bk-magic-vue/lib/cascade.js

基于蓝鲸 Magicbox 和 Vue 的前端组件库

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('vue'), require('bk-magic-vue/lib/locale')) :
  typeof define === 'function' && define.amd ? define(['exports', 'vue', 'bk-magic-vue/lib/locale'], factory) :
  (global = global || self, factory(global.library = {}, global.Vue, global.locale));
}(this, function (exports, Vue, locale) { 'use strict';

  Vue = Vue && Vue.hasOwnProperty('default') ? Vue['default'] : Vue;
  locale = locale && locale.hasOwnProperty('default') ? locale['default'] : locale;

  function _regeneratorRuntime() {
    _regeneratorRuntime = function () {
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      Op = Object.prototype,
      hasOwn = Op.hasOwnProperty,
      defineProperty = Object.defineProperty || function (obj, key, desc) {
        obj[key] = desc.value;
      },
      $Symbol = "function" == typeof Symbol ? Symbol : {},
      iteratorSymbol = $Symbol.iterator || "@@iterator",
      asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator",
      toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
    function define(obj, key, value) {
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        configurable: !0,
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        generator = Object.create(protoGenerator.prototype),
        context = new Context(tryLocsList || []);
      return defineProperty(generator, "_invoke", {
        value: makeInvokeMethod(innerFn, self, context)
      }), generator;
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    function tryCatch(fn, obj, arg) {
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          type: "normal",
          arg: fn.call(obj, arg)
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      } catch (err) {
        return {
          type: "throw",
          arg: err
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      }
    }
    exports.wrap = wrap;
    var ContinueSentinel = {};
    function Generator() {}
    function GeneratorFunction() {}
    function GeneratorFunctionPrototype() {}
    var IteratorPrototype = {};
    define(IteratorPrototype, iteratorSymbol, function () {
      return this;
    });
    var getProto = Object.getPrototypeOf,
      NativeIteratorPrototype = getProto && getProto(getProto(values([])));
    NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol) && (IteratorPrototype = NativeIteratorPrototype);
    var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
    function defineIteratorMethods(prototype) {
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        define(prototype, method, function (arg) {
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            invoke("throw", err, resolve, reject);
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          state = "executing";
          var record = tryCatch(innerFn, self, context);
          if ("normal" === record.type) {
            if (state = context.done ? "completed" : "suspendedYield", record.arg === ContinueSentinel) continue;
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              value: record.arg,
              done: context.done
            };
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          "throw" === record.type && (state = "completed", context.method = "throw", context.arg = record.arg);
        }
      };
    }
    function maybeInvokeDelegate(delegate, context) {
      var methodName = context.method,
        method = delegate.iterator[methodName];
      if (undefined === method) return context.delegate = null, "throw" === methodName && delegate.iterator.return && (context.method = "return", context.arg = undefined, maybeInvokeDelegate(delegate, context), "throw" === context.method) || "return" !== methodName && (context.method = "throw", context.arg = new TypeError("The iterator does not provide a '" + methodName + "' method")), ContinueSentinel;
      var record = tryCatch(method, delegate.iterator, context.arg);
      if ("throw" === record.type) return context.method = "throw", context.arg = record.arg, context.delegate = null, ContinueSentinel;
      var info = record.arg;
      return info ? info.done ? (context[delegate.resultName] = info.value, context.next = delegate.nextLoc, "return" !== context.method && (context.method = "next", context.arg = undefined), context.delegate = null, ContinueSentinel) : info : (context.method = "throw", context.arg = new TypeError("iterator result is not an object"), context.delegate = null, ContinueSentinel);
    }
    function pushTryEntry(locs) {
      var entry = {
        tryLoc: locs[0]
      };
      1 in locs && (entry.catchLoc = locs[1]), 2 in locs && (entry.finallyLoc = locs[2], entry.afterLoc = locs[3]), this.tryEntries.push(entry);
    }
    function resetTryEntry(entry) {
      var record = entry.completion || {};
      record.type = "normal", delete record.arg, entry.completion = record;
    }
    function Context(tryLocsList) {
      this.tryEntries = [{
        tryLoc: "root"
      }], tryLocsList.forEach(pushTryEntry, this), this.reset(!0);
    }
    function values(iterable) {
      if (iterable) {
        var iteratorMethod = iterable[iteratorSymbol];
        if (iteratorMethod) return iteratorMethod.call(iterable);
        if ("function" == typeof iterable.next) return iterable;
        if (!isNaN(iterable.length)) {
