export declare function omit(obj: object, fields: string[]): object;
export declare function removeEmptyAttrs<T>(obj: T): Partial<T>;
export declare function getTabElementByValue(tabs: any[], 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;
export declare function getPropsApiByEvent(eventName: 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;