export interface CaptureViewport {
    width: number;
    height: number;
}
export interface ViewportLockBrowser {
    resizeViewport(width: number, height: number): Promise<void>;
    wait(ms: number): Promise<void>;
    takeScreenshot(): Promise<Buffer>;
    currentPage: {
        viewportSize(): {
            width: number;
            height: number;
        } | null;
    };
}
export interface LockedViewportScreenshot {
    buffer: Buffer;
    actualViewport: {
        width: number;
        height: number;
    } | null;
    screenshotSize: {
        width: number;
        height: number;
    };
    expectedScreenshotSize: {
        width: number;
        height: number;
    };
    repaired: boolean;
}
interface ViewportLockOptions {
    settleMs?: number;
    maxAttempts?: number;
}
interface TakeViewportLockedScreenshotOptions extends ViewportLockOptions {
    deviceScaleFactor: number;
    maxScreenshotAttempts?: number;
}
export declare function lockCaptureViewport(browser: ViewportLockBrowser, viewport: CaptureViewport, options?: ViewportLockOptions): Promise<{
    actualViewport: {
        width: number;
        height: number;
    } | null;
    repaired: boolean;
}>;
export declare function takeViewportLockedScreenshot(browser: ViewportLockBrowser, viewport: CaptureViewport, options: TakeViewportLockedScreenshotOptions): Promise<LockedViewportScreenshot>;
export {};