import { TupleDifference } from '../types/tupleDifference';
declare global {
    export interface Function {
        addFunction<T extends (...args: any) => void, K extends (...args: [...Parameters<T>, ...any]) => void>(this: T, secondary: K, ...optionalArgs: TupleDifference<Parameters<T>, Parameters<K>>): (...args: Parameters<T>) => void;
    }
}
export declare function addFunction<T extends (...args: any) => void, K extends (...args: [...Parameters<T>, ...any]) => void>(primary: T, secondary: K, ...optionalArgs: TupleDifference<Parameters<T>, Parameters<K>>): (...args: Parameters<T>) => void;
export {};