import { default as React } from 'react';
export type As<Props = Record<string, unknown>> = React.ElementType<Props>;
export type PropsOf<T extends As> = React.ComponentPropsWithoutRef<T> & {
    as: T;
};
export type Placement = 'bottom-end' | 'bottom-start' | 'top-end' | 'top-start' | 'end-bottom' | 'end-top';
export declare function debugWarning(text: string): void;
type Names = string | undefined | null | boolean;
/**
 * Utility for conditionally merging classNames together.
 * @example
 * classNames('foo', 'bar'); => 'foo bar'
 * @example
 * classnames(false && 'foo', 'bar'); => 'bar'
 */
export declare function classNames(...names: Names[]): string;
export declare function getStyleFromPlacement(placement: Placement): {
    left: string;
    top: string;
    bottom?: undefined;
    right?: undefined;
} | {
    left: string;
    bottom: string;
    top?: undefined;
    right?: undefined;
} | {
    right: string;
    left: string | number;
    bottom: string;
    top?: undefined;
} | {
    right: string;
    left: string | number;
    top: string;
    bottom?: undefined;
};
export declare class UnknownVariantError extends Error {
    constructor(variant: never);
}
export declare class UnknownSizeError extends Error {
    constructor(size: never);
}
export {};
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