type OmitUndefined<T> = {
    [key in keyof T]: T[key] extends undefined ? never : T[key];
};
/**
 * 移除对象中值为 undefined 的属性
 */
export declare function omitUndefined<T extends object, U = OmitUndefined<T>>(object: T): U;
/**
 * 接收一个字符串数组和一个任意类型的值，返回一个对象，其键由数组元素确定，值均为传入的第二个参数
 */
export declare function initObject<Keys extends readonly string[], Value>(keys: Keys, initValue: Value): Record<Keys[number], Value>;
/**
 * 将对象的所有属性都设置为同一个指定的值
 */
export declare function uniformAssign<T extends object, Value>(object: T, value: Value): T & Record<string, Value>;
/**
 * 创建一个对象，由两对象相减得到。
 */
export declare function omitObject<T extends object, U extends object>(object: T, another: U): Pick<T, Exclude<keyof T, keyof U>>;
/**
 * Object.assign 的深度操作，可以被 undefined 覆盖。
 */
export declare function deepAssign<TObject extends object, TSource extends object>(object: TObject, source: TSource): TObject & TSource;
export declare function deepAssign<TObject extends object, TSource1 extends object, TSource2 extends object>(object: TObject, source1: TSource1, source2: TSource2): TObject & TSource1 & TSource2;
export declare function deepAssign<TObject extends object, TSource1 extends object, TSource2 extends object, TSource3 extends object>(object: TObject, source1: TSource1, source2: TSource2, source3: TSource3): TObject & TSource1 & TSource2 & TSource3;
export {};