export type PickPredicate = (key: number | string | symbol, value: any) => boolean;
export type PickResult<T> = Partial<T> | null | undefined;
/**
 * A function that reduces an object to keys and values that match a predicate.
 *
 * @param predicate -
 *        The predicate to match the key and value against.
 * @param target -
 *        The object to reduce.
 *
 * @returns
 *        A reduced object that only contains key-value pairs that match
 *        the predicate.
 */
export declare function pickBy<T = unknown>(predicate: PickPredicate, target: object): PickResult<T>;
/**
 * An alias to pickBy with a predicate of (_, v) =&gt; v != null.
 *
 * @param target -
 *        The target object to reduce.
 *
 * @returns
 *        The reduced object.
 */
export declare function pickDefined<T = unknown>(target: object): PickResult<T>;
/**
 * An alias to pickBy((k) =&gt; k.startsWith('data-')).
 *
 * @param target -
 *        The target object to reduce.
 *
 * @returns
 *        The reduced object.
 */
export declare function pickDataAttributes<T = unknown>(target: object): PickResult<T>;
/**
 * An alias to pickBy((k) =&gt; k.startsWith('on')).
 *
 * @param target -
 *        The target object to reduce.
 *
 * @returns
 *        The reduced object.
 */
export declare function pickEvents<T = unknown>(target: object): PickResult<T>;