/**
 * Dagre-based auto-layout for React Flow nodes.
 *
 * Reference: `docs/plans/20260501-universal-wysiwyg-schema-ux-v1.00W.md` §3.6
 * item 3. Pinned config: `rankdir: 'LR'` (left-to-right), `ranker:
 * 'network-simplex'` (dagre default, minimises edge crossings), `nodesep: 60`
 * (vertical gap between sibling nodes in the same rank), `ranksep: 80`
 * (horizontal gap between successive ranks — tuned for our default entity-card
 * width of ~260 px so labels never overlap).
 *
 * Pure function with zero React deps so it is trivially unit-testable.
 */
import type { Edge, Node } from '@xyflow/react';
export interface AutoLayoutOptions {
    /** Direction of the layout. Defaults to 'LR' (left-to-right). */
    rankdir?: 'LR' | 'TB' | 'RL' | 'BT';
    /** Vertical gap between sibling nodes in the same rank. Default 60. */
    nodesep?: number;
    /** Horizontal gap between successive ranks. Default 80. */
    ranksep?: number;
    /** Fallback node width when React Flow hasn't measured the node yet. */
    nodeWidth?: number;
    /** Fallback node height when React Flow hasn't measured the node yet. */
    nodeHeight?: number;
}
/**
 * Run dagre against the given React Flow `nodes`/`edges` and return a new
 * `nodes` array with each node's `position` updated to the layout result.
 *
 * Dagre returns node coordinates as centres; React Flow wants the top-left
 * corner, so we subtract half-width/half-height to convert.
 *
 * Unrelated node properties (`id`, `type`, `data`, `width`, `height`, etc.) are
 * preserved. Nodes whose size is already known via `node.width` / `node.height`
 * use those dimensions for better layout quality; otherwise the fallback
 * `nodeWidth`/`nodeHeight` options are used.
 *
 * @returns a new array of nodes with updated `position` fields. Empty input
 * returns the input array as-is (short-circuit for performance + no-op
 * semantics).
 */
export declare function computeDagreLayout<NodeData extends Record<string, unknown> = Record<string, unknown>>(nodes: Node<NodeData>[], edges: Edge[], options?: AutoLayoutOptions): Node<NodeData>[];
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