Add a "Code Splitting" docs page.

[markerikson]

I would like a new docs page added that describes how to code-split Redux reducers (and possibly other pieces of Redux-related code as well). We'd add it under the "Recipes" section for now, but move it under the future "Real-World Apps" section described in the docs revamp in #2590 when we get that section up.

This page should explain the general principles and technique for code-splitting reducers (re-running combineReducers with the new slice reducers, etc). It should also point to 2-3 of the best-looking existing userland libraries for handling this more automatically, such as https://redux-dynamic-modules.js.org and https://github.com/ioof-holdings/redux-dynamic-reducer .

For reference on this topic, I have links to a few existing articles on code-splitting reducers in the Redux Reducers page in my links list, and a bunch of links to existing libraries in the Reducers#Dynamic Reducer Injection section of my addons list.

Please comment here if you're interested in writing this page!

[abettadapur]

I can help in writing this page. I can get started over this weekend

[markerikson]

Cool, thanks!

[JustFly1984]

Hello everyone! I think my question could be related:

• How could you split reducers based on immutable.js Map as root?

I have pretty much 4 separate redux stores:

• static
• account
• manager
• admin

account and manager reducers are growing intensively, so I would like to separate some parts to reduce bundle size

[markerikson]

@JustFly1984 : there shouldn't be any difference in how you split a state tree with a plain JS object root and an Immutable.js Map root, other than needing to use a specialized version of combineReducers() to generate the root reducer.

[abettadapur]

Started work here

[markerikson]

Merged in #3190 .