export declare function isPlainObject(obj: any): boolean;
export declare function reverseKV(obj: Record<string, any>): Record<string, string>;
export declare function remove<T extends Record<string, any>>(obj: T, f: (v: T[keyof T], k: keyof T, obj: T) => boolean): T;
export declare function remove<T>(arr: T[], f: (v: T, k: number, arr: T[]) => boolean): T[];
/**
 * 从对象中移除空值
 * 注意: removeBlank会移除零长字符串, removeEmpty会移除{}
 * 但removeEmpty不会移除[]
 */
export declare function removeNils(obj: Record<string, any>, options?: {
    removeBlank?: boolean;
    removeEmpty?: boolean;
    recursive?: boolean;
}): Record<string, any>;
export declare function removeProp(obj: Record<string, any>, prop: string, options?: {
    recursive?: boolean;
}): Record<string, any>;
export declare function objSubtract<T extends object>(obj2: T, obj1: T, reserveKey?: string): Partial<T>;
export declare function objSubtractDeep<T extends {}>(obj2: T, obj1: T, options?: {
    removeBlank?: boolean;
    removeEmpty?: boolean;
    removeNil?: boolean;
}): Partial<T>;
export declare function getOrElse<T extends Record<string, any>>(obj: T, k: keyof T, defaultValue?: T[keyof T]): T[keyof T] | undefined;
export declare function getNumberOrElse<T extends Record<string, any>>(obj: T, k: keyof T, defaultValue?: number): number;
/**
 * 注意与JSON.parse不同
 */
export declare function str2object(s: string): any;
/**
 * 注意与JSON.stringify不同
 */
export declare function object2str(obj: any): string;
export declare function dissoc(obj: any, arr: string[] | string): any;
/**
 * 类似Rx.mergeDeep, 但支持数组 ( 按index )
 */
export declare function mergeDeep(slave: any, master: any): any;
/**
 * [{id:1},{id:2}] =>{1: {id:1}, 2: {id:2}}
 */
export declare function idMap<T>(idArray: T[], idField?: string): {
    [id: string]: T;
};
export declare function deepRenameProps(obj: Record<string, any>, keyMapping: {
    [k: string]: string;
}): object;