import { Merge } from 'type-fest';
declare type ArgType = Record<keyof any, any>;
declare type _Merge<T, U> = T extends Merge<T, U> ? T : Merge<T, U>;
export declare function merge<T>(input: Readonly<T>): T;
export declare function merge<T, U extends ArgType>(input: Readonly<T>, arg: Readonly<U>): _Merge<T, U>;
export declare function merge<T, U extends ArgType, V extends ArgType>(input: Readonly<T>, args1: Readonly<U>, args2: Readonly<V>): _Merge<_Merge<T, U>, V>;
export declare function merge<T, U extends ArgType, V extends ArgType, W extends ArgType>(input: Readonly<T>, args1: Readonly<U>, args2: Readonly<V>, args3: Readonly<W>): _Merge<_Merge<_Merge<T, U>, V>, W>;
export declare function merge(input: any, ...args: any[]): any;
export {};