import { hideVisually } from 'polished';
import { css } from 'styled-components';
export type CSSRules = ReturnType<typeof css>;
export interface Helpers {
    addValues(first: string, second: string): string;
    createRGBA(color: string, alpha: number): string;
    remCalc(value: string | number): string;
    emCalc(value: string | number): string;
    listReset: CSSRules;
    hideVisually: typeof hideVisually;
}
export declare const addValues: (first: string, second: string) => string;
/**
 * Creates and rgba color giving a hex and an amount
 *
 * @param color hex color
 * @param alpha number between 0 and 1
 */
export declare const createRGBA: (color: string, alpha: number) => string;
export declare const remCalc: (value: string | number) => string;
export declare const emCalc: (value: string | number) => string;
export declare const listReset: import("styled-components").FlattenSimpleInterpolation;
export { hideVisually } from 'polished';
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