import { SystemStyleObject } from '@styled-system/css';
import * as styledSystem from 'styled-system';
import { ForwardRefComponent } from './polymorphic';
import { AllSystemProps } from './system-props';
declare const defaultElement = "div";
export declare type SxProp = {
    sx?: SystemStyleObject;
};
export declare type BaseProps = SxProp & AllSystemProps & {
    __css?: SystemStyleObject;
    __systemProps?: styledSystem.styleFn[];
};
declare type BaseComponent = ForwardRefComponent<typeof defaultElement, BaseProps>;
export declare const Base: BaseComponent;
export {};