icalzone/dist/index.js

iCalzone is a light-weight VTIMEZONE provider

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getZoneString = exports.getZoneLines = void 0;
const zones_1 = require("./zones"); // This module must be generated with `yarn run build-zones`.
function renderZoneSub(data) {
    const { n, f, t, r, s } = data;
    return [
        `TZNAME:${n}`,
        `TZOFFSETFROM:${f}`,
        `TZOFFSETTO:${t || f}`,
        `DTSTART:${s || zones_1.defaultStart}`,
        ...(r ? [`RRULE:FREQ=${r.f || 'YEARLY'};BYMONTH=${r.m};BYDAY=${r.d}`] : []),
    ];
}
/**
 * Tries to resolve a given time zone to iCalendar time zone component
 * (`VTIMEZONE`) as string array (usually for further processing).
 * @param zoneName Time zone name (e.g. `America/Los_Angeles`)
 * @param includeWrapper Set to `false` to avoid including lines for
 * `BEGIN:VTIMEZONE` and `END:VTIMEZONE`.
 * @returns Lines of the iCalendar time zone component (`VTIMEZONE`), each line
 * individually as an array of strings.
 */
function getZoneLines(zoneName, includeWrapper = true) {
    const zoneData = zones_1.zonesMap.get(zoneName);
    if (zoneData) {
        const { s, d } = zoneData;
        const lines = [
            ...(includeWrapper ? ['BEGIN:VTIMEZONE'] : []),
            `TZID:${zoneName}`,
            // `X-LIC-LOCATION:${zoneName}`, // Who uses this?
            'BEGIN:STANDARD',
            ...renderZoneSub(s),
            'END:STANDARD',
            ...(d ? [
                'BEGIN:DAYLIGHT',
                ...renderZoneSub(d),
                'END:DAYLIGHT',
            ] : []),
            ...(includeWrapper ? ['END:VTIMEZONE'] : []),
        ];
        return lines;
    }
}
exports.getZoneLines = getZoneLines;
/**
 * Tries to resolve a given time zone to iCalendar time zone component
 * (`VTIMEZONE`) as string.
 * @param zoneName Time zone name (e.g. `America/Los_Angeles`)
 * @param includeWrapper Set to `false` to avoid including lines for
 * `BEGIN:VTIMEZONE` and `END:VTIMEZONE`.
 * @returns The iCalendar time zone component (`VTIMEZONE`) as string
 * with `\r\n` line breaks.
 */
function getZoneString(zoneName, includeWrapper = true) {
    const lines = getZoneLines(zoneName, includeWrapper);
    return lines === null || lines === void 0 ? void 0 : lines.join('\r\n');
}
exports.getZoneString = getZoneString;