import type { Cookie, CookieJar } from "./client.js";
/**
 * Host callback that can mint or refresh cookies for one request URL.
 * Must stay synchronous: `fetch` and `browse` attach cookies before they
 * leave this process, the same constraint as `extraHeaders`.
 *
 * Return cookies to add; do not mutate the jar. The caller persists them
 * with `jar.set()` so `--no-cookies` (no jar) skips the callback entirely.
 */
export type ExtraCookies = (url: string, jar: CookieJar) => Cookie[];
/**
 * Run a host `extraCookies` callback and persist whatever it returns.
 * No-op when the callback is omitted. Order matters: this must run
 * before `jar.header()` or Playwright `addCookies`, because an already
 * populated `Cookie` header cannot pick up extra cookies later.
 */
export declare function applyExtraCookies(url: string, jar: CookieJar, extraCookies?: ExtraCookies): Cookie[];
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