          var i = -1,
            next = function next() {
              for (; ++i < iterable.length;) if (hasOwn.call(iterable, i)) return next.value = iterable[i], next.done = !1, next;
              return next.value = undefined, next.done = !0, next;
            };
          return next.next = next;
        }
      }
      return {
        next: doneResult
      };
    }
    function doneResult() {
      return {
        value: undefined,
        done: !0
      };
    }
    return GeneratorFunction.prototype = GeneratorFunctionPrototype, defineProperty(Gp, "constructor", {
      value: GeneratorFunctionPrototype,
      configurable: !0
    }), defineProperty(GeneratorFunctionPrototype, "constructor", {
      value: GeneratorFunction,
      configurable: !0
    }), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction"), exports.isGeneratorFunction = function (genFun) {
      var ctor = "function" == typeof genFun && genFun.constructor;
      return !!ctor && (ctor === GeneratorFunction || "GeneratorFunction" === (ctor.displayName || ctor.name));
    }, exports.mark = function (genFun) {
      return Object.setPrototypeOf ? Object.setPrototypeOf(genFun, GeneratorFunctionPrototype) : (genFun.__proto__ = GeneratorFunctionPrototype, define(genFun, toStringTagSymbol, "GeneratorFunction")), genFun.prototype = Object.create(Gp), genFun;
    }, exports.awrap = function (arg) {
      return {
        __await: arg
      };
    }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
      return this;
    }), exports.AsyncIterator = AsyncIterator, exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {
      void 0 === PromiseImpl && (PromiseImpl = Promise);
      var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
      return exports.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {
        return result.done ? result.value : iter.next();
      });
    }, defineIteratorMethods(Gp), define(Gp, toStringTagSymbol, "Generator"), define(Gp, iteratorSymbol, function () {
      return this;
    }), define(Gp, "toString", function () {
      return "[object Generator]";
    }), exports.keys = function (val) {
      var object = Object(val),
        keys = [];
      for (var key in object) keys.push(key);
      return keys.reverse(), function next() {
        for (; keys.length;) {
          var key = keys.pop();
          if (key in object) return next.value = key, next.done = !1, next;
        }
        return next.done = !0, next;
      };
    }, exports.values = values, Context.prototype = {
      constructor: Context,
      reset: function (skipTempReset) {
        if (this.prev = 0, this.next = 0, this.sent = this._sent = undefined, this.done = !1, this.delegate = null, this.method = "next", this.arg = undefined, this.tryEntries.forEach(resetTryEntry), !skipTempReset) for (var name in this) "t" === name.charAt(0) && hasOwn.call(this, name) && !isNaN(+name.slice(1)) && (this[name] = undefined);
      },
      stop: function () {
        this.done = !0;
        var rootRecord = this.tryEntries[0].completion;
        if ("throw" === rootRecord.type) throw rootRecord.arg;
        return this.rval;
      },
      dispatchException: function (exception) {
        if (this.done) throw exception;
        var context = this;
        function handle(loc, caught) {
          return record.type = "throw", record.arg = exception, context.next = loc, caught && (context.method = "next", context.arg = undefined), !!caught;
        }
        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
          var entry = this.tryEntries[i],
            record = entry.completion;
          if ("root" === entry.tryLoc) return handle("end");
          if (entry.tryLoc <= this.prev) {
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              hasFinally = hasOwn.call(entry, "finallyLoc");
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              if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);
              if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
            } else if (hasCatch) {
              if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);
            } else {
              if (!hasFinally) throw new Error("try statement without catch or finally");
              if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
            }
          }
        }
      },
      abrupt: function (type, arg) {
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          var entry = this.tryEntries[i];
          if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
            var finallyEntry = entry;
            break;
          }
        }
        finallyEntry && ("break" === type || "continue" === type) && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc && (finallyEntry = null);
        var record = finallyEntry ? finallyEntry.completion : {};
        return record.type = type, record.arg = arg, finallyEntry ? (this.method = "next", this.next = finallyEntry.finallyLoc, ContinueSentinel) : this.complete(record);
      },
      complete: function (record, afterLoc) {
        if ("throw" === record.type) throw record.arg;
        return "break" === record.type || "continue" === record.type ? this.next = record.arg : "return" === record.type ? (this.rval = this.arg = record.arg, this.method = "return", this.next = "end") : "normal" === record.type && afterLoc && (this.next = afterLoc), ContinueSentinel;
