declare type state = 'enter' | 'entering' | 'entered' | 'exit' | 'exiting' | 'exited';
declare type duration = 'none' | 'fast' | 'base' | 'slow' | 'slower' | 'slowest';
export declare const durations: Map<import("..").ThemeDuration, number>;
export declare function useTransition(transitionIn: boolean, duration?: duration | {
    enter?: duration;
    exit?: duration;
}, transitionOnMount?: boolean): state;
export {};