import { type StrideSex } from './strideModel';
export interface PedometerMetricsInput {
    steps: number;
    /** Session duration (ms) */
    durationMs: number;
    /** Measured distance (m) — if from native CMPedometer, preferred over stride estimate */
    measuredDistanceM?: number;
    /** User mass (kg) — required for calories */
    massKg: number;
    /** Stature (m) — for stride-based distance */
    heightM: number;
    sex?: StrideSex;
    /** Age (years) — reserved for future HR-zone models */
    ageYears?: number;
}
export interface PedometerMetricsResult {
    steps: number;
    durationMs: number;
    durationMinutes: number;
    /** Distance (m): native measurement or stride model */
    distanceM: number;
    distanceSource: 'measured' | 'stride_model';
    cadenceSpm: number;
    speedMps: number;
    strideM: number;
    met: number;
    intensityBand: 'sedentary' | 'light' | 'moderate' | 'vigorous';
    /** Gross energy at estimated MET (kcal) */
    grossKcal: number;
    /** Net above resting 1-MET (kcal) */
    netKcal: number;
    /** Moderate/vigorous minutes in session */
    activeMinutes: number;
    /** Google Fit–style Heart Points */
    heartPoints: number;
    /** Progress toward WHO / Google weekly goals (0–1) if applied to this session only */
    whoWeeklyProgress: number;
    heartPointsWeeklyProgress: number;
}
/**
 * Compute science-backed pedometer metrics from steps + duration + anthropometrics.
 * Pure functions — no native calls, fully testable / replayable.
 */
export declare function computePedometerMetrics(input: PedometerMetricsInput): PedometerMetricsResult;
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