@rimbu/stream@rimbu/stream/customAppendIterator<T>On this pageclass AppendIterator<T>undocumentedExtends: FastIteratorBase<T>Type parametersNameDescriptionTundocumentedPropertiesappendDoneundocumentedDefinitionappendDone: boolean;itemundocumentedDefinitionreadonly item: OptLazy<T>;sourceundocumentedDefinitionreadonly source: FastIterator<T>;MethodsfastNextundocumentedDefinitionfastNext<O>(otherwise?: OptLazy<O>): T | O;Type parametersNameDescriptionOParametersNameTypeDescriptionotherwiseOptLazy<O>OverridesFastIteratorBase.fastNextnextReturns the next IteratorResult.Definitionnext(): IteratorResult<T>;OverridesFastIterator.next, FastIteratorBase.next