subspace(mapState, [namespace])

Creates a subspace that isolates state and actions from the root Redux store.

Arguments

1. mapState (Function|string): A selector to derive the state of the subspace. The selector is provided the parent state as the first parameter and the root state as the second parameter. If passed as a string, a selector is created for that key on the provided state.
2. namespace (string): An optional namespace to scope actions with.

If mapState is passed as a string and no namespace is provided, the provided string is used for both. To prevent this, pass null as the second parameter.

Returns

(Function): A function that takes a store or subspace and returns a new subspace.

Examples

import { subspace } from 'redux-subspace'
import store from 'somewhere'

const subAppStore = subspace((state) => state.subApp)(store)

import { subspace } from 'redux-subspace'
import store from 'somewhere'

const subAppStore = subspace((state, rootState) => ({ ...state.subApp, root: rootState }))(store)

import { subspace } from 'redux-subspace'
import store from 'somewhere'

const subAppStore = subspace((state) => state.subApp, 'subApp')(store)

import { subspace } from 'redux-subspace'
import store from 'somewhere'

const subAppStore = subspace('subApp', 'subAppNamespace')(store)

import { subspace } from 'redux-subspace'
import store from 'somewhere'

const subAppStore = subspace('subApp')(store)