/**
 * Minimal interfaces for Playwright's Page and BrowserContext. We use
 * structural types rather than importing from a specific Playwright package
 * so this works with any version of playwright, playwright-core, or
 * @playwright/test.
 */
interface PlaywrightBrowserContext {
    addCookies(cookies: Array<{
        name: string;
        value: string;
        url?: string;
        domain?: string;
        path?: string;
    }>): Promise<void>;
    cookies(): Promise<Array<{
        name: string;
        value: string;
    }>>;
    clearCookies(options?: {
        name?: string;
        domain?: string;
        path?: string;
    }): Promise<void>;
}
interface PlaywrightPage {
    url(): string;
    context(): PlaywrightBrowserContext;
}
/**
 * Runs a function with instant navigation enabled. Within this scope,
 * navigations render the prefetched UI immediately and wait for the
 * callback to complete before streaming in dynamic data.
 *
 * Uses the cookie-based protocol: setting the cookie acquires the
 * navigation lock (via CookieStore change event), and clearing it
 * releases the lock.
 *
 * If the page is already loaded, the URL is inferred
 * automatically. For a fresh page (before any navigation), pass
 * `baseURL` so the cookie can be scoped to the correct domain:
 *
 *   await instant(page, async () => {
 *     await page.goto(url)
 *     // ...
 *   }, { baseURL: 'http://localhost:3000' })
 *
 * When `@playwright/test` is installed, acquire/release actions appear
 * as labeled steps in the Playwright UI.
 */
export declare function instant<T>(page: PlaywrightPage, fn: () => Promise<T>, options?: {
    baseURL?: string;
}): Promise<T>;
export {};