Make the store persistant

You can easily make your store's any segment to be persisted by persisted function.

persisted

import { createStorm, persisted } from 'event-storm';

const createPersistedStore = persisted(createStorm)({
  storageKey: 'some_store_key',
  beforeunload: state => ({
    users: state.users,
  }),
});

const defaultState = {
  users: [],
  age: 15,
  loading: false,
};

const store = createPersistedStore(defaultState);

IPersistOptions

interface IPersistOptions<T> {
  storageKey: string;
  beforeunload: (storm: IStormState<T>) => Partial<IStormState<T>>;
  permanent?: boolean,
}

Methods

Method	Type	Description
beforeunload	(storm: IStormState<T>) => Partial<IStormState<T>>	method is called right before the browser unload event. It will receive the current storm state as an argument. It can return any storm fragment as a return value. The return value will be persisted.

Properties

Property	Type	Required	Description
storageKey	string	✅	Specifies where to keep the persisted data in the storage
permanent	boolean	❎	By default the sessionStorage is used to store the persisted data. To change the storage to localStorage you can set the permanent property to true: