import React, { PureComponent } from 'react';
declare type CollapseTransitionProps = {
    duration: number;
    isShow: boolean;
    children: React.ReactElement;
};
declare type CollapseTransitionState = {
    isShow: boolean;
};
export default class CollapseTransition extends PureComponent<CollapseTransitionProps, CollapseTransitionState> {
    selfRef: any;
    leaveTimer: any;
    enterTimer: any;
    static defaultProps: {
        duration: number;
    };
    state: {
        isShow: boolean;
    };
    componentDidMount(): void;
    componentWillUnmount(): void;
    static getDerivedStateFromProps(nextProps: Readonly<CollapseTransitionProps>, prevState: Readonly<CollapseTransitionState>): {
        isShow: boolean;
    } | null;
    componentDidUpdate(prevProps: Readonly<CollapseTransitionProps>, prevState: Readonly<CollapseTransitionState>): void;
    triggerChange(isShow: boolean): void;
    beforeEnter(): void;
    enter(): void;
    afterEnter(): void;
    beforeLeave(): void;
    leave(): void;
    afterLeave(): void;
    render(): React.ReactNode;
}
export {};