/**
 * Creates a unique ID.
 * @param chars Number of characters. Defaults to 5
 */
export declare function makeId(length?: number): string;
/**
 * Deep merges 2 objects. Nested fields are only merged if they are plain objects or arrays.
 * @param x
 * @param y
 */
export declare function merge<T>(x: Partial<T>, y: Partial<T>): T;