      },
      finish: function (finallyLoc) {
        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
          var entry = this.tryEntries[i];
          if (entry.finallyLoc === finallyLoc) return this.complete(entry.completion, entry.afterLoc), resetTryEntry(entry), ContinueSentinel;
        }
      },
      catch: function (tryLoc) {
        for (var i = this.tryEntries.length - 1; i >= 0; --i) {
          var entry = this.tryEntries[i];
          if (entry.tryLoc === tryLoc) {
            var record = entry.completion;
            if ("throw" === record.type) {
              var thrown = record.arg;
              resetTryEntry(entry);
            }
            return thrown;
          }
        }
        throw new Error("illegal catch attempt");
      },
      delegateYield: function (iterable, resultName, nextLoc) {
        return this.delegate = {
          iterator: values(iterable),
          resultName: resultName,
          nextLoc: nextLoc
        }, "next" === this.method && (this.arg = undefined), ContinueSentinel;
      }
    }, exports;
  }
  function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
    try {
      var info = gen[key](arg);
      var value = info.value;
    } catch (error) {
      reject(error);
      return;
    }
    if (info.done) {
      resolve(value);
    } else {
      Promise.resolve(value).then(_next, _throw);
    }
  }
  function _asyncToGenerator(fn) {
    return function () {
      var self = this,
        args = arguments;
      return new Promise(function (resolve, reject) {
        var gen = fn.apply(self, args);
        function _next(value) {
          asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
        }
        function _throw(err) {
          asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
        }
        _next(undefined);
      });
    };
  }
  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }
  function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor);
    }
  }
  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    Object.defineProperty(Constructor, "prototype", {
      writable: false
    });
    return Constructor;
  }
  function _defineProperty(obj, key, value) {
    key = _toPropertyKey(key);
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }
    return obj;
  }
  function _extends() {
    _extends = Object.assign ? Object.assign.bind() : function (target) {
      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];
        for (var key in source) {
          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }
      return target;
    };
    return _extends.apply(this, arguments);
  }
  function _toConsumableArray(arr) {
    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
  }
  function _arrayWithoutHoles(arr) {
    if (Array.isArray(arr)) return _arrayLikeToArray(arr);
  }
  function _iterableToArray(iter) {
    if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter);
  }
  function _unsupportedIterableToArray(o, minLen) {
    if (!o) return;
    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
    var n = Object.prototype.toString.call(o).slice(8, -1);
    if (n === "Object" && o.constructor) n = o.constructor.name;
    if (n === "Map" || n === "Set") return Array.from(o);
    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
  }
  function _arrayLikeToArray(arr, len) {
    if (len == null || len > arr.length) len = arr.length;
    for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
    return arr2;
  }
  function _nonIterableSpread() {
    throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
  }
  function _createForOfIteratorHelper(o, allowArrayLike) {
    var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
    if (!it) {
      if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
        if (it) o = it;
        var i = 0;
        var F = function () {};
        return {
          s: F,
          n: function () {
            if (i >= o.length) return {
              done: true
            };
            return {
              done: false,
              value: o[i++]
            };
          },
          e: function (e) {
            throw e;
          },
          f: F
        };
      }
      throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
    }
    var normalCompletion = true,
      didErr = false,
      err;
    return {
      s: function () {
        it = it.call(o);
      },
      n: function () {
        var step = it.next();
        normalCompletion = step.done;
        return step;
      },
      e: function (e) {
        didErr = true;
        err = e;
      },
      f: function () {
        try {
          if (!normalCompletion && it.return != null) it.return();
        } finally {
          if (didErr) throw err;
        }
      }
    };
  }
  function _toPrimitive(input, hint) {
    if (typeof input !== "object" || input === null) return input;
    var prim = input[Symbol.toPrimitive];
    if (prim !== undefined) {
      var res = prim.call(input, hint || "default");
      if (typeof res !== "object") return res;
      throw new TypeError("@@toPrimitive must return a primitive value.");
    }
    return (hint === "string" ? String : Number)(input);
  }
  function _toPropertyKey(arg) {
    var key = _toPrimitive(arg, "string");
    return typeof key === "symbol" ? key : String(key);
  }

