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event.ts
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'use strict';
import type {RRule} from 'rrule';
import uuid from 'uuid-random';
import {
addOrGetCustomAttributes,
checkDate,
checkEnum,
checkNameAndMail,
escape,
formatDate,
formatDateTZ,
generateCustomAttributes, isRRule,
toDate,
toJSON
} from './tools';
import ICalAttendee, {ICalAttendeeData} from './attendee';
import ICalAlarm, {ICalAlarmData} from './alarm';
import ICalCategory, {ICalCategoryData} from './category';
import ICalCalendar from './calendar';
import {
ICalDateTimeValue,
ICalDescription,
ICalEventRepeatingFreq,
ICalLocation,
ICalOrganizer,
ICalRepeatingOptions,
ICalWeekday
} from './types';
export enum ICalEventStatus {
CONFIRMED = 'CONFIRMED',
TENTATIVE = 'TENTATIVE',
CANCELLED = 'CANCELLED'
}
export enum ICalEventBusyStatus {
FREE = 'FREE',
TENTATIVE = 'TENTATIVE',
BUSY = 'BUSY',
OOF = 'OOF'
}
export enum ICalEventTransparency {
TRANSPARENT = 'TRANSPARENT',
OPAQUE = 'OPAQUE'
}
export interface ICalEventData {
id?: string | number | null,
sequence?: number,
start?: ICalDateTimeValue | null,
end?: ICalDateTimeValue | null,
recurrenceId?: ICalDateTimeValue | null,
timezone?: string | null,
stamp?: ICalDateTimeValue,
allDay?: boolean,
floating?: boolean,
repeating?: ICalRepeatingOptions | RRule | string | null,
summary?: string,
location?: ICalLocation | string | null,
description?: ICalDescription | string | null,
organizer?: ICalOrganizer | string | null,
attendees?: ICalAttendee[] | ICalAttendeeData[],
alarms?: ICalAlarm[] | ICalAlarmData[],
categories?: ICalCategory[] | ICalCategoryData[],
status?: ICalEventStatus | null,
busystatus?: ICalEventBusyStatus | null,
priority?: number | null,
url?: string | null,
transparency?: ICalEventTransparency | null,
created?: ICalDateTimeValue | null,
lastModified?: ICalDateTimeValue | null,
x?: {key: string, value: string}[] | [string, string][] | Record<string, string>;
}
interface ICalEventInternalData {
id: string,
sequence: number,
start: ICalDateTimeValue | null,
end: ICalDateTimeValue | null,
recurrenceId: ICalDateTimeValue | null,
timezone: string | null,
stamp: ICalDateTimeValue,
allDay: boolean,
floating: boolean,
repeating: ICalEventInternalRepeatingData | RRule | string | null,
summary: string,
location: ICalLocation | null,
description: ICalDescription | null,
organizer: ICalOrganizer | null,
attendees: ICalAttendee[],
alarms: ICalAlarm[],
categories: ICalCategory[],
status: ICalEventStatus | null,
busystatus: ICalEventBusyStatus | null,
priority: number | null,
url: string | null,
transparency: ICalEventTransparency | null,
created: ICalDateTimeValue | null,
lastModified: ICalDateTimeValue | null,
x: [string, string][];
}
export interface ICalEventJSONData {
id: string,
sequence: number,
start: string | null,
end: string | null,
recurrenceId: string | null,
timezone: string | null,
stamp: string,
allDay: boolean,
floating: boolean,
repeating: ICalEventInternalRepeatingData | string | null,
summary: string,
location: ICalLocation | null,
description: ICalDescription | null,
organizer: ICalOrganizer | null,
attendees: ICalAttendee[],
alarms: ICalAlarm[],
categories: ICalCategory[],
status: ICalEventStatus | null,
busystatus: ICalEventBusyStatus | null,
priority?: number | null,
url: string | null,
transparency: ICalEventTransparency | null,
created: string | null,
lastModified: string | null,
x: {key: string, value: string}[];
}
interface ICalEventInternalRepeatingData {
freq: ICalEventRepeatingFreq;
count?: number;
interval?: number;
until?: ICalDateTimeValue;
byDay?: ICalWeekday[];
byMonth?: number[];
byMonthDay?: number[];
bySetPos?: number;
exclude?: ICalDateTimeValue[];
startOfWeek?: ICalWeekday;
}
/**
* Usually you get an `ICalCalendar` object like this:
* ```javascript
* import ical from 'ical-generator';
* const calendar = ical();
* const event = calendar.createEvent();
* ```
*/
export default class ICalEvent {
private readonly data: ICalEventInternalData;
private readonly calendar: ICalCalendar;
/**
* Constructor of [[`ICalEvent`]. The calendar reference is
* required to query the calendar's timezone when required.
