import { type PublicMethod, type PublicMethodWithTarget, type Options, type AnyTarget, type PageTarget } from "./types.js";
import { type Promisable, type SetReturnType } from "type-fest";
export declare const errorTargetClosedEarly = "The target was closed before receiving a response";
export declare const errorTabDoesntExist = "The tab doesn't exist";
export declare const errorTabWasDiscarded = "The tab was discarded";
declare function messenger<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type]>(type: Type, options: {
    isNotification: true;
}, target: AnyTarget, ...args: Parameters<Method>): void;
declare function messenger<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type], ReturnValue extends Promise<ReturnType<Method>>>(type: Type, options: Options, target: AnyTarget, ...args: Parameters<Method>): ReturnValue;
declare function getMethod<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type], PublicMethodType extends PublicMethod<Method>>(type: Type, target: Promisable<AnyTarget>): PublicMethodType;
declare function getMethod<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type], PublicMethodWithDynamicTarget extends PublicMethodWithTarget<Method>>(type: Type): PublicMethodWithDynamicTarget;
declare function getNotifier<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type], PublicMethodType extends SetReturnType<PublicMethod<Method>, void>>(type: Type, target: Promisable<AnyTarget>): PublicMethodType;
declare function getNotifier<Type extends keyof MessengerMethods, Method extends MessengerMethods[Type], PublicMethodWithDynamicTarget extends SetReturnType<PublicMethodWithTarget<Method>, void>>(type: Type): PublicMethodWithDynamicTarget;
export { messenger, getMethod, getNotifier };
export declare const backgroundTarget: PageTarget;