import type { ReactNode } from 'react';
/**
 * A single card rendered inside the topology diagram — either one of the
 * fan-in sources or the shared target. `id` is used as the React key and to
 * correlate a card with its measured rect / connector path.
 */
export interface TopologyNode {
    id: string;
    render: ReactNode;
}
export interface TopologyProps {
    /**
     * Source cards stacked in the left column. Each one gets a connector path
     * fanning in to `target`. Renders correctly with a single entry (a plain
     * line/elbow, not degenerate) as well as many.
     */
    sources: TopologyNode[];
    /**
     * Cards rendered in the left column beneath the connected sources but WITHOUT a
     * connector to the target — e.g. an add-source not yet wired to the pipeline.
     */
    pendingSources?: TopologyNode[];
    /**
     * The single shared card on the right, vertically centered relative to
     * the stack of source cards.
     */
    target: TopologyNode;
}