import type { GeocodedActivity } from '../types';
/**
 * Count activities with coordinates.
 */
export declare function countWithCoordinates(activities: readonly GeocodedActivity[]): number;
/**
 * Filter to only activities with coordinates.
 */
export declare function filterWithCoordinates(activities: readonly GeocodedActivity[]): GeocodedActivity[];
/**
 * Calculate the center point of activities with coordinates.
 */
export declare function calculateCenter(activities: readonly GeocodedActivity[]): {
    lat: number;
    lng: number;
} | null;
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