export declare function omit(obj: Record<string, any>, fields: string[]): {
    [x: string]: any;
};
export declare function getValidAttrs<T extends Record<string, any>>(obj: T): Partial<T>;
export declare function removeEmptyAttrs<T extends Record<string, any>>(obj: T): Partial<T>;
export declare function getTabElementByValue(tabs: [], value: string): object;
export declare function firstUpperCase(str: string): string;
export type Gradients = {
    [percent: string]: string;
};
export type FromTo = {
    from: string;
    to: string;
};
export type LinearGradient = {
    direction?: string;
} & (Gradients | FromTo);
export declare function getBackgroundColor(color: string | string[] | LinearGradient): string;
/**
 *
 * @returns 获取 ie 浏览器版本
 */
export declare function getIEVersion(): number;
/**
 * Safari Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Safari/605.1.15
 * FireFox Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/114.0
 * Chrome Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36
 * Chrome 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.3
 * 搜狗 Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.87 Safari/537.36 SE 2.X MetaSr 1.
 * 360 Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.9 Safari/537.36 QIHU 360EE
 */
export declare function getFlexGapPolyFill(): boolean;
/**
 * 计算字符串字符的长度并可以截取字符串。
 * @param str 传入字符串
 * @param maxCharacter 规定最大字符串长度
 * @returns 当没有传入maxCharacter时返回字符串字符长度，当传入maxCharacter时返回截取之后的字符串和长度。
 */
export declare function getCharacterLength(str: string): number;
export declare function getCharacterLength(str: string, maxCharacter?: number): {
    length: number;
    characters: string;
};
/**
 * 返回 Unicode 字符长度
 * '👨'.length === 2
 * getUnicodeLength('👨') === 1
 * @param str
 * @returns {number}
 */
export declare function getUnicodeLength(str?: string): number;
/**
 * 修正 Unicode 最大字符长度
 * '👨👨👨'.slice(0, 2) === '👨'
 * limitUnicodeMaxLength('👨👨👨', 2) === '👨👨'
 * @param str
 * @param maxLength
 * @param oldStr
 * @returns {string}
 */
export declare function limitUnicodeMaxLength(str?: string, maxLength?: number, oldStr?: string): string;
/**
 * 是否样式单位
 * @param value 样式值
 * @returns 是否样式单位
 */
export declare const hasStyleUnit: (value: string) => boolean;
/**
 * 样式单位格式化
 * @param value 样式值
 * @param unit 单位，默认为'px'
 * @returns 格式化后的样式值
 */
export declare function formatStyleUnit(value: string | number, unit?: string): string;
/**
 * 兼容样式中支持number/string类型的传值 得出最后的结果。
 * @param param number或string类型的可用于样式上的值
 * @returns 可使用的样式值。
 */
export declare function pxCompat(param: string | number): string;
export declare function calculateNodeSize(targetElement: HTMLElement): {
    paddingSize: number;
    borderSize: number;
    boxSizing: number;
    sizingStyle: string;
} | {
    paddingSize: number;
    borderSize: number;
    boxSizing: string;
    sizingStyle: string;
};
export declare function isSafari(): boolean;
export declare function isFirefox(): boolean;