substore

Decouple your storage more and better.

install

npm i @hacknlove/substore

Api

All key can be 'deep.dotted.key'. see @hacknlove/deepobject

subStore(key)

Returns the substore at key.

If there is a substore at that key, it returns that substore. If not, it creates a new one.

The substore methods mimic the store methods.

const store = require('@hacknlove/reduxplus')
require('@hacknlove/substore')

const MySubStore1 = store.subStore('someKey')
assert(MySubstore1.i === 1)

const MySubStore2 = store.subStore('someKey')
assert(MySubstore1.i === 2)
assert(MySubStore1 === MySubStore2)

const MySubStore3 = store.subStore('otherKey')
assert(MySubStore1 !== MySubStore3)
assert(MySubstore3.i === 1)

substore.getState()

Returns the state of the substore

substore.setReducer(reducer)

Set a reducer to that substore, to process the actions dispatched in the substore.

substore.dispatch(action)

Dispatch an action in the substore, that will be processed by the reducers of the substore.

substore.useRedux()

React hook that refresh when the state of the substore changes.

substore.useRedux(key)

React hook that refresh when the substore's state's value at key changes.

`substore.hydrate(state, replace = false)

It set the store's state.

If replace === true, it replaces the old state with the new one. If replace !== true, it replaces the old state with the merge of the new one in the old one.

substore.subscribe(callback)

Returns a unsubscribe function.

The callback is called each time the substore's state changes, until unsubscribe funcion is called.

substore.subscribeKey(key, callback)

Returns a unsubscribe function.

The callback is called each time the substore's state's value at key changes, until unsubscribe funcion is called.

substore.clean()

If this is the last substore at its key, it removes all subscriptions, all reducers, stop all useRedux hooks and cleans all substore's substores. After that every substore method will throw new Error('subStore cleaned')

substore.clean(true)

If this is the last substore at its key, it all, including the state

substore.subStore(key)

it returns a new substore at ${substore.key}.${key} that will be cleaned when the parent substore is cleaned.

substore.setMiddleware is undefined

You cannot set a middleware to a substore.

redux DevTools

You will see the subStore actions as ºkey/type

const substore = store.subStore('foo.bar')

substore.dispatch({
  type: 'buz',
  some: {
    more: 'things'
  }
})

/*
store.dispatch({
  type: 'ºfoo.bar/buz',
  key: 'foo.bar'
  subAction: {
    type: 'buz',
    some: {
      more: 'things'
    }
  }
})
*/

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