  function createCommonjsModule(fn, module) {
  	return module = { exports: {} }, fn(module, module.exports), module.exports;
  }

  var _global = createCommonjsModule(function (module) {
  var global = module.exports = typeof window != 'undefined' && window.Math == Math
    ? window : typeof self != 'undefined' && self.Math == Math ? self
    : Function('return this')();
  if (typeof __g == 'number') __g = global;
  });

  var _core = createCommonjsModule(function (module) {
  var core = module.exports = { version: '2.6.12' };
  if (typeof __e == 'number') __e = core;
  });
  var _core_1 = _core.version;

  var _aFunction = function (it) {
    if (typeof it != 'function') throw TypeError(it + ' is not a function!');
    return it;
  };

  var _ctx = 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 () {
      return fn.apply(that, arguments);
    };
  };

  var _isObject = function (it) {
    return typeof it === 'object' ? it !== null : typeof it === 'function';
  };

  var _anObject = function (it) {
    if (!_isObject(it)) throw TypeError(it + ' is not an object!');
    return it;
  };

  var _fails = function (exec) {
    try {
      return !!exec();
    } catch (e) {
      return true;
    }
  };

  var _descriptors = !_fails(function () {
    return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
  });

  var document$1 = _global.document;
  var is = _isObject(document$1) && _isObject(document$1.createElement);
  var _domCreate = function (it) {
    return is ? document$1.createElement(it) : {};
  };

  var _ie8DomDefine = !_descriptors && !_fails(function () {
    return Object.defineProperty(_domCreate('div'), 'a', { get: function () { return 7; } }).a != 7;
  });

  var _toPrimitive$1 = 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");
  };

  var dP = Object.defineProperty;
  var f = _descriptors ? Object.defineProperty : function defineProperty(O, P, Attributes) {
    _anObject(O);
    P = _toPrimitive$1(P, true);
    _anObject(Attributes);
    if (_ie8DomDefine) try {
      return dP(O, P, Attributes);
    } catch (e) {  }
    if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');
    if ('value' in Attributes) O[P] = Attributes.value;
    return O;
  };
  var _objectDp = {
  	f: f
  };

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

  var _hide = _descriptors ? function (object, key, value) {
    return _objectDp.f(object, key, _propertyDesc(1, value));
  } : function (object, key, value) {
    object[key] = value;
    return object;
  };

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

  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) {
      own = !IS_FORCED && target && target[key] !== undefined;
      if (own && _has(exports, key)) continue;
      out = own ? target[key] : source[key];
      exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]
      : IS_BIND && own ? _ctx(out, _global)
      : 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;
      })(out) : IS_PROTO && typeof out == 'function' ? _ctx(Function.call, out) : out;
      if (IS_PROTO) {
        (exports.virtual || (exports.virtual = {}))[key] = out;
        if (type & $export.R && expProto && !expProto[key]) _hide(expProto, key, out);
      }
    }
  };
  $export.F = 1;
  $export.G = 2;
  $export.S = 4;
  $export.P = 8;
  $export.B = 16;
  $export.W = 32;
  $export.U = 64;
  $export.R = 128;
  var _export = $export;

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

  var _isArray = Array.isArray || function isArray(arg) {
    return _cof(arg) == 'Array';
  };

  _export(_export.S, 'Array', { isArray: _isArray });

  var isArray = _core.Array.isArray;

  var isArray$1 = isArray;

  var $JSON = _core.JSON || (_core.JSON = { stringify: JSON.stringify });
  var stringify = function stringify(it) {
    return $JSON.stringify.apply($JSON, arguments);
  };

  var stringify$1 = stringify;

  var _defined = function (it) {
    if (it == undefined) throw TypeError("Can't call method on  " + it);
    return it;
  };

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

  var space = '[' + _stringWs + ']';
  var non = '\u200b\u0085';
  var ltrim = RegExp('^' + space + space + '*');
  var rtrim = RegExp(space + space + '*$');
  var exporter = function (KEY, exec, ALIAS) {
    var exp = {};
    var FORCE = _fails(function () {
      return !!_stringWs[KEY]() || non[KEY]() != non;
    });
    var fn = exp[KEY] = FORCE ? exec(trim) : _stringWs[KEY];
    if (ALIAS) exp[ALIAS] = fn;
    _export(_export.P + _export.F * FORCE, 'String', exp);
  };
  var trim = exporter.trim = function (string, TYPE) {
    string = String(_defined(string));
    if (TYPE & 1) string = string.replace(ltrim, '');
    if (TYPE & 2) string = string.replace(rtrim, '');
    return string;
  };
  var _stringTrim = exporter;

  var $parseInt = _global.parseInt;
  var $trim = _stringTrim.trim;
  var hex = /^[-+]?0[xX]/;
  var _parseInt = $parseInt(_stringWs + '08') !== 8 || $parseInt(_stringWs + '0x16') !== 22 ? function parseInt(str, radix) {
    var string = $trim(String(str), 3);
    return $parseInt(string, (radix >>> 0) || (hex.test(string) ? 16 : 10));
  } : $parseInt;

