Interface ParsedLength

interface ParsedLength {
    avg_respiration_rate?: number;
    avg_speed?: number;
    avg_swimming_cadence?: number;
    enhanced_avg_respiration_rate?: number;
    enhanced_max_respiration_rate?: number;
    event?: Event;
    event_group?: number;
    event_type?: EventType;
    length_type?: LengthType;
    max_respiration_rate?: number;
    message_index?: MessageIndex;
    opponent_score?: number;
    player_score?: number;
    start_time?: Date;
    stroke_count?: (number | null)[];
    swim_stroke?: SwimStroke;
    timestamp?: Date;
    total_calories?: number;
    total_elapsed_time?: number;
    total_strokes?: number;
    total_timer_time?: number;
    zone_count?: (number | null)[];
}