import { type CSSProperties } from 'vue';
/**
 * 设置html元素样式
 */
export declare function setStyle(el: HTMLElement, style: {
    [key in keyof CSSProperties]: CSSProperties[key];
}): void;
/**
 * 获取元素当前计算的样式
 */
export declare function getStyle(el: HTMLElement, prop: keyof CSSStyleDeclaration): string | number | (() => ArrayIterator<string>) | CSSRule | ((property: string) => string) | ((property: string) => string) | ((index: number) => string) | ((property: string) => string) | ((property: string, value: string | null, priority?: string) => void) | null;
/**
 *
 */
export declare function getDir(el?: HTMLElement | null): string;
/**
 * 获取元素内容盒子宽度
 */
export declare function getContextBoxWidth(el: HTMLElement): number;
/**
 * 用 js 对象的形式编写样式
 */
export declare function cssObjectToString(cssObject: {
    [selector: string]: {
        [key in keyof CSSProperties]: CSSProperties[key];
    };
}): string;
/**
 * 当值为数值时添加 px 单位
 */
export declare function addPxUnit(value: number | string | undefined): string | undefined;