/**
 * Search for all the sub-objects (even deep-nested ones) that have the given key-value pair(filter).
 *
 * @param data - The data on which search is to be performed.
 * @param key - The key of the key-value pair to search.
 * @param value - The value of the key-value pait to search.
 * @returns The list of sub-objects from the given object, having the given key-value pair.
 *
 * @internal
 */
export declare function findByFilter<T>(data: NonNullable<unknown>, key: string, value: string): T[];
/**
 * Searches for the key which has the given value in the given object.
 *
 * @param data - The data on which search is to be performed.
 * @param value - The value to search.
 * @returns The key with the given value.
 *
 * @internal
 */
export declare function findKeyByValue(data: NonNullable<unknown>, value: string): string | undefined;