interface ClashItem {
    id: number;
    ifcClass: string;
    name: string;
    box: number[];
}
/** Rows to clash candidates, dropping ignored classes and anything with no real box. */
export declare function clashCandidates(rows: Record<string, unknown>[]): ClashItem[];
/**
 * Axis-aligned overlap, with a tolerance that SHRINKS both boxes.
 *
 * The strict comparison matters: two slabs meeting exactly face to face share a
 * plane, and reporting that would mean every floor clashes with every wall
 * standing on it. `tolerance` then demands a real interpenetration of that
 * depth before a pair counts, which is how modelling noise gets tuned out.
 */
export declare function boxesOverlap(a: number[], b: number[], tolerance: number): boolean;
export {};