = {
        exports: {}
      };
      factory(mod, mod.exports, global.scroll);
      global.index = mod.exports;
    }
  })(this, function (module, exports, _scroll) {
    'use strict';
  
    Object.defineProperty(exports, "__esModule", {
      value: true
    });
  
    var _scroll2 = _interopRequireDefault(_scroll);
  
    function _interopRequireDefault(obj) {
      return obj && obj.__esModule ? obj : {
        default: obj
      };
    }
  
    _scroll2.default.install = function (Vue) {
      Vue.component(_scroll2.default.name, _scroll2.default);
    };
  
    exports.default = _scroll2.default;
    module.exports = exports['default'];
  });
  
  /***/ })
  /******/ ]);
  });