*
* @param data Calendar Event Data
* @param calendar Reference to ICalCalendar object
*/
constructor(data: ICalEventData, calendar: ICalCalendar) {
this.data = {
id: uuid(),
sequence: 0,
start: null,
end: null,
recurrenceId: null,
timezone: null,
stamp: new Date(),
allDay: false,
floating: false,
repeating: null,
summary: '',
location: null,
description: null,
organizer: null,
attendees: [],
alarms: [],
categories: [],
status: null,
busystatus: null,
priority: null,
url: null,
transparency: null,
created: null,
lastModified: null,
x: []
};
this.calendar = calendar;
if (!calendar) {
throw new Error('`calendar` option required!');
}
data.id && this.id(data.id);
data.sequence && this.sequence(data.sequence);
data.start && this.start(data.start);
data.end && this.end(data.end);
data.recurrenceId && this.recurrenceId(data.recurrenceId);
data.timezone && this.timezone(data.timezone);
data.stamp && this.stamp(data.stamp);
data.allDay && this.allDay(data.allDay);
data.floating && this.floating(data.floating);
data.repeating && this.repeating(data.repeating);
data.summary && this.summary(data.summary);
data.location && this.location(data.location);
data.description && this.description(data.description);
data.organizer && this.organizer(data.organizer);
data.attendees && this.attendees(data.attendees);
data.alarms && this.alarms(data.alarms);
data.categories && this.categories(data.categories);
data.status && this.status(data.status);
data.busystatus && this.busystatus(data.busystatus);
data.priority && this.priority(data.priority);
data.url && this.url(data.url);
data.transparency && this.transparency(data.transparency);
data.created && this.created(data.created);
data.lastModified && this.lastModified(data.lastModified);
data.x && this.x(data.x);
}
/**
* Get the event's ID
* @since 0.2.0
*/
id(): string;
/**
* Use this method to set the event's ID.
* If not set, a UUID will be generated randomly.
*
* @param id Event ID you want to set
*/
id(id: string | number): this;
id(id?: string | number): this | string {
if (id === undefined) {
return this.data.id;
}
this.data.id = String(id);
return this;
}
/**
* Get the event's ID
* @since 0.2.0
* @alias id
*/
uid(): string;
/**
* Use this method to set the event's ID.
* If not set, a UUID will be generated randomly.
*
* @param id Event ID you want to set
* @alias id
*/
uid(id: string | number): this;
uid(id?: string | number): this | string {
return id === undefined ? this.id() : this.id(id);
}
/**
* Get the event's SEQUENCE number. Use this method to get the event's
* revision sequence number of the calendar component within a sequence of revisions.
*
* @since 0.2.6
*/
sequence(): number;
/**
* Set the event's SEQUENCE number. For a new event, this should be zero.
* Each time the organizer makes a significant revision, the sequence
* number should be incremented.
*
* @param sequence Sequence number or null to unset it
*/
sequence(sequence: number): this;
sequence(sequence?: number): this | number {
if (sequence === undefined) {
return this.data.sequence;
}
const s = parseInt(String(sequence), 10);
if (isNaN(s)) {
throw new Error('`sequence` must be a number!');
}
this.data.sequence = sequence;
return this;
}
/**
* Get the event start time which is currently
* set. Can be any supported date object.
*
* @since 0.2.0
*/
start(): ICalDateTimeValue | null;
/**
* Set the appointment date of beginning, which is required for all events.
* You can use any supported date object, see
* [Readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones)
* for details about supported values and timezone handling.
*
* @since 0.2.0
*/
start(start: ICalDateTimeValue): this;
start(start?: ICalDateTimeValue): this | ICalDateTimeValue | null {
if (start === undefined) {
return this.data.start;
}
this.data.start = checkDate(start, 'start');
if (this.data.start && this.data.end && toDate(this.data.start).getTime() > toDate(this.data.end).getTime()) {
const t = this.data.start;
this.data.start = this.data.end;
this.data.end = t;
}
return this;
}
/**
* Get the event end time which is currently
* set. Can be any supported date object.
