import { TouchEvent } from 'react';
export declare const systemInfo: import("@tarojs/taro").getSystemInfoSync.Result;
export declare function pageScrollTop(top: number, animated?: boolean): void;
interface windowResizeHandler {
    (res: {
        windowWidth: number;
        windowHeight: number;
    }): void;
    __sard_listener: () => void;
}
export declare function onWindowResize(listener: windowResizeHandler): void;
export declare function offWindowResize(listener: windowResizeHandler): void;
export type AutoHeight = boolean | {
    minHeight?: number;
    maxHeight?: number;
};
export declare function resizeTextArea(el: HTMLInputElement & HTMLTextAreaElement, autoHeight: AutoHeight): void;
/**
 * @description: 获取目标元素在根元素内的可滚动的祖先元素
 * @param {HTMLElement} target 目标元素，通常为 Event.target
 * @param {HTMLElement} root 根元素
 * @return {HTMLElement}
 */
export declare function getScrollParent(target: HTMLElement, root?: HTMLElement): HTMLElement;
/**
 * @description: 阻止浏览器默认行为
 * @param {Event} event
 * @return {void}
 */
export declare function preventDefault(event: Event | TouchEvent): void;
/**
 * @description: 获取元素的相对于指定元素的坐标
 * @param {HTMLElement} elem
 * @return {*}
 */
export declare function getOffset(elem: HTMLElement, root?: HTMLElement): {
    top: number;
    left: number;
};
export type ScrollIntoViewPosition = 'start' | 'center' | 'end' | 'nearest';
export interface ScrollIntoViewValueOptions {
    placement?: ScrollIntoViewPosition;
    offsetStart?: number;
    offsetEnd?: number;
    limited?: boolean;
    pageHeight?: number;
}
/**
```
                      page
                     ╱
    ╭───────────────╮    viewport
  ╭─│─ ─ ─ ─ ─ ─ ─ ─│─╮ ╱
  │ │ ╭───────────╮ │ │
  │ │ │  element  │ │ │
  │ │ ╰───────────╯ │ │
  ╰─│─ ─ ─ ─ ─ ─ ─ ─│─╯
    │               │
    │               │
    ╰───────────────╯
```

# 对象
- viewport: 视窗
- page: 页面
- element: 元素

# 参数
- viewportHeight: 视窗高度
- viewportScrollTop: 视窗顶部滚动距离
- elementHeight: 元素高度
- elementToPageTopOffset: 元素距离页面顶部距离

# 选项
- placement: 元素在视窗中的位置(start, center, end, nearest)
- offsetStart: 元素距离视窗顶部的偏移量
- offsetEnd: 元素距离视窗底部的偏移量
- limited: 是否限定视窗滚动的距离，让页面始终覆盖视窗；需要同时传递pageHeight选项（用于自定义滚动）
- pageHeight: 页面高度

# 结果值
- viewportScrollTop: 视窗顶部滚动的新的距离

*/
export declare function getScrollIntoViewValue(viewportHeight: number, viewportScrollTop: number, elementHeight: number, elementToPageTopOffset: number, options?: ScrollIntoViewValueOptions): number;
export interface ScrollIntoViewOptions {
    behavior?: 'smooth' | 'instant';
    block?: 'start' | 'center' | 'end' | 'nearest';
    inline?: 'start' | 'center' | 'end' | 'nearest';
    contextId?: string;
    offsetTop?: number;
    offsetBottom?: number;
}
/**
 * 滚动元素到页面指定位置
 *
 * @param pageScrollTop 当前页面滚动的距离
 * @param element 使用 ref 获取到元素
 *
 */
export declare function scrollIntoView(pageScrollTop: number, element: any, options?: ScrollIntoViewOptions): Promise<void>;
export type NodeRect = {
    width: number;
    height: number;
    top: number;
    right: number;
    bottom: number;
    left: number;
};
export declare function getRectById(id: string, ctxId?: string): Promise<NodeRect>;
/**
 * 命令式获取获取元素的大小和位置，兼容H5、小程序、RN
 *
 * @param element 通过 ref 获取的元素
 * @param ctxId 在小程序端如果使用 CustomWrapper 包裹元素，需要传递其id。
 */
export declare function getRectByElement(element: any, ctxId?: string): Promise<{
    width: number;
    height: number;
    top: number;
    right: number;
    bottom: number;
    left: number;
}>;
interface MatchScrollVisibleOptions {
    offset?: number;
    errorValue?: number;
    contextId?: string;
    isRect?: boolean;
}
/**
 * @description: 匹配元素列表中第一个位于滚动盒子可视区域的元素
 * @param {HTMLElement} elements 元素列表
 * @param {function} callback 匹配成功时回调
 * @param {number} offset 距离滚动盒子顶部的偏移量
 * @param {number} errorValue 误差值
 * @return {void}
 */
export declare function matchScrollVisible(elementsOrRects: any[], callback: (index: number) => unknown, options?: MatchScrollVisibleOptions): Promise<unknown>;
export declare function getElementById(id?: string): any;
export declare function createMouseBinder(options: {
    onStart?: (event: any) => void;
    onMove?: (event: any) => void;
    onEnd?: (event: any) => void;
}): {
    onMouseDown: (event: any) => void;
};
export {};