function_classCallCheck(instance,Constructor){if(!(instanceinstanceofConstructor)){thrownewTypeError("Cannot call a class as a function");}}
function_possibleConstructorReturn(self,call){if(!self){thrownewReferenceError("this hasn't been initialised - super() hasn't been called");}returncall&&(typeofcall==="object"||typeofcall==="function")?call:self;}
function_inherits(subClass,superClass){if(typeofsuperClass!=="function"&&superClass!==null){thrownewTypeError("Super expression must either be null or a function, not "+typeofsuperClass);}subClass.prototype=Object.create(superClass&&superClass.prototype,{constructor:{value:subClass,enumerable:false,writable:true,configurable:true}});if(superClass)Object.setPrototypeOf?Object.setPrototypeOf(subClass,superClass):_defaults(subClass,superClass);}