export interface AuthorizationCodeCallbackReceiver {
    register(input: {
        redirectUris: string[];
        state: string;
        expiresAt: Date;
        onCallback(result: {
            code?: string;
            error?: string;
        }): Promise<void> | void;
    }): Promise<{
        redirectUri: string;
        close(): void;
    }>;
}
type RegistrationInput = Parameters<AuthorizationCodeCallbackReceiver['register']>[0];
/** Receives authorization codes locally; credential exchange belongs to the authenticated caller. */
export declare class LoopbackAuthorizationCallbackReceiver implements AuthorizationCodeCallbackReceiver {
    private readonly listeners;
    private pending;
    register(input: RegistrationInput): ReturnType<AuthorizationCodeCallbackReceiver['register']>;
    private registerSerial;
    private handle;
}
export {};