export declare const isObject: (item: any) => boolean;
export declare const deepMerge: (target: any, ...sources: any[]) => any;
/**
 * @desc 解析上下左右值
 *
 * @param {Array} values - 上右下左值
 * @param {String} key - 样式key，如margin、padding等
 */
export declare const parseToStyle: (values: number[], key: string) => {
    [key: string]: number;
};
/**
 * @desc 解析上下左右值
 *
 * @param {Array} values - 上右下左值
 * @param {String} key - 样式key，如margin、padding等
 */
export declare const parseToCss: (values: number[], key: string) => any[];
/**
 * @desc 从 theme 中取需要的 `theme` 值，
 *
 * @param {Object} props - props，必须包含theme
 * @param {String} key - theme key
 * @param {String | Number} defaultValue - 默认主题值
 *
 * @example
 *
 * 优先级: (以Slider为例)
 * getTheme(props, 'slider.thumbTintColor', '#fff');
 *
 * props.thumbTintColor ->
 * props.theme.slider.thumbTintColor ->
 * props.theme.slider[props.theme.slider.type].thumbTintColor ->
 * props.theme.slider[props.theme.type].thumbTintColor

 *
 * ```javascript
 *  const StyledView = styled(View)`
 *    background-color: ${props => getTheme(props, 'slider.thumbTintColor', defaultTheme.slider.light.thumbTintColor)};
 * `;
 * ```
 *
 * ```javascript
 *  const defaultTheme = {
 *    type: 'light',
 *    slider: {
 *       type: 'dark',
 *       light: {
 *         thumbTintColor: '#fff',
 *       },
 *       dark: {
 *         thumbTintColor: '#333',
 *         // thumbTintColor: props => props.disabled ? '#999' : '#fff',
 *       }
 *    }
 *  }
 * ```
 */
export declare const getTheme: (props: {
    [key: string]: any;
}, key: string, defaultValue?: string | number) => any;
export declare const createGetTheme: (namespace: string) => (key: string, defaultValue: string | number) => string | number;
export declare const getValueFormObject: (namespace: string, object: Record<string, string | number>) => string | number | null;
declare type styleType = Record<string, string | number> & Record<string, string | number>[];
export declare const getPropsFromStyle: (namespace: string, style: styleType) => string | number | void;
export {};