import type { CDPSession, LaunchOptions, Page } from "playwright";
export type BrowserCommitMode = "headless-page-capture" | "headless-begin-frame";
export type LinuxHeadlessProcessMode = "single-process" | "single-renderer";
export declare const BROWSER_COMMIT_MODE: BrowserCommitMode;
export interface HeadlessFrameControl {
    nextFrameTimeTicks: number;
}
/**
 * Align BeginFrame with a new virtual-time base without ever reusing or
 * moving behind a frame timestamp that has already been submitted.
 */
export declare function synchronizeHeadlessFrameControl(control: HeadlessFrameControl, virtualTimeTicksBase: number): void;
export declare function browserOperationTimeout(platform?: NodeJS.Platform): number;
export declare function chromiumLaunchOptions(platform?: NodeJS.Platform, linuxProcessMode?: LinuxHeadlessProcessMode, fastRender?: boolean, parallelRender?: boolean): LaunchOptions;
/** Preserve DOM transparency in CDP screenshots instead of compositing onto Chromium white. */
export declare function configureTransparentViewport(cdp: CDPSession): Promise<void>;
export declare function captureCommittedViewport(cdp: CDPSession, page: Page, headlessFrameControl?: HeadlessFrameControl): Promise<{
    data: string;
    hasDamage?: boolean;
}>;
export declare function initializeHeadlessFrameControl(cdp: CDPSession): Promise<HeadlessFrameControl>;
export declare function captureHeadlessCommittedViewport(cdp: CDPSession, control: HeadlessFrameControl): Promise<{
    data: string;
    hasDamage?: boolean;
}>;
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