*
* @since 0.2.0
*/
end(): ICalDateTimeValue | null;
/**
* Set the appointment date of end. You can use any supported date object, see
* [readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones)
* for details about supported values and timezone handling.
*
* @since 0.2.0
*/
end(end: ICalDateTimeValue | null): this;
end(end?: ICalDateTimeValue | null): this | ICalDateTimeValue | null {
if (end === undefined) {
return this.data.end;
}
if (end === null) {
this.data.end = null;
return this;
}
this.data.end = checkDate(end, 'end');
if (this.data.start && this.data.end && toDate(this.data.start).getTime() > toDate(this.data.end).getTime()) {
const t = this.data.start;
this.data.start = this.data.end;
this.data.end = t;
}
return this;
}
/**
* Get the event's recurrence id
* @since 0.2.0
*/
recurrenceId(): ICalDateTimeValue | null;
/**
* Set the event's recurrence id. You can use any supported date object, see
* [readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones)
* for details about supported values and timezone handling.
*
* @since 0.2.0
*/
recurrenceId(recurrenceId: ICalDateTimeValue | null): this;
recurrenceId(recurrenceId?: ICalDateTimeValue | null): this | ICalDateTimeValue | null {
if (recurrenceId === undefined) {
return this.data.recurrenceId;
}
if (recurrenceId === null) {
this.data.recurrenceId = null;
return this;
}
this.data.recurrenceId = checkDate(recurrenceId, 'recurrenceId');
return this;
}
/**
* Get the event's timezone.
* @since 0.2.6
*/
timezone(): string | null;
/**
* Use this method to set your event's timezone using the TZID property parameter on start and end dates,
* as per [date-time form #3 in section 3.3.5 of RFC 554](https://tools.ietf.org/html/rfc5545#section-3.3.5).
*
* This and the 'floating' flag (see below) are mutually exclusive, and setting a timezone will unset the
* 'floating' flag. If neither 'timezone' nor 'floating' are set, the date will be output with in UTC format
* (see [date-time form #2 in section 3.3.5 of RFC 554](https://tools.ietf.org/html/rfc5545#section-3.3.5)).
*
* See [Readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones) for details about
* supported values and timezone handling.
*
* ```javascript
* event.timezone('America/New_York');
* ```
*
* @since 0.2.6
*/
timezone(timezone: string | null): this;
timezone(timezone?: string | null): this | string | null {
if (timezone === undefined && this.data.timezone !== null) {
return this.data.timezone;
}
if (timezone === undefined) {
return this.calendar.timezone();
}
this.data.timezone = timezone ? timezone.toString() : null;
if (this.data.timezone) {
this.data.floating = false;
}
return this;
}
/**
* Get the event's timestamp
* @since 0.2.0
*/
stamp(): ICalDateTimeValue;
/**
* Set the appointment date of creation. Defaults to the current time and date (`new Date()`). You can use
* any supported date object, see [readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones)
* for details about supported values and timezone handling.
*
* @since 0.2.0
*/
stamp(stamp: ICalDateTimeValue): this;
stamp(stamp?: ICalDateTimeValue): this | ICalDateTimeValue {
if (stamp === undefined) {
return this.data.stamp;
}
this.data.stamp = checkDate(stamp, 'stamp');
return this;
}
/**
* Get the event's timestamp
* @since 0.2.0
* @alias stamp
*/
timestamp(): ICalDateTimeValue;
/**
* Set the appointment date of creation. Defaults to the current time and date (`new Date()`). You can use
* any supported date object, see [readme](https://github.com/sebbo2002/ical-generator#-date-time--timezones)
* for details about supported values and timezone handling.
*
* @since 0.2.0
* @alias stamp
*/
timestamp(stamp: ICalDateTimeValue): this;
timestamp(stamp?: ICalDateTimeValue): this | ICalDateTimeValue {
if (stamp === undefined) {
return this.stamp();
}
return this.stamp(stamp);
}
/**
* Get the event's allDay flag
* @since 0.2.0
*/
allDay(): boolean;
/**
* Set the event's allDay flag.
*
* ```javascript
* event.allDay(true); // → appointment is for the whole day
* ```
*
* @since 0.2.0
*/
allDay(allDay: boolean): this;
allDay(allDay?: boolean): this | boolean {
if (allDay === undefined) {
return this.data.allDay;
}
this.data.allDay = Boolean(allDay);
return this;
}
/**
* Get the event's floating flag.
