How to use the @js-joda/core.TextStyle.NARROW function in @js-joda/core

styleMap[TextStyle.FULL] = data;

            data = {};
            data[1] = monthsData.narrow[1];
            data[2] = monthsData.narrow[2];
            data[3] = monthsData.narrow[3];
            data[4] = monthsData.narrow[4];
            data[5] = monthsData.narrow[5];
            data[6] = monthsData.narrow[6];
            data[7] = monthsData.narrow[7];
            data[8] = monthsData.narrow[8];
            data[9] = monthsData.narrow[9];
            data[10] = monthsData.narrow[10];
            data[11] = monthsData.narrow[11];
            data[12] = monthsData.narrow[12];
            styleMap[TextStyle.NARROW] = data;

            data = {};
            data[1] = monthsData.abbreviated[1];
            data[2] = monthsData.abbreviated[2];
            data[3] = monthsData.abbreviated[3];
            data[4] = monthsData.abbreviated[4];
            data[5] = monthsData.abbreviated[5];
            data[6] = monthsData.abbreviated[6];
            data[7] = monthsData.abbreviated[7];
            data[8] = monthsData.abbreviated[8];
            data[9] = monthsData.abbreviated[9];
            data[10] = monthsData.abbreviated[10];
            data[11] = monthsData.abbreviated[11];
            data[12] = monthsData.abbreviated[12];
            styleMap[TextStyle.SHORT] = data;
            return this._createLocaleStore(styleMap);

data[3] = daysData.wide.wed;
            data[4] = daysData.wide.thu;
            data[5] = daysData.wide.fri;
            data[6] = daysData.wide.sat;
            data[7] = daysData.wide.sun;
            styleMap[TextStyle.FULL] = data;

            data = {};
            data[1] = daysData.narrow.mon;
            data[2] = daysData.narrow.tue;
            data[3] = daysData.narrow.wed;
            data[4] = daysData.narrow.thu;
            data[5] = daysData.narrow.fri;
            data[6] = daysData.narrow.sat;
            data[7] = daysData.narrow.sun;
            styleMap[TextStyle.NARROW] = data;

            data = {};
            data[1] = daysData.abbreviated.mon;
            data[2] = daysData.abbreviated.tue;
            data[3] = daysData.abbreviated.wed;
            data[4] = daysData.abbreviated.thu;
            data[5] = daysData.abbreviated.fri;
            data[6] = daysData.abbreviated.sat;
            data[7] = daysData.abbreviated.sun;
            styleMap[TextStyle.SHORT] = data;
            return this._createLocaleStore(styleMap);
        }
        if (field === ChronoField.AMPM_OF_DAY) {
            const dayPeriodsData = cldr.main('dates/calendars/gregorian/dayPeriods/format');
            const styleMap = {};
            let data = {};