  _export(_export.G + _export.F * (parseInt != _parseInt), { parseInt: _parseInt });

  var _parseInt$1 = _core.parseInt;

  var _parseInt$2 = _parseInt$1;

  var _toObject = function (it) {
    return Object(_defined(it));
  };

  var _iobject = Object('z').propertyIsEnumerable(0) ? Object : function (it) {
    return _cof(it) == 'String' ? it.split('') : Object(it);
  };

  var _toIobject = function (it) {
    return _iobject(_defined(it));
  };

  var ceil = Math.ceil;
  var floor = Math.floor;
  var _toInteger = function (it) {
    return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);
  };

  var min = Math.min;
  var _toLength = function (it) {
    return it > 0 ? min(_toInteger(it), 0x1fffffffffffff) : 0;
  };

  var max = Math.max;
  var min$1 = Math.min;
  var _toAbsoluteIndex = function (index, length) {
    index = _toInteger(index);
    return index < 0 ? max(index + length, 0) : min$1(index, length);
  };

  var _arrayIncludes = function (IS_INCLUDES) {
    return function ($this, el, fromIndex) {
      var O = _toIobject($this);
      var length = _toLength(O.length);
      var index = _toAbsoluteIndex(fromIndex, length);
      var value;
      if (IS_INCLUDES && el != el) while (length > index) {
        value = O[index++];
        if (value != value) return true;
      } else for (;length > index; index++) if (IS_INCLUDES || index in O) {
        if (O[index] === el) return IS_INCLUDES || index || 0;
      } return !IS_INCLUDES && -1;
    };
  };

  var _library = true;

  var _shared = createCommonjsModule(function (module) {
  var SHARED = '__core-js_shared__';
  var store = _global[SHARED] || (_global[SHARED] = {});
  (module.exports = function (key, value) {
    return store[key] || (store[key] = value !== undefined ? value : {});
  })('versions', []).push({
    version: _core.version,
    mode:  'pure' ,
    copyright: '© 2020 Denis Pushkarev (zloirock.ru)'
  });
  });

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

  var shared = _shared('keys');
  var _sharedKey = function (key) {
    return shared[key] || (shared[key] = _uid(key));
  };

  var arrayIndexOf = _arrayIncludes(false);
  var IE_PROTO = _sharedKey('IE_PROTO');
  var _objectKeysInternal = 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);
    while (names.length > i) if (_has(O, key = names[i++])) {
      ~arrayIndexOf(result, key) || result.push(key);
    }
    return result;
  };

  var _enumBugKeys = (
    'constructor,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,toLocaleString,toString,valueOf'
  ).split(',');

  var _objectKeys = Object.keys || function keys(O) {
    return _objectKeysInternal(O, _enumBugKeys);
  };

  var _objectSap = function (KEY, exec) {
    var fn = (_core.Object || {})[KEY] || Object[KEY];
    var exp = {};
    exp[KEY] = exec(fn);
    _export(_export.S + _export.F * _fails(function () { fn(1); }), 'Object', exp);
  };

  _objectSap('keys', function () {
    return function keys(it) {
      return _objectKeys(_toObject(it));
    };
  });

  var keys = _core.Object.keys;

  var keys$1 = keys;

  var f$1 = Object.getOwnPropertySymbols;
  var _objectGops = {
  	f: f$1
  };

  var f$2 = {}.propertyIsEnumerable;
  var _objectPie = {
  	f: f$2
  };

  var $assign = Object.assign;
  var _objectAssign = !$assign || _fails(function () {
    var A = {};
    var B = {};
    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) {
    var T = _toObject(target);
    var aLen = arguments.length;
    var index = 1;
    var getSymbols = _objectGops.f;
    var isEnum = _objectPie.f;
    while (aLen > index) {
      var S = _iobject(arguments[index++]);
      var keys = getSymbols ? _objectKeys(S).concat(getSymbols(S)) : _objectKeys(S);
      var length = keys.length;
      var j = 0;
      var key;
      while (length > j) {
        key = keys[j++];
        if (!_descriptors || isEnum.call(S, key)) T[key] = S[key];
      }
    } return T;
  } : $assign;

  _export(_export.S + _export.F, 'Object', { assign: _objectAssign });

  var assign = _core.Object.assign;

  var assign$1 = assign;

  var $parseFloat = _global.parseFloat;
  var $trim$1 = _stringTrim.trim;
  var _parseFloat = 1 / $parseFloat(_stringWs + '-0') !== -Infinity ? function parseFloat(str) {
    var string = $trim$1(String(str), 3);
    var result = $parseFloat(string);
    return result === 0 && string.charAt(0) == '-' ? -0 : result;
  } : $parseFloat;