* @since 0.2.0
*/
floating(): boolean;
floating(floating: boolean): this;
/**
* Set the event's floating flag. This unsets the event's timezone.
* Events whose floating flag is set to true always take place at the
* same time, regardless of the time zone.
*
* @since 0.2.0
*/
floating(floating?: boolean): this | boolean {
if (floating === undefined) {
return this.data.floating;
}
this.data.floating = Boolean(floating);
if (this.data.floating) {
this.data.timezone = null;
}
return this;
}
/**
* Get the event's repeating options
* @since 0.2.0
*/
repeating(): ICalEventInternalRepeatingData | RRule | string | null;
/**
* Set the event's repeating options by passing an [[`ICalRepeatingOptions`]] object.
*
* ```javascript
* event.repeating({
* freq: 'MONTHLY', // required
* count: 5,
* interval: 2,
* until: new Date('Jan 01 2014 00:00:00 UTC'),
* byDay: ['su', 'mo'], // repeat only sunday and monday
* byMonth: [1, 2], // repeat only in january and february,
* byMonthDay: [1, 15], // repeat only on the 1st and 15th
* bySetPos: 3, // repeat every 3rd sunday (will take the first element of the byDay array)
* exclude: [new Date('Dec 25 2013 00:00:00 UTC')], // exclude these dates
* excludeTimezone: 'Europe/Berlin', // timezone of exclude
* wkst: 'SU' // Start the week on Sunday, default is Monday
* });
* ```
*
* @since 0.2.0
*/
repeating(repeating: ICalRepeatingOptions | null): this;
/**
* Set the event's repeating options by passing an [RRule object](https://github.com/jakubroztocil/rrule).
* @since 2.0.0-develop.5
*/
repeating(repeating: RRule | null): this;
/**
* Set the events repeating options by passing a string which is inserted in the ical file.
* @since 2.0.0-develop.5
*/
repeating(repeating: string | null): this;
/**
* @internal
*/
repeating(repeating: ICalRepeatingOptions | RRule | string | null): this;
repeating(repeating?: ICalRepeatingOptions | RRule | string | null): this | ICalEventInternalRepeatingData | RRule | string | null {
if (repeating === undefined) {
return this.data.repeating;
}
if (!repeating) {
this.data.repeating = null;
return this;
}
if(isRRule(repeating) || typeof repeating === 'string') {
this.data.repeating = repeating;
return this;
}
this.data.repeating = {
freq: checkEnum(ICalEventRepeatingFreq, repeating.freq) as ICalEventRepeatingFreq
};
if (repeating.count) {
if (!isFinite(repeating.count)) {
throw new Error('`repeating.count` must be a finite number!');
}
this.data.repeating.count = repeating.count;
}
if (repeating.interval) {
if (!isFinite(repeating.interval)) {
throw new Error('`repeating.interval` must be a finite number!');
}
this.data.repeating.interval = repeating.interval;
}
if (repeating.until !== undefined) {
this.data.repeating.until = checkDate(repeating.until, 'repeating.until');
}
if (repeating.byDay) {
const byDayArray = Array.isArray(repeating.byDay) ? repeating.byDay : [repeating.byDay];
this.data.repeating.byDay = byDayArray.map(day => checkEnum(ICalWeekday, day) as ICalWeekday);
}
if (repeating.byMonth) {
const byMonthArray = Array.isArray(repeating.byMonth) ? repeating.byMonth : [repeating.byMonth];
this.data.repeating.byMonth = byMonthArray.map(month => {
if (typeof month !== 'number' || month < 1 || month > 12) {
throw new Error('`repeating.byMonth` contains invalid value `' + month + '`!');
}
return month;
});
}
if (repeating.byMonthDay) {
const byMonthDayArray = Array.isArray(repeating.byMonthDay) ? repeating.byMonthDay : [repeating.byMonthDay];
this.data.repeating.byMonthDay = byMonthDayArray.map(monthDay => {
if (typeof monthDay !== 'number' || monthDay < 1 || monthDay > 31) {
throw new Error('`repeating.byMonthDay` contains invalid value `' + monthDay + '`!');
}
return monthDay;
});
}
if (repeating.bySetPos) {
if (!this.data.repeating.byDay) {
throw '`repeating.bySetPos` must be used along with `repeating.byDay`!';
}
if (typeof repeating.bySetPos !== 'number' || repeating.bySetPos < -1 || repeating.bySetPos > 4) {
throw '`repeating.bySetPos` contains invalid value `' + repeating.bySetPos + '`!';
}
this.data.repeating.byDay.splice(1);
this.data.repeating.bySetPos = repeating.bySetPos;
}
if (repeating.exclude) {
const excludeArray = Array.isArray(repeating.exclude) ? repeating.exclude : [repeating.exclude];
this.data.repeating.exclude = excludeArray.map((exclude, i) => {
return checkDate(exclude, `repeating.exclude[${i}]`);
});
}
if (repeating.startOfWeek) {
this.data.repeating.startOfWeek = checkEnum(ICalWeekday, repeating.startOfWeek) as ICalWeekday;
}
return this;
}
/**
* Get the event's summary
* @since 0.2.0
*/
summary(): string;
/**
* Set the event's summary.
