import React from 'react';
export interface PageHeaderProps {
    title: React.ReactNode;
    toolbar?: React.ReactNode;
    content?: React.ReactNode;
    size?: 'small' | 'standard' | 'medium' | 'large' | 'xlarge' | 'xxlarge';
    className?: string;
    breadcrumbs?: React.ReactNode;
    testId?: string;
}
/**
 * PageHeader implements a consistent header for a page header in which title is rendered on
 *  the left and a toolbar is rendered on the right. It also has a consistent box-shadow styling.
 */
export declare const PageHeader: React.FC<PageHeaderProps>;