jkbrzt/rrule

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

3741 stars · 563 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

rrule.js is a JavaScript/TypeScript library for creating, parsing, and querying recurrence rules for calendar dates as defined in the iCalendar RFC 5545. It is a partial port of Python's dateutil rrule module and additionally supports converting rules to and from human-readable natural language text.

Use cases

• generate recurring calendar event dates in javascript
• parse iCalendar RRULE strings
• convert recurrence rules to human-readable text
• compute occurrences of a repeating event between two dates
• build a scheduling feature with weekly/monthly repeats
• handle recurring events with timezones in a web app

When to choose

• you need RFC 5545-compliant recurrence expansion in JavaScript or TypeScript
• you want natural-language parsing/serialization of recurrence rules
• you need timezone-aware recurring date computation in browser or Node

When to avoid

• you need full iCalendar file (.ics) generation rather than just RRULE logic
• you work outside JavaScript/TypeScript ecosystems
• you need calendar UI components rather than date computation

Facets

library · maturity stable

date-time parser serialization developer-tools web-development browser cross-platform recurrence-rules icalendar rrfc-5545 calendar scheduling natural-language-parsing javascript nodejs typescript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="jkbrzt/rrule")