  _export(_export.G + _export.F * (parseFloat != _parseFloat), { parseFloat: _parseFloat });

  var _parseFloat$1 = _core.parseFloat;

  var _parseFloat$2 = _parseFloat$1;

  var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
  var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
  var timeoutDuration = 0;
  for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
    if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
      timeoutDuration = 1;
      break;
    }
  }
  function microtaskDebounce(fn) {
    var called = false;
    return function () {
      if (called) {
        return;
      }
      called = true;
      window.Promise.resolve().then(function () {
        called = false;
        fn();
      });
    };
  }
  function taskDebounce(fn) {
    var scheduled = false;
    return function () {
      if (!scheduled) {
        scheduled = true;
        setTimeout(function () {
          scheduled = false;
          fn();
        }, timeoutDuration);
      }
    };
  }
  var supportsMicroTasks = isBrowser && window.Promise;
  var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
  function isFunction(functionToCheck) {
    var getType = {};
    return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
  }
  function getStyleComputedProperty(element, property) {
    if (element.nodeType !== 1) {
      return [];
    }
    var window = element.ownerDocument.defaultView;
    var css = window.getComputedStyle(element, null);
    return property ? css[property] : css;
  }
  function getParentNode(element) {
    if (element.nodeName === 'HTML') {
      return element;
    }
    return element.parentNode || element.host;
  }
  function getScrollParent(element) {
    if (!element) {
      return document.body;
    }
    switch (element.nodeName) {
      case 'HTML':
      case 'BODY':
        return element.ownerDocument.body;
      case '#document':
        return element.body;
    }
    var _getStyleComputedProp = getStyleComputedProperty(element),
      overflow = _getStyleComputedProp.overflow,
      overflowX = _getStyleComputedProp.overflowX,
      overflowY = _getStyleComputedProp.overflowY;
    if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
      return element;
    }
    return getScrollParent(getParentNode(element));
  }
  var isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);
  var isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);
  function isIE(version) {
    if (version === 11) {
      return isIE11;
    }
    if (version === 10) {
      return isIE10;
    }
    return isIE11 || isIE10;
  }
  function getOffsetParent(element) {
    if (!element) {
      return document.documentElement;
    }
    var noOffsetParent = isIE(10) ? document.body : null;
    var offsetParent = element.offsetParent || null;
    while (offsetParent === noOffsetParent && element.nextElementSibling) {
      offsetParent = (element = element.nextElementSibling).offsetParent;
    }
    var nodeName = offsetParent && offsetParent.nodeName;
    if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
      return element ? element.ownerDocument.documentElement : document.documentElement;
    }
    if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
      return getOffsetParent(offsetParent);
    }
    return offsetParent;
  }
  function isOffsetContainer(element) {
    var nodeName = element.nodeName;
    if (nodeName === 'BODY') {
      return false;
    }
    return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
  }
  function getRoot(node) {
    if (node.parentNode !== null) {
      return getRoot(node.parentNode);
    }
    return node;
  }
  function findCommonOffsetParent(element1, element2) {
    if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
      return document.documentElement;
    }
    var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
    var start = order ? element1 : element2;
    var end = order ? element2 : element1;
    var range = document.createRange();
    range.setStart(start, 0);
    range.setEnd(end, 0);
    var commonAncestorContainer = range.commonAncestorContainer;
    if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
      if (isOffsetContainer(commonAncestorContainer)) {
        return commonAncestorContainer;
      }
      return getOffsetParent(commonAncestorContainer);
    }
    var element1root = getRoot(element1);
    if (element1root.host) {
      return findCommonOffsetParent(element1root.host, element2);
    } else {
      return findCommonOffsetParent(element1, getRoot(element2).host);
    }
  }
  function getScroll(element) {
    var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
    var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
    var nodeName = element.nodeName;
    if (nodeName === 'BODY' || nodeName === 'HTML') {
      var html = element.ownerDocument.documentElement;
      var scrollingElement = element.ownerDocument.scrollingElement || html;
      return scrollingElement[upperSide];
    }
    return element[upperSide];
  }
  function includeScroll(rect, element) {
    var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
    var scrollTop = getScroll(element, 'top');
    var scrollLeft = getScroll(element, 'left');
    var modifier = subtract ? -1 : 1;
    rect.top += scrollTop * modifier;
    rect.bottom += scrollTop * modifier;
    rect.left += scrollLeft * modifier;
    rect.right += scrollLeft * modifier;
