import { PuppeteerLaunchOptions, Browser } from 'puppeteer';
export declare const DEFAULT_PUPPETEER_OPTIONS: PuppeteerLaunchOptions;
export declare const launchBrowser: (puppeteerOptions?: PuppeteerLaunchOptions | undefined) => Promise<Browser>;
/**
 * Lazily launches a shared Puppeteer Browser. Options are only honored on the
 * first call; subsequent calls return the cached instance. For caller-owned
 * lifecycle, use the `PdfGenerator` class instead.
 */
export declare const createBrowser: (puppeteerOptions?: PuppeteerLaunchOptions | undefined) => Promise<Browser>;
/**
 * Close the shared Puppeteer Browser created by `createBrowser` / `generatePdf`.
 * Must be called once you are done generating PDFs, otherwise the Node process
 * will not exit.
 */
export declare const closeBrowser: () => Promise<void>;