import{constant}from'@iterable-iterator/mapping';constant('ab',1);// ['a', 1] ['b', 1]import{inverse}from'@iterable-iterator/mapping';import{enumerate}from'@iterable-iterator/zip';inverse(enumerate('ab'));// ['a', 0] ['b', 1]// You can convert to and from Object and Mapimport{toObject,fromObject,toMap,fromMap}from'@iterable-iterator/mapping';toObject(mapping)->ObjectfromObject(Object)->mappingtoMap(mapping)->MapfromMap(Map)->mapping