import { ActionTypes, Breakpoint, State } from '../types/index';
export declare function initialBetween(begin: Breakpoint | number, end: Breakpoint | number): string;
export declare function initialDown(key: Breakpoint | number): string;
export declare function initialOnly(key: Breakpoint): string;
export declare function initialUp(key: Breakpoint | number): string;
export declare function initialWidth(key: Breakpoint): number;
export declare function initialGetContrastText(background: string): string;
export declare function initialCreate(): string;
export declare function initialGetAutoHeightDuration(height: number): number;
export declare function initialPxToRm(size: number): string;
export declare const initialState: State;
export declare function reducer(state: State, action: ActionTypes): State;