import { UniFlattenOptions } from './type';
/**
 * Flatten an object to single depth.
 * The flattened key is represented with standard
 * javascript object notation.
 *
 * @example
 *
 * flatten({ a: { b: 1 } }) // { "a.b": 1 }
 * flatten({ a: { b: [1] } }) // { "a.b[0]": 1 }
 * flatten({ a: { '?': [1] } }) // { 'a["?"][0]': 1 }
 */
export declare const flatten: <T>(obj: object, options?: UniFlattenOptions) => Record<string, T>;
/**
 * The reverse action of `flatten`. Transform a flattened object to original un-flattened object.
 *
 * @example
 *
 * unflatten({ "a.b": 1 }) // { a: { b: 1 } }
 * unflatten({ "a.b[0]": 1 }) // { a: { b: [1] } }
 * unflatten({ 'a["?"][0]': 1 }) // { a: { '?': [1] } }
 */
export declare const unflatten: <T = any>(obj: object, options?: UniFlattenOptions) => T;