Pattern for managing transient local state in redux
npm install redux-ephemeral
Library for managing transient local state in redux. Uses a hash array mapped trie internally, so it is extremely performant by default, but you still deal only with plain JS objects, and your redux state atom is still serializable in the same way.
$ npm install redux-ephemeral
Wrap your root reducer with redux-ephemeral, like so:
``javascript
import ephemeral from 'redux-ephemeral'
function reducer (state, action) {
// your app's reducer logic
}
export default ephemeral('ui', reducer)
`
The 'ui' argument specifies where in your state to mount your ephemeral state. So, in the example above, all transient/local state will be mounted under state.ui.
redux-ephemeral exports three action creators:
* createEphemeral(key, state) - Initialize the ephemeral state at path key to state
* - Direct an ephemeral action to the path specified by key, and reducer it with reducer when it gets theredestroyEphemeral(key)
* - Destroy the chunk of ephemeral state specified by key
This library can be used directly in components, but it is intended to be a low-level library that is consumed by a higher-level local state abstraction. Check out virtex-local for such an example.
It also exports two helper functions:
* lookup(state, key) - Takes the state map and returns the value for the local state at key.isEphemeral(action)` - Check whether or not an action is an ephemeral action.
*
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