zen-observable is a lightweight, standards-compliant Observable implementation for JavaScript. Adhering to the TC39 Observable proposal, it provides a predictable and interoperable foundation for reactive programming. Its small size and focus on core functionality make it ideal for libraries and applications needing a reliable Observable without unnecessary overhead. Think RxJS lite: it simplifies asynchronous data streams and event handling with a solid, minimalistic approach.
Zen-observable npm package downloads show consistent popularity. From March 2024 to August 2025, monthly downloads remained mostly between 17 and 20 million, peaking above 22 million in July 2025. September 2025 shows a significantly lower download count, though the month is not yet complete.
The npm package zen-observable saw frequent releases from 2015 to 2019, with peak activity in 2015 and 2018. Release frequency significantly dropped after 2019, with only occasional updates in 2022. There have been no releases in 2023, 2024 and so far in 2025.
