ducksReducer

Combines reducers from redux-ducks modules into a single reducer.

It uses reducers defined as ducks, see ducks-modular-redux (aka isolated modules), and creates a reducer combining their reducers with combineReducers.

Quick Use

Install with npm:

npm install ducks-reducer

import ducksReducer from 'ducks-reducer'

import * as comments from './comments'
import * as posts from './posts'
import * as users from './users'

const reducer = ducksReducer({ comments, posts, users })

// ...do your stuff...

const store = createStore(reducer, preloadedState, enhancer)

// ...do your stuff...

ducksReducer(ducks)

It creates a reducer with combineReducers with all the reducers of the given reducers.

By default, it assumes that ducks are esModules and it looks for the default property which is suposed to be the reducer:

const reducer = ducksReducer({ comments, posts, users })
// ^ this is equivalent to v
const reducer = combineReducers({
  comments: comments.default,
  posts: posts.default,
  users: users.default,
})

If default is not found in any duck, then it assumes that it may be an ES5 module. Then it looks for the duck itself, if it is a function, then it is considered the reducer.

const reducer = ducksReducer({ comments, posts, users })
// ^ this is equivalent to v
const reducer = combineReducers({ comments, posts, users })

If the duck does not have a default and the duck itself is not a function, then it assumes that there is no reducer for that duck.

It supports to combine all three kinds of ducks (es6 modules, es5 modules and with no reducer).

const reducer = ducksReducer({ comments, posts, users })
// ^ this is equivalent to v
const reducer = combineReducers({
  comments: comments.default, // it was es6 module
  posts: posts,               // it was es5 module
                              // users had no reducer
})

See also

ducks-middleware to compose ducks middlewares.

import ducksReducer from 'ducks-reducer'
import ducksMiddleware from 'ducks-middleware'

import * as comments from './comments'
import * as posts from './posts'
import * as users from './users'

const ducks = { comments, posts, users }
const reducer = ducksReducer(ducks)
const middleware = ducksMiddleware(ducks)

// ...do your stuff...

const store = createStore(
  reducer, 
  preloadedState, 
  applyMiddleware(middleware)
)

// ...do your stuff...