import type { FactoryProvider, ModuleMetadata } from "@nestjs/common";
export declare const TURNSTILE_OPTIONS_SYMBOL: unique symbol;
export type TurnstileOptions<Req = Request | any> = Readonly<{
    secretKey: string;
    token: (req: Req) => string;
    skipIf?: boolean | ((request: Req) => boolean | Promise<boolean>);
}>;
export type TurnstileAsyncOptions = Pick<ModuleMetadata, 'imports'> & Pick<FactoryProvider<TurnstileOptions>, 'useFactory' | 'inject'>;