* Defaults to an empty string if nothing is set.
*
* @since 0.2.0
*/
summary(summary: string): this;
summary(summary?: string): this | string {
if (summary === undefined) {
return this.data.summary;
}
this.data.summary = summary ? String(summary) : '';
return this;
}
/**
* Get the event's location
* @since 0.2.0
*/
location(): ICalLocation | null;
/**
* Set the event's location by passing a string (minimum) or
* an [[`ICalLocation`]] object which will also fill the iCal
* `GEO` attribute and Apple's `X-APPLE-STRUCTURED-LOCATION`.
*
* ```javascript
* event.location({
* title: 'Apple Store Kurfürstendamm',
* address: 'Kurfürstendamm 26, 10719 Berlin, Deutschland',
* radius: 141.1751386318387,
* geo: {
* lat: 52.503630,
* lon: 13.328650
* }
* });
* ```
*
* @since 0.2.0
*/
location(location: ICalLocation | string | null): this;
location(location?: ICalLocation | string | null): this | ICalLocation | null {
if (location === undefined) {
return this.data.location;
}
if (typeof location === 'string') {
this.data.location = {
title: location
};
return this;
}
if (
(location && !location.title) ||
(location?.geo && (!isFinite(location.geo.lat) || !isFinite(location.geo.lon)))
) {
throw new Error(
'`location` isn\'t formatted correctly. See https://sebbo2002.github.io/ical-generator/'+
'develop/reference/classes/icalevent.html#location'
);
}
this.data.location = location || null;
return this;
}
/**
* Get the event's description as an [[`ICalDescription`]] object.
* @since 0.2.0
*/
description(): ICalDescription | null;
/**
* Set the events description by passing a plaintext string or
* an object containing both a plaintext and a html description.
* Only a few calendar apps support html descriptions and like in
* emails, supported HTML tags and styling is limited.
*
* ```javascript
* event.description({
* plain: 'Hello World!';
* html: '<p>Hello World!</p>';
* });
* ```
*
* @since 0.2.0
*/
description(description: ICalDescription | string | null): this;
description(description?: ICalDescription | string | null): this | ICalDescription | null {
if (description === undefined) {
return this.data.description;
}
if (description === null) {
this.data.description = null;
return this;
}
if (typeof description === 'string') {
this.data.description = {plain: description};
}
else {
this.data.description = description;
}
return this;
}
/**
* Get the event's organizer
* @since 0.2.0
*/
organizer(): ICalOrganizer | null;
/**
* Set the event's organizer
*
* ```javascript
* event.organizer({
* name: 'Organizer\'s Name',
* email: 'organizer@example.com'
* });
*
* // OR
*
* event.organizer('Organizer\'s Name <organizer@example.com>');
* ```
*
* You can also add an explicit `mailto` email address.
*
* ```javascript
* event.organizer({
* name: 'Organizer\'s Name',
* email: 'organizer@example.com',
* mailto: 'explicit@mailto.com'
* })
* ```
*
* @since 0.2.0
*/
organizer(organizer: ICalOrganizer | string | null): this;
organizer(organizer?: ICalOrganizer | string | null): this | ICalOrganizer | null {
if (organizer === undefined) {
return this.data.organizer;
}
if (organizer === null) {
this.data.organizer = null;
return this;
}
this.data.organizer = checkNameAndMail('organizer', organizer);
return this;
}
/**
* Creates a new [[`ICalAttendee`]] and returns it. Use options to prefill
* the attendee's attributes. Calling this method without options will create
* an empty attendee.