    return rect;
  }
  function getBordersSize(styles, axis) {
    var sideA = axis === 'x' ? 'Left' : 'Top';
    var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
    return _parseFloat$2(styles["border".concat(sideA, "Width")], 10) + _parseFloat$2(styles["border".concat(sideB, "Width")], 10);
  }
  function getSize(axis, body, html, computedStyle) {
    return Math.max(body["offset".concat(axis)], body["scroll".concat(axis)], html["client".concat(axis)], html["offset".concat(axis)], html["scroll".concat(axis)], isIE(10) ? _parseInt$2(html["offset".concat(axis)]) + _parseInt$2(computedStyle["margin".concat(axis === 'Height' ? 'Top' : 'Left')]) + _parseInt$2(computedStyle["margin".concat(axis === 'Height' ? 'Bottom' : 'Right')]) : 0);
  }
  function getWindowSizes(document) {
    var body = document.body;
    var html = document.documentElement;
    var computedStyle = isIE(10) && getComputedStyle(html);
    return {
      height: getSize('Height', body, html, computedStyle),
      width: getSize('Width', body, html, computedStyle)
    };
  }
  var _extends$1 = assign$1 || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];
      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }
    return target;
  };
  function getClientRect(offsets) {
    return _extends$1({}, offsets, {
      right: offsets.left + offsets.width,
      bottom: offsets.top + offsets.height
    });
  }
  function getBoundingClientRect(element) {
    var rect = {};
    try {
      if (isIE(10)) {
        rect = element.getBoundingClientRect();
        var scrollTop = getScroll(element, 'top');
        var scrollLeft = getScroll(element, 'left');
        rect.top += scrollTop;
        rect.left += scrollLeft;
        rect.bottom += scrollTop;
        rect.right += scrollLeft;
      } else {
        rect = element.getBoundingClientRect();
      }
    } catch (e) {}
    var result = {
      left: rect.left,
      top: rect.top,
      width: rect.right - rect.left,
      height: rect.bottom - rect.top
    };
    var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};
    var width = sizes.width || element.clientWidth || result.right - result.left;
    var height = sizes.height || element.clientHeight || result.bottom - result.top;
    var horizScrollbar = element.offsetWidth - width;
    var vertScrollbar = element.offsetHeight - height;
    if (horizScrollbar || vertScrollbar) {
      var styles = getStyleComputedProperty(element);
      horizScrollbar -= getBordersSize(styles, 'x');
      vertScrollbar -= getBordersSize(styles, 'y');
      result.width -= horizScrollbar;
      result.height -= vertScrollbar;
    }
    return getClientRect(result);
  }
  function getOffsetRectRelativeToArbitraryNode(children, parent) {
    var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
    var isIE10 = isIE(10);
    var isHTML = parent.nodeName === 'HTML';
    var childrenRect = getBoundingClientRect(children);
    var parentRect = getBoundingClientRect(parent);
    var scrollParent = getScrollParent(children);
    var styles = getStyleComputedProperty(parent);
    var borderTopWidth = _parseFloat$2(styles.borderTopWidth, 10);
    var borderLeftWidth = _parseFloat$2(styles.borderLeftWidth, 10);
    if (fixedPosition && isHTML) {
      parentRect.top = Math.max(parentRect.top, 0);
      parentRect.left = Math.max(parentRect.left, 0);
    }
    var offsets = getClientRect({
      top: childrenRect.top - parentRect.top - borderTopWidth,
      left: childrenRect.left - parentRect.left - borderLeftWidth,
      width: childrenRect.width,
      height: childrenRect.height
    });
    offsets.marginTop = 0;
    offsets.marginLeft = 0;
    if (!isIE10 && isHTML) {
      var marginTop = _parseFloat$2(styles.marginTop, 10);
      var marginLeft = _parseFloat$2(styles.marginLeft, 10);
      offsets.top -= borderTopWidth - marginTop;
      offsets.bottom -= borderTopWidth - marginTop;
      offsets.left -= borderLeftWidth - marginLeft;
      offsets.right -= borderLeftWidth - marginLeft;
      offsets.marginTop = marginTop;
      offsets.marginLeft = marginLeft;
    }
    if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
      offsets = includeScroll(offsets, parent);
    }
    return offsets;
  }
  function getViewportOffsetRectRelativeToArtbitraryNode(element) {
    var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
    var html = element.ownerDocument.documentElement;
    var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
    var width = Math.max(html.clientWidth, window.innerWidth || 0);
    var height = Math.max(html.clientHeight, window.innerHeight || 0);
    var scrollTop = !excludeScroll ? getScroll(html) : 0;
    var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;
    var offset = {
      top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
      left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
      width: width,
      height: height
    };
    return getClientRect(offset);
  }
  function isFixed(element) {
    var nodeName = element.nodeName;
    if (nodeName === 'BODY' || nodeName === 'HTML') {
      return false;
    }
    if (getStyleComputedProperty(element, 'position') === 'fixed') {
      return true;
    }
    var parentNode = getParentNode(element);
    if (!parentNode) {
      return false;
    }
    return isFixed(parentNode);
  }
  function getFixedPositionOffsetParent(element) {
