import * as React from 'react';
import { TransitionComponent } from '@restart/ui/types';
export type Omit<T, U> = Pick<T, Exclude<keyof T, keyof U>>;
export type ReplaceProps<Inner extends React.ElementType, P> = Omit<React.ComponentPropsWithRef<Inner>, P> & P;
export interface BsPrefixOnlyProps {
    bsPrefix?: string;
}
export interface AsProp<As extends React.ElementType = React.ElementType> {
    as?: As;
}
export interface BsPrefixProps<As extends React.ElementType = React.ElementType> extends BsPrefixOnlyProps, AsProp<As> {
}
export interface BsPrefixRefForwardingComponent<TInitial extends React.ElementType, P = unknown> {
    <As extends React.ElementType = TInitial>(props: React.PropsWithChildren<ReplaceProps<As, BsPrefixProps<As> & P>>, context?: any): React.ReactElement | null;
    propTypes?: any;
    contextTypes?: any;
    defaultProps?: Partial<P>;
    displayName?: string;
}
export declare class BsPrefixComponent<As extends React.ElementType, P = unknown> extends React.Component<ReplaceProps<As, BsPrefixProps<As> & P>> {
}
export type BsPrefixComponentClass<As extends React.ElementType, P = unknown> = React.ComponentClass<ReplaceProps<As, BsPrefixProps<As> & P>>;
export type TransitionType = boolean | TransitionComponent;
export declare function getOverlayDirection(placement: string, isRTL?: boolean): string;