/** @public */
export interface CollapsiblePanel {
    /**
     * Whether the panel is collapsed.
     */
    collapsed?: boolean;
    /**
     * Initial collapsed state of an uncontrolled panel.
     */
    defaultCollapsed?: boolean;
    /**
     * Fired when the value of `collapsed` changes or should change.
     */
    onCollapsedChange?: (value: boolean) => void;
    /**
     * Container width, in pixels, below which the panel renders as a drawer.
     * An uncontrolled sidebar additionally collapses itself below this width and
     * reopens above it; a details panel never collapses itself.
     */
    breakpoint?: number;
    /**
     * Fired on the first measurement, and whenever the panel moves to the other
     * side of `breakpoint`, whether because the container was resized or because
     * `breakpoint` itself changed. Receives `true` while the container is
     * narrower than `breakpoint`.
     *
     * Crossing the breakpoint never overwrites a controlled `collapsed` and never
     * fires `onCollapsedChange` for a controlled panel: react here and update
     * `collapsed` yourself if you want to.
     */
    onBreakpointTransition?: (belowBreakpoint: boolean) => void;
}
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