import { Protocol } from 'devtools-protocol';
import type { Browser as PuppeteerBrowser, CDPSession as PuppeteerCDPSession, Page as PuppeteerPage } from 'puppeteer-core';
import { PuppeteerCaptureBase } from './PuppeteerCaptureBase';
import { PuppeteerCaptureOptions } from './PuppeteerCaptureOptions';
export declare class PuppeteerCaptureViaHeadlessExperimental extends PuppeteerCaptureBase {
    static readonly REQUIRED_ARGS: string[];
    protected static readonly INJECTED = "__PuppeteerCaptureViaHeadlessExperimental";
    protected static readonly EJECTOR: string;
    protected readonly _injected: string;
    protected readonly _injector: string;
    protected readonly _ejector: string;
    protected readonly _requestFrameCapture: () => void;
    protected readonly _onSessionDisconnected: () => void;
    protected _session: PuppeteerCDPSession | null;
    protected _onNewDocumentScript: Protocol.Page.ScriptIdentifier | null;
    protected _frameTimeTicks: number;
    constructor(options?: PuppeteerCaptureOptions);
    /**
     * Returns the page's internal CDP client. This accesses Puppeteer's private
     * `_client()` method because `Page.addScriptToEvaluateOnNewDocument` and
     * `Page.removeScriptToEvaluateOnNewDocument` must be sent on the page's own
     * CDP session — a session created via `page.createCDPSession()` operates on
     * a separate target and cannot manage page-level lifecycle scripts.
     *
     * This private API has broken before (see Issue #7, where `page.client()`
     * was renamed to `page._client()`). The integration test matrix covering
     * multiple Puppeteer versions helps detect such changes early.
     */
    protected getPageClient(page: PuppeteerPage): PuppeteerCDPSession;
    protected _attach(page: PuppeteerPage): Promise<void>;
    protected _detach(page: PuppeteerPage): Promise<void>;
    protected requestFrameCapture(): void;
    protected doRequestFrameCapture(page: PuppeteerPage, session: PuppeteerCDPSession): void;
    protected onPostCaptureStarted(): Promise<void>;
    protected onPostCaptureStopped(): Promise<void>;
    protected onSessionDisconnected(): void;
    protected static validateBrowserArgs(browser: PuppeteerBrowser): void;
    protected static generateInjector(fps: number): string;
}