import React from 'react';
declare class LockScreen extends React.Component<{
    defaultVisible?: boolean;
    visible?: boolean;
    duration: number;
    onVisibleChange?: (visible: boolean) => void;
    onUnLock?: (password: string | undefined) => void;
}, {
    visible: boolean;
    password: string | undefined;
}> {
    timer: any;
    constructor(props: any);
    componentDidMount(): void;
    componentWillUnmount(): void;
    shouldComponentUpdate(nextProps: any, nextState: any): boolean;
    static getDerivedStateFromProps(nextProps: any, prevState: any): {
        visible: any;
    } | null;
    handleMousemove: () => void;
    handleUnLock: () => void;
    render(): JSX.Element;
}
export default LockScreen;