import { IBreakpoint, IBreakpointSpec } from '../interfaces';
export declare const breakpointKeys: IBreakpoint[];
declare function up(breakpoints: IBreakpointSpec, key: IBreakpoint | number): string;
declare function down(breakpoints: IBreakpointSpec, key: IBreakpoint | number): string;
declare function between(breakpoints: IBreakpointSpec, start: IBreakpoint, end: IBreakpoint): string;
declare function only(breakpoints: IBreakpointSpec, key: IBreakpoint): string;
declare function width(breakpoints: IBreakpointSpec, key: IBreakpoint): number;
declare const breakpointsUtils: {
    up: typeof up;
    down: typeof down;
    between: typeof between;
    only: typeof only;
    width: typeof width;
};
export default breakpointsUtils;