import { InputMessage, OutputMessage, Policy } from './types.js';
/** A policy function with opts to run it with. Used by the pipeline. */
type PolicyTuple<P extends Policy = Policy> = [policy: P, opts?: InferPolicyOpts<P>];
/** Infer opts from the policy. */
type InferPolicyOpts<P> = P extends Policy<infer Opts> ? Opts : never;
/** Helper type for proper type inference of PolicyTuples. */
type Policies<T extends any[]> = {
    [K in keyof T]: PolicyTuple<T[K]> | Policy<T[K]>;
};
/**
 * Processes messages through multiple policies.
 *
 * If any policy returns a `reject` or `shadowReject` action, the pipeline will stop and return the rejected message.
 *
 * @example
 * ```ts
 * const result = await pipeline(msg, [
 *  noopPolicy,
 *  [filterPolicy, { kinds: [0, 1, 3, 5, 7, 1984, 9734, 9735, 10002] }],
 *  [keywordPolicy, ['https://t.me/']],
 *  [regexPolicy, /(🟠|🔥|😳)ChtaGPT/i],
 *  [pubkeyBanPolicy, ['e810fafa1e89cdf80cced8e013938e87e21b699b24c8570537be92aec4b12c18']],
 *  [hellthreadPolicy, { limit: 100 }],
 *  [rateLimitPolicy, { whitelist: ['127.0.0.1'] }],
 *  [antiDuplicationPolicy, { ttl: 60000, minLength: 50 }],
 * ]);
 * ```
 */
declare function pipeline<T extends unknown[]>(msg: InputMessage, policies: [...Policies<T>]): Promise<OutputMessage>;
export default pipeline;
export type { PolicyTuple };