export interface TransitionTimeout {
    enter: number;
    exit: number;
}
export interface TransitionEasing {
    enter: string;
    exit: string;
}
/**
 * 获取过渡时长
 *
 * @param {(number | {
 *  enter: number,
 *   exit: number,
 * })} timeout
 * @param {({
 *   enter: number,
 *   exit: number,
 * })} defaultTimeout
 */
export declare function getDuration(timeout?: number | TransitionTimeout, defaultTimeout?: TransitionTimeout): TransitionTimeout;
/**
 * 获取过渡效果的缓动函数
 *
 * @param {(string | TransitionEasing)} easing
 * @param {TransitionEasing} defaultEasing
 */
export declare function getEasing(easing?: string | TransitionEasing, defaultEasing?: TransitionEasing): TransitionEasing;