/**
 * Catalog stock is reported as a band (in_stock / low_stock / out_of_stock),
 * never as the underlying exact count: the backend has removed, or will
 * remove, the exact integer entirely. `availability` is authoritative when
 * present; the legacy `count` threshold is a fallback for older API payloads,
 * using the same thresholds the backend itself applies. Fail closed: a row
 * with neither field is `unknown`, and `unknown` is never in stock.
 */
export type StockBand = 'in_stock' | 'low_stock' | 'out_of_stock' | 'unknown';
export interface CatalogStockRow {
    availability?: string;
    count?: number;
}
export declare function catalogStockBand(row: CatalogStockRow): StockBand;
export declare function isCatalogInStock(row: CatalogStockRow): boolean;
export declare function stockBandRank(row: CatalogStockRow): number;
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