import type { Core } from 'cytoscape';
/***
 * Optimize settled layout spacing around readable label bounds instead of full node clearance.
 * Compound containment stays intentional while sibling groups retain non-overlapping boundaries.
 * @performance Cytoscape geometry is measured once, then bounded pure numeric trials reuse the
 * immutable snapshot. No layout reruns, zoom work, or intermediate frames are painted.
 */
export declare function compactGraphSpacing(cy: Core, spacingFactor: number): number;
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