/**
 * PanelHeader
 *
 * The heading every left-rail panel wears: title, an optional actions slot, a
 * collapse button, and the rule beneath. Blocks, Outline, Version history and
 * Data sources all render it, so their headings stay identical by construction
 * instead of by three hand-rolled copies drifting apart — which is exactly what
 * had happened (styles.css defined .css-plugin-panel-header twice, with
 * different padding).
 *
 * Collapsing is built in rather than a required prop: all four panels want the
 * same dispatch, and every one of them renders inside Puck's context. Pass
 * `onCollapse` only for work that must happen *in addition*.
 */
import React from 'react';
export interface PanelHeaderProps {
    /** Panel name, rendered as the heading. */
    title: string;
    /** Extra work to run after collapsing. The collapse itself is built in. */
    onCollapse?: () => void;
    /** Optional controls rendered between the title and the collapse button. */
    actions?: React.ReactNode;
}
export declare function PanelHeader({ title, onCollapse, actions, }: PanelHeaderProps): React.ReactElement;