import type { MiddlewareFn } from '../core/types';
export type AuthPluginOptions<User> = {
    validate: (token?: string) => Promise<User | null> | User | null;
    extractToken?: (headers: Record<string, string>) => string | undefined;
};
export declare function createAuthPlugin<User>(options: AuthPluginOptions<User>): MiddlewareFn<{
    headers: Record<string, string>;
}, any, {
    user: User;
}>;