export declare const stylePrefix: (prefix: string, delimiter?: string) => (styles: string | string[]) => string;
/**
 * 将utc字符串转化为对应分钟的偏移量
 * @param utc
 * @example
 * utcOffset('+8') // 480
 * utcOffset('-10')  // -600
 * utcOffset('-9:30) // -570
 * utcOffset('+10:45') // 645
 */
export declare const utcOffset: (utc: string) => number;