It's what you already love, only better.

Do you Mei-O?

Meiosis is an architecture pattern to manage the data flow of your web applications. All you need is a simple stream library such as Flyd or Mithril Stream to implement the pattern. You do not need anything else, not even Meiosis itself. Add your favourite virtual dom library (React, Mithril, Snabbdom, Inferno, Preact, etc.) and you are good to go.

Meiosis is more about the approach to managing the data flow rather than about the code in the library. That being said, Meiosis does contain a simple event system that you may find useful. Further, Meiosis and be combined with Meiosis-Tracer to provide development-time tracing capabilities. This is a nifty and useful tool to view what is going on in your application. You can trace back through snapshots of the model and see the changes in the UI. You can also change the model directly in the tool to see the resulting UI, and, if you are using events, simulate behaviour by triggering new events.

For documentation please refer to the Meiosis Wiki.

Try out the examples online:

Example code:

Please post questions and suggestions as Github issues on the meiosis repository.

You can also chat on the Gitter channel.

Please note that Meiosis v0.9.x has been archived and is still available for reference purposes here.

Why the name Meiosis?

I picked the name Meiosis for three reasons:

  1. it's a biology term for a type of cell division; this is an analogy to the idea of dividing your application into smaller pieces;
  2. it's a figure of speech that intentionally understates something or implies that it is lesser in significance or size than it really is, meaning that this library is meant to be small, humble, and not replace what people use, just improve upon it; and
  3. it's a relatively unique name in the JavaScript world, thus making it easy to find information using search engines.


Meiosis is the result of a whole adventure of exploring other architectures. Credit goes to their authors; I am grateful for their work and that of their respective communities.

Meiosis is developed by foxdonut (@foxdonut00) and is released under the MIT license.