/**
 * Parses a coordinate value into a [longitude, latitude] pair of strings.
 *
 * Supported inputs:
 *  - "[39.319364,-6.069623]"   // JSON-style string
 *  - "39.319364,-6.069623"     // comma-separated
 *  - "39.319364 -6.069623"     // space-separated
 *  - { type: "Point", coordinates: [39.192299, -6.164641] } // GeoJSON Point
 *
 * Returns:
 *  - ["39.319364", "-6.069623"] when valid (lon, lat as strings)
 *  - null when input is invalid or not recognized
 *
 * Notes:
 *  - Follows GeoJSON convention: [longitude, latitude]
 *  - Valid ranges: lon ∈ [-180, 180], lat ∈ [-90, 90]
 */
export declare function parseCoordinates(input?: unknown | null): string[] | null;