import type { AbcInput, AbcResult } from './types.js';
/**
 * ABC Inventory Analysis — Annual Value Classification
 *
 * @formula
 *   - Annual Value = usage × unitCost
 *   - Sort by annual value descending
 *   - A: cumulative ≤ thresholdA (default 80%)
 *   - B: thresholdA < cumulative ≤ thresholdB (default 95%)
 *   - C: remaining items
 *
 * @reference Silver, E.A. "Inventory Management and Production Planning and Scheduling", 3rd Ed.
 */
export declare function abcAnalysis(input: AbcInput): AbcResult;
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