*
* ```javascript
* const cal = ical();
* const event = cal.createEvent();
* const attendee = event.createAttendee({email: 'hui@example.com', name: 'Hui'});
*
* // add another attendee
* event.createAttendee('Buh <buh@example.net>');
* ```
*
* As with the organizer, you can also add an explicit `mailto` address.
*
* ```javascript
* event.createAttendee({email: 'hui@example.com', name: 'Hui', mailto: 'another@mailto.com'});
*
* // overwrite an attendee's mailto address
* attendee.mailto('another@mailto.net');
* ```
*
* @since 0.2.0
*/
createAttendee(data: ICalAttendee | ICalAttendeeData | string = {}): ICalAttendee {
if (data instanceof ICalAttendee) {
this.data.attendees.push(data);
return data;
}
if (typeof data === 'string') {
data = checkNameAndMail('data', data);
}
const attendee = new ICalAttendee(data, this);
this.data.attendees.push(attendee);
return attendee;
}
/**
* Get all attendees
* @since 0.2.0
*/
attendees(): ICalAttendee[];
/**
* Add multiple attendees to your event
*
* ```javascript
* const event = ical().createEvent();
*
* cal.attendees([
* {email: 'a@example.com', name: 'Person A'},
* {email: 'b@example.com', name: 'Person B'}
* ]);
*
* cal.attendees(); // --> [ICalAttendee, ICalAttendee]
* ```
*
* @since 0.2.0
*/
attendees(attendees: (ICalAttendee | ICalAttendeeData | string)[]): this;
attendees(attendees?: (ICalAttendee | ICalAttendeeData | string)[]): this | ICalAttendee[] {
if (!attendees) {
return this.data.attendees;
}
attendees.forEach(attendee => this.createAttendee(attendee));
return this;
}
/**
* Creates a new [[`ICalAlarm`]] and returns it. Use options to prefill
* the alarm's attributes. Calling this method without options will create
* an empty alarm.
*
* ```javascript
* const cal = ical();
* const event = cal.createEvent();
* const alarm = event.createAlarm({type: 'display', trigger: 300});
*
* // add another alarm
* event.createAlarm({
* type: 'audio',
* trigger: 300, // 5min before event
* });
* ```
*
* @since 0.2.1
*/
createAlarm(data: ICalAlarm | ICalAlarmData = {}): ICalAlarm {
const alarm = data instanceof ICalAlarm ? data : new ICalAlarm(data, this);
this.data.alarms.push(alarm);
return alarm;
}
/**
* Get all alarms
* @since 0.2.0
*/
alarms(): ICalAlarm[];
/**
* Add one or multiple alarms
*
* ```javascript
* const event = ical().createEvent();
*
* cal.alarms([
* {type: 'display', trigger: 600},
* {type: 'audio', trigger: 300}
* ]);
*
* cal.alarms(); // --> [ICalAlarm, ICalAlarm]
```
*
* @since 0.2.0
*/
alarms(alarms: ICalAlarm[] | ICalAlarmData[]): this;
alarms(alarms?: ICalAlarm[] | ICalAlarmData[]): this | ICalAlarm[] {
if (!alarms) {
return this.data.alarms;
}
alarms.forEach((alarm: ICalAlarm | ICalAlarmData) => this.createAlarm(alarm));
return this;
}
/**
* Creates a new [[`ICalCategory`]] and returns it. Use options to prefill the categories' attributes.
* Calling this method without options will create an empty category.
*
* ```javascript
* const cal = ical();
* const event = cal.createEvent();
* const category = event.createCategory({name: 'APPOINTMENT'});
*
* // add another alarm
* event.createCategory({
* name: 'MEETING'
* });
* ```
*
* @since 0.3.0
*/
createCategory(data: ICalCategory | ICalCategoryData = {}): ICalCategory {
const category = data instanceof ICalCategory ? data : new ICalCategory(data);
this.data.categories.push(category);
return category;
}
/**
* Get all categories
* @since 0.3.0
*/
categories(): ICalCategory[];
/**
* Add categories to the event or return all selected categories.
*
* ```javascript
* const event = ical().createEvent();
*
* cal.categories([
* {name: 'APPOINTMENT'},