import type { IntensityBand } from './metModel';
/**
 * Heart Points — Google Fit / WHO-aligned moderate-to-vigorous credit.
 *
 * - Moderate (3–6 MET): 1 point per active minute
 * - Vigorous (>6 MET): 2 points per active minute
 * - Light/sedentary: 0 points
 *
 * WHO 150 min/week moderate ≡ ~150 HP/week at this mapping.
 */
export declare function heartPointsForMinute(met: number): number;
export declare function heartPointsForSession(met: number, activeMinutes: number): number;
export declare function activeMinutesFromBand(band: IntensityBand, durationMinutes: number): number;
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