/**
 * returns the indicated property of an object, if it exists.
 *
 * @param object - The object to query
 * @param path - The property name or path to the property
 * @returns The value at `obj[p]`.

 * @example
 * ```
 *   getProp({x: 100}, 'x'); //=> 100
 *   getProp({}, 'x'); //=> undefined
 * ```
 */
export declare function getProp(object: any, path: string): any;
/**
 * assigns the value provided to the key in targetObject.
 * @param path - keys separated by a delimiter.
 * @param obj - object to which value will be assigned
 * @param val - value to be assigned
 *
 * @example
 * ```
 *   targetObject = {};
 *   assignToProp('x.y.z', targetObject, 'foo');
 *   console.log(targetObject); => {x:{y:{z:'foo'}}}
 * ```
 */
export declare function assignToProp(path: any, obj: any, val: any): void;
export declare function deleteProp(path: string, obj: object): void;
/**
 * @param obj - source object
 * @param mapping - key mappings between target and source object structure
 * @example
 * ```
 *   let mapping={ 'a.b': 'x.y.z'}
 *   let obj = {x: {y: {z: 'foo'}}}
 *   formatObject(obj, mapping) => {a:{b:'foo'}}
 * ```
 */
export declare const formatObject: <T>(obj: Record<string, any> | null, mapping: {
    [key: string]: string;
}) => T | null;