import type { Dictionary, Mapping, MappingConfiguration, ModelIdentifier } from '../types';
export declare function extend<TSource extends Dictionary<TSource>, TDestination extends Dictionary<TDestination>, TExtendSource extends Dictionary<TExtendSource>, TExtendDestination extends Dictionary<TExtendDestination>>(mapping: Mapping<TExtendSource, TExtendDestination>): MappingConfiguration<TSource, TDestination>;
export declare function extend<TSource extends Dictionary<TSource>, TDestination extends Dictionary<TDestination>, TExtendSource extends Dictionary<TExtendSource>, TExtendDestination extends Dictionary<TExtendDestination>>(source: ModelIdentifier<TExtendSource>, destination: ModelIdentifier<TExtendDestination>): MappingConfiguration<TSource, TDestination>;