define("local_treestudyplan/vue-easy-dnd/vue-easy-dnd.esm",["exports","../vue/vue"],(function(_exports,_vue){function_toConsumableArray(arr){returnfunction(arr){if(Array.isArray(arr))return_arrayLikeToArray(arr)}(arr)||function(iter){if("undefined"!=typeofSymbol&&null!=iter[Symbol.iterator]||null!=iter["@@iterator"])returnArray.from(iter)}(arr)||_unsupportedIterableToArray(arr)||function(){thrownewTypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function_typeof(obj){return_typeof="function"==typeofSymbol&&"symbol"==typeofSymbol.iterator?function(obj){returntypeofobj}:function(obj){returnobj&&"function"==typeofSymbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeofobj},_typeof(obj)}function_slicedToArray(arr,i){returnfunction(arr){if(Array.isArray(arr))returnarr}(arr)||function(arr,i){var_i=null==arr?null:"undefined"!=typeofSymbol&&arr[Symbol.iterator]||arr["@@iterator"];if(null==_i)return;var_s,_e,_arr=[],_n=!0,_d=!1;try{for(_i=_i.call(arr);!(_n=(_s=_i.next()).done)&&(_arr.push(_s.value),!i||_arr.length!==i);_n=!0);}catch(err){_d=!0,_e=err}finally{try{_n||null==_i.return||_i.return()}finally{if(_d)throw_e}}return_arr}(arr,i)||_unsupportedIterableToArray(arr,i)||function(){thrownewTypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function_createForOfIteratorHelper(o,allowArrayLike){varit="undefined"!=typeofSymbol&&o[Symbol.iterator]||o["@@iterator"];if(!it){if(Array.isArray(o)||(it=_unsupportedIterableToArray(o))||allowArrayLike&&o&&"number"==typeofo.length){it&&(o=it);vari=0,F=function(){};return{s:F,n:function(){returni>=o.length?{done:!0}:{done:!1,value:o[i++]}},e:function(_e2){throw_e2},f:F}}thrownewTypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}varerr,normalCompletion=!0,didErr=!1;return{s:function(){it=it.call(o)},n:function(){varstep=it.next();returnnormalCompletion=step.done,step},e:function(_e3){didErr=!0,err=_e3},f:function(){try{normalCompletion||null==it.return||it.return()}finally{if(didErr)throwerr}}}}function_unsupportedIterableToArray(o,minLen){if(o){if("string"==typeofo)return_arrayLikeToArray(o,minLen);varn=Object.prototype.toString.call(o).slice(8,-1);return"Object"===n&&o.constructor&&(n=o.constructor.name),"Map"===n||"Set"===n?Array.from(o):"Arguments"===n||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)?_arrayLikeToArray(o,minLen):void0}}function_arrayLikeToArray(arr,len){(null==len||len>arr.length)&&(len=arr.length);for(vari=0,arr2=newArray(len);i<len;i++)arr2[i]=arr[i];returnarr2}functionownKeys(object,enumerableOnly){varkeys=Object.keys(object);if(Object.getOwnPropertySymbols){varsymbols=Object.getOwnPropertySymbols(object);enumerableOnly&&(symbols=symbols.filter((function(sym){returnObject.getOwnPropertyDescriptor(object,sym).enumerable}))),keys.push.apply(keys,symbols)}returnkeys}function_objectSpread(target){for(vari=1;i<arguments.length;i++){varsource=null!=arguments[i]?arguments[i]:{};i%2?ownKeys(Object(source),!0).forEach((function(key){_defineProperty(target,key,source[key])})):Object.getOwnPropertyDescriptors?Object.defineProperties(target,Object.getOwnPropertyDescriptors(source)):ownKeys(Object(source)).forEach((function(key){Object.defineProperty(target,key,Object.getOwnPropertyDescriptor(source,key))}))}returntarget}function_classCallCheck(instance,Constructor){if(!(instanceinstanceofConstructor))thrownewTypeError("Cannot call a class as a function")}function_defineProperties(target,props){for(vari=0;i<props.length;i++){vardescriptor=props[i];descriptor.enumerable=descriptor.enumerable||!1,descriptor.configurable=!0,"value"indescriptor&&(descriptor.writable=!0),Object.defineProperty(target,descriptor.key,descriptor)}}function_createClass(Constructor,protoProps,staticProps){returnprotoProps&&_definePro