import { StyledComponent } from '../react';
export declare type Interpolation = string | number | CSSProperties | StyledComponent<any, any>;
export declare type CSSProperties = {
    [key: string]: string | number | CSSProperties;
};
declare type CssFn = (_strings: TemplateStringsArray, ..._exprs: Interpolation[]) => string;
declare const _default: CssFn;
export default _default;