export interface DefaultsDeep {
    <T1, T2>(a: T1, b: T2): T1 & T2;
    <T1, T2, T3>(a: T1, b: T2, c: T3): T1 & T2 & T3;
    <T1>(a: T1): {
        <T2, T3>(b: T2, c: T3): T1 & T2 & T3;
        <T2>(b: T2): T1 & T2;
    };
    <T>(...args: T[]): T;
}
/**
 * This method is like 'defaults' except that it recursively assigns default properties.
 *
 * @param {...Object} sources
 * @return {Object}
 * @example
 *
 *      defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); //=> { 'a': { 'b': 2, 'c': 3 } }
 */
export declare const defaultsDeep: DefaultsDeep;
export default defaultsDeep;