/**
 * Implicit HTTP steps (P6.1) — low-level undici handler plumbing, split from
 * http-interceptor.ts: response synthesis from records, error delivery,
 * pass-through counting, and raw-header helpers. Pure functions only; the
 * interception policy lives in http-interceptor.ts.
 */
import { type HttpEffectRecord } from './http-effect.js';
/** Header the raw-fetch escape hatch sets to force pass-through for one call. */
export declare const RAW_FETCH_HEADER = "x-memoflow-raw";
/**
 * Feed a fresh Response — built from a recorded effect — into the user's
 * undici handler by driving its callback protocol from the recorded bytes.
 * The `x-memoflow-replayed: 1` header is added so it's visible at the fetch
 * layer too.
 */
export declare function deliverFromRecord(handler: any, record: HttpEffectRecord): void;
/**
 * Wrap a real undici handler so pass-through-within-scope requests still
 * forward every callback untouched (byte-identical delivery) but fire `onDone`
 * exactly once when they settle, so the driver's in-flight counter is balanced.
 */
export declare function wrapCountingHandler(handler: any, onDone: () => void): any;
export declare function deliverError(handler: any, err: Error): void;
export declare function fullUrl(opts: any): string;
export declare function parseRawHeaders(raw: Buffer[] | string[] | null): [string, string][];
export declare function headersToList(headers: any): [string, string][];
export declare function hasRawHeader(opts: any): boolean;
/**
 * Add a request header to undici dispatch opts in whatever shape they carry
 * (flat array pairs or plain object). Used by the N2 auto-idempotency-key
 * injection; never overwrites an existing header of the same name.
 */
export declare function setHeaderIfAbsent(opts: any, name: string, value: string): void;
export declare function stripRawHeader(opts: any): void;