@hebcal/core/dist/esm/DailyLearning.js

A perpetual Jewish Calendar API

/*! @hebcal/core v5.10.1, distributed under GPLv2 https://www.gnu.org/licenses/gpl-2.0.txt */
const cals = new Map();
/**
 * Plug-ins for daily learning calendars such as Daf Yomi, Mishna Yomi, Nach Yomi, etc.
 *
 * Learning schedules are provided by the `@hebcal/learning` package.
 */
class DailyLearning {
    /**
     * Register a new learning calendar.
     * @param name case insensitive
     * @param calendar a function that returns an `Event` or `null`
     * @param startDate the first date for which this calendar is valid
     */
    static addCalendar(name, calendar, startDate) {
        if (typeof calendar !== 'function') {
            throw new TypeError(`Invalid calendar function: ${calendar}`);
        }
        cals.set(name.toLowerCase(), {
            fn: calendar,
            startDate: startDate,
        });
    }
    /**
     * Returns an event from daily calendar for a given date. Returns `null` if there
     * is no learning from this calendar on this date.
     * @param name case insensitive
     * @param hd Hebrew Date
     * @param il true for Israel, false for Diaspora
     */
    static lookup(name, hd, il) {
        const cal = cals.get(name.toLowerCase());
        if (typeof cal === 'object') {
            return cal.fn(hd, il);
        }
        return null;
    }
    static getStartDate(name) {
        const cal = cals.get(name.toLowerCase());
        if (typeof cal === 'object') {
            return cal.startDate;
        }
        return undefined;
    }
    /**
     * Tests to see if learning calendar has been registered
     * @param name case insensitive
     */
    static has(name) {
        return cals.has(name.toLowerCase());
    }
    /** Returns the names of all calendars registered */
    static getCalendars() {
        return Array.from(cals.keys());
    }
}

export { DailyLearning };
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