ics-js

Create ICS files in ES6. Works in Node.js or in the browser.

Status

Installation

npm install --save ics-js

Documentation

View documentation on ESDoc.

Quick Guide

Import the module:

import * as ICS from 'ics-js';

Or import just what is needed:

import { VCALENDAR, VEVENT } from 'ics-js';

Create a component

const cal = new ICS.VCALENDAR();

The following components are implenented:

• VCALENDAR
• VEVENT
• VALARM
• VTODO

Add properties to a component

/**
 * Component#addProp(name, value, props = {}, skipTransformer = false)
 *
 * @param {string} name - Name of the property (e.g. DTSTAMP).
 * @param {*} [value] - Value of the property.
 * @param {Object} [props={}] - Object of properties for the property. Object keys and values are directly injected.
 * @param {boolean} [skipTransformer=false] - Explicitly determine if the property's value is transformed.
 */

cal.addProp('VERSION', 2) // Number(2) is converted to '2.0'
cal.addProp('PRODID', 'XYZ Corp');

Each component contains a list of property validations. Only valid properties can be added according to the RFC 5545 spec.

The following properties are implemented:

Name	Input	Output
CATEGORIES	Array<String>	Array items separated by ,
CREATED	Date	Formatted date to spec
DTEND	Date	Formatted date to spec
DTSTAMP	Date	Formatted date to spec
DTSTART	Date	Formatted date to spec
DUE	Date	Formatted date to spec
EXDATE	Array<Date>	Array items separated by , formatted to spec
GEO	Array<Float>	Array items separated by ; (should be [x, y])
LAST-MODIFIED	Date	Formatted date to spec
RDATE	Date	Formatted date to spec
TRANSP	Boolean	TRANSPARENT if true, OPAQUE if false
UID	String or none	If no input is provided, generates a random GUID
VERSION	Number	Float with 1 decimal to spec

All other properties (e.g. SUMMARY, LOCATION) are stored as-is without transformations.

Nest a component

const event = new ICS.VEVENT();
event.addProp('UID');
event.addProp('DTSTAMP', new Date('2015-07-18 10:00:00'), { VALUE: 'DATE-TIME' });

cal.addComponent(event);

Each component contains a list of valid nested components. Only valid components can be nested according to the RFC 5545 spec.

Generate ICS data

cal.toString(); // Returns a string
cal.toBlob(); // Returns a Blob
cal.toBase64(); // Returns a Promise with a base64 string as the resolved value