    if (!element || !element.parentElement || isIE()) {
      return document.documentElement;
    }
    var el = element.parentElement;
    while (el && getStyleComputedProperty(el, 'transform') === 'none') {
      el = el.parentElement;
    }
    return el || document.documentElement;
  }
  function getBoundaries(popper, reference, padding, boundariesElement) {
    var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;
    var boundaries = {
      top: 0,
      left: 0
    };
    var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);
    if (boundariesElement === 'viewport') {
      boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);
    } else {
      var boundariesNode;
      if (boundariesElement === 'scrollParent') {
        boundariesNode = getScrollParent(getParentNode(reference));
        if (boundariesNode.nodeName === 'BODY') {
          boundariesNode = popper.ownerDocument.documentElement;
        }
      } else if (boundariesElement === 'window') {
        boundariesNode = popper.ownerDocument.documentElement;
      } else {
        boundariesNode = boundariesElement;
      }
      var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);
      if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
        var _getWindowSizes = getWindowSizes(popper.ownerDocument),
          height = _getWindowSizes.height,
          width = _getWindowSizes.width;
        boundaries.top += offsets.top - offsets.marginTop;
        boundaries.bottom = height + offsets.top;
        boundaries.left += offsets.left - offsets.marginLeft;
        boundaries.right = width + offsets.left;
      } else {
        boundaries = offsets;
      }
    }
    padding = padding || 0;
    var isPaddingNumber = typeof padding === 'number';
    boundaries.left += isPaddingNumber ? padding : padding.left || 0;
    boundaries.top += isPaddingNumber ? padding : padding.top || 0;
    boundaries.right -= isPaddingNumber ? padding : padding.right || 0;
    boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;
    return boundaries;
  }
  function getArea(_ref) {
    var width = _ref.width,
      height = _ref.height;
    return width * height;
  }
  function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
    var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
    if (placement.indexOf('auto') === -1) {
      return placement;
    }
    var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
    var rects = {
      top: {
        width: boundaries.width,
        height: refRect.top - boundaries.top
      },
      right: {
        width: boundaries.right - refRect.right,
        height: boundaries.height
      },
      bottom: {
        width: boundaries.width,
        height: boundaries.bottom - refRect.bottom
      },
      left: {
        width: refRect.left - boundaries.left,
        height: boundaries.height
      }
    };
    var sortedAreas = keys$1(rects).map(function (key) {
      return _extends$1({
        key: key
      }, rects[key], {
        area: getArea(rects[key])
      });
    }).sort(function (a, b) {
      return b.area - a.area;
    });
    var filteredAreas = sortedAreas.filter(function (_ref2) {
      var width = _ref2.width,
        height = _ref2.height;
      return width >= popper.clientWidth && height >= popper.clientHeight;
    });
    var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
    var variation = placement.split('-')[1];
    return computedPlacement + (variation ? "-".concat(variation) : '');
  }
  function getReferenceOffsets(state, popper, reference) {
    var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
    var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, reference);
    return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);
  }
  function getOuterSizes(element) {
    var window = element.ownerDocument.defaultView;
    var styles = window.getComputedStyle(element);
    var x = _parseFloat$2(styles.marginTop || 0) + _parseFloat$2(styles.marginBottom || 0);
    var y = _parseFloat$2(styles.marginLeft || 0) + _parseFloat$2(styles.marginRight || 0);
    var result = {
      width: element.offsetWidth + y,
      height: element.offsetHeight + x
    };
    return result;
  }
  function getOppositePlacement(placement) {
    var hash = {
      left: 'right',
      right: 'left',
      bottom: 'top',
      top: 'bottom'
    };
    return placement.replace(/left|right|bottom|top/g, function (matched) {
      return hash[matched];
    });
  }
  function getPopperOffsets(popper, referenceOffsets, placement) {
    placement = placement.split('-')[0];
    var popperRect = getOuterSizes(popper);
    var popperOffsets = {
      width: popperRect.width,
      height: popperRect.height
    };
    var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
    var mainSide = isHoriz ? 'top' : 'left';
    var secondarySide = isHoriz ? 'left' : 'top';
    var measurement = isHoriz ? 'height' : 'width';
    var secondaryMeasurement = !isHoriz ? 'height' : 'width';
    popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
    if (placement === secondarySide) {
      popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
    } else {
      popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
    }
    return popperOffsets;
  }
  function find(arr, check) {
    if (Array.prototype.find) {
      return arr.find(check);
    }
    return arr.filter(check)[0];
  }
  function