type Tester = (a: any, b: any) => boolean | undefined;
/**
 * 深度比較 (toStrictEqual)
 * @param a
 * @param b
 * @param isStrictCheck 嚴格(default: false, 開啟則會檢查不可為將物件中的 undefined 視為不同)
 * @param options
 */
declare function deepCompare(a: unknown, b: unknown, isStrictCheck?: boolean, options?: {
    customTesters?: Array<Tester>;
}): boolean;
export default deepCompare;