ics

The iCalendar generator

This Fork

Replaced joi with joi-browser to make it browser compatible.

Install

npm install -S ics

Example Usage

1. Create an iCalendar event:

const ics = require('ics')

const event = {
  start: [2018, 5, 30, 6, 30],
  duration: { hours: 6, minutes: 30 },
  title: 'Bolder Boulder',
  description: 'Annual 10-kilometer run in Boulder, Colorado',
  location: 'Folsom Field, University of Colorado (finish line)',
  url: 'http://www.bolderboulder.com/',
  geo: { lat: 40.0095, lon: 105.2669 },
  categories: ['10k races', 'Memorial Day Weekend', 'Boulder CO'],
  status: 'CONFIRMED',
  organizer: { name: 'Admin', email: '[email protected]' },
  attendees: [
    { name: 'Adam Gibbons', email: '[email protected]', rsvp: true },
    { name: 'Brittany Seaton', email: '[email protected]' }
  ]
}

ics.createEvent(event, (error, value) => {
  if (error) {
    console.log(error)
  }

  console.log(value)
  //  BEGIN:VCALENDAR
  //  VERSION:2.0
  //  CALSCALE:GREGORIAN
  //  PRODID:adamgibbons/ics
  //  BEGIN:VEVENT
  //  UID:070bbdd0-a6de-11e7-9552-4faa901a846b
  //  SUMMARY:Bolder Boulder
  //  DTSTAMP:20171002T012300Z
  //  DTSTART:20180530T125000Z
  //  DESCRIPTION:Annual 10-kilometer run in Boulder, Colorado
  //  URL:http://www.bolderboulder.com/
  //  GEO:40.0095;105.2669
  //  LOCATION:Folsom Field, University of Colorado (finish line)
  //  STATUS:CONFIRMED
  //  CATEGORIES:10k races,Memorial Day Weekend,Boulder CO
  //  ATTENDEE;RSVP=TRUE;CN=Adam Gibbons:mailto:[email protected]
  //  ATTENDEE;RSVP=FALSE;CN=Brittany Seaton:mailto:[email protected]
  //  BEGIN:VALARM
  //  ACTION:DISPLAY
  //  DESCRIPTION:Reminder
  //  TRIGGER;VALUE=DATE-TIME:20180530T020000Z
  //  END:VALARM
  //  DURATION:PT5H
  //  END:VEVENT
  //  END:VCALENDAR
})

2. Write an iCalendar file:

const { writeFileSync } = require('fs')
const ics = require('ics')

ics.createEvent({
  title: 'Dinner',
  description: 'Nightly thing I do',
  start: [2018, 1, 15, 6, 30],
  duration: { minutes: 50 }
}, (error, value) => {
  if (error) {
    console.log(error)
  }

  fs.writeFileSync(`${__dirname}/event.ics`, value)
})

3. Create multiple iCalendar events:

const ics = require('./dist')

const { error, value } = ics.createEvents([
  {
    title: 'Lunch',
    start: [2018, 1, 15, 12, 15],
    duration: { minutes: 45 }
  },
  {
    title: 'Dinner',
    start: [2018, 1, 15, 12, 15],
    duration: { hours: 1, minutes: 30 }
  }
])

console.log(value)
// BEGIN:VCALENDAR
// VERSION:2.0
// CALSCALE:GREGORIAN
// PRODID:adamgibbons/ics
// BEGIN:VEVENT
// UID:3c6d44e8-79a7-428d-acac-9586c9e06e5c
// SUMMARY:Lunch
// DTSTAMP:20180210T093900Z
// DTSTART:20180115T191500Z
// DURATION:PT45M
// END:VEVENT
// BEGIN:VEVENT
// UID:253cc897-fc26-4f25-9a01-b6bb57fa174d
// SUMMARY:Dinner
// DTSTAMP:20180210T093900Z
// DTSTART:20180115T191500Z
// DURATION:PT1H30M
// END:VEVENT
// END:VCALENDAR

API

createEvent(attributes[, callback])

Generates an iCal-compliant VCALENDAR string with one VEVENT. If a callback is not provided, returns an object having the form { error, value }, where value contains an iCal-compliant string if there are no errors. If a callback is provided, returns a Node-style callback.

attributes

Object literal containing event information. Only the start property is required. The following properties are accepted:

| Property | Description | Example | | ------------- | ------------- | ---------- | start | Required. Date and time at which the event begins. | [2000, 1, 5, 10, 0] (January 5, 2000 in my timezone) | end | Time at which event ends. Either end or duration is required, but not both. | [2000, 1, 5, 13, 5] (January 5, 2000 at 1pm) | duration | How long the event lasts. Object literal having form { weeks, days, hours, minutes, seconds } Either end or duration is required, but not both. | { hours: 1, minutes: 45 } (1 hour and 45 minutes) | title | Title of event. | 'Code review' | description | Description of event. | 'A constructive roasting of those seeking to merge into master branch' | location | Intended venue | Mountain Sun Pub and Brewery. | geo | Geographic coordinates (lat/lon) | { lat: 38.9072, lon: 77.0369 } | url | URL associated with event | 'http://www.mountainsunpub.com/' | status | Three statuses are allowed: TENTATIVE, CONFIRMED, or CANCELLED|CONFIRMED| organizer | Person organizing the event |{name: 'Adam Gibbons', email: '[email protected]'}| attendees | Persons invited to the event |[{ name: 'Mo', email: '[email protected]', rsvp: true }, { name: 'Bo', email: '[email protected]' }]| categories | Categories associated with the event |['hacknight', 'stout month']| alarms | Alerts that can be set to trigger before, during, or after the event |{ action: 'DISPLAY', trigger: [2000, 1, 4, 18, 30] }| productId | Product which created ics,PRODIDfield |'adamgibbons/ics'| uid | Universal unique id for event, produced by default withuuid/v1. **Warning:** This value must be **globally unique**. It is recommended that it follow the [RFC 822 addr-spec](https://www.w3.org/Protocols/rfc822/) (i.e. localpart@domain). Including the @domainhalf is a good way to ensure uniqueness. |'28021620-be61-11e7-be87-5f3ab42f0785'`

To create an all-day event, pass only three values (year, month, and date) to the start and end properties. The date of the end property should be the day after your all-day event. For example, in order to create an all-day event occuring on October 15, 2018:

const eventAttributes = {
  start: [2018, 10, 15],
  end: [2018, 10, 16],
  /* rest of attributes */
}

callback

Optional. Node-style callback.

function (err, value) {
  if (err) {
    // if iCal generation fails, err is an object containing the reason
    // if iCal generation succeeds, err is null
  }

  console.log(value) // iCal-compliant text string
}

createEvents(events[, callback])

Generates an iCal-compliant VCALENDAR string with multiple VEVENTS.

If a callback is not provided, returns an object having the form { error, value }, where value is an iCal-compliant text string if error is null.

If a callback is provided, returns a Node-style callback.

events

Array of attributes objects (as described in createEvent).

callback

Optional. Node-style callback.

function (err, value) {
  if (err) {
    // if iCal generation fails, err is an object containing the reason
    // if iCal generation succeeds, err is null
  }

  console.log(value) // iCal-compliant text string
}

Develop

Run mocha tests and watch for changes:

npm start

Run tests once and exit:

npm test

Build the project, compiling all ES6 files within the src directory into vanilla JavaScript in the dist directory.

npm run build

References

• RFC 5545: Internet Calendaring and Scheduling Core Object Specification (iCalendar)
• iCalendar Validator