import { Theme } from './types';
/**
 * Allows for nested scales with shorthand values
 * @example
 * {
 *   colors: {
 *     primary: { __default: '#00f', light: '#33f' }
 *   }
 * }
 * css({ color: 'primary' }); // { color: '#00f' }
 * css({ color: 'primary.light' }) // { color: '#33f' }
 */
export declare const THEME_TW_DEFAULT_KEY = "__default";
/**
 * Extracts value under path from a deeply nested object.
 * Used for Themes, variants and Theme UI style objects.
 * Given a path to object with `__default` key, returns the value under that key.
 *
 * @param obj a theme, variant or style object
 * @param path path separated with dots (`.`)
 * @param fallback default value returned if get(obj, path) is not found
 */
export declare function get(obj: object, path: string | number | undefined, fallback?: unknown, p?: number, undef?: unknown): any;
declare const merge: {
    (a: Theme, b: Theme): Theme;
    all: typeof mergeAll;
};
declare function mergeAll<A, B>(a: A, b: B): A & B;
declare function mergeAll<A, B, C>(a: A, b: B, c: C): A & B & C;
declare function mergeAll<A, B, C, D>(a: A, b: B, c: C, d: D): A & B & C & D;
export { merge };