Ability to pass callback function during store creation for store initialisation and updates

[KennyYe]

We would like the ability to pass in certain callback functions when stores are created that would track:

1. Store initialisation
2. Store changes

const onStoreInit = (storeInstance) => {
    // do something when store initialises
};

const onStoreUpdate = (storeInstance, actionDispatched) => {
    // do something when store updates
};

export const store = createStore({
    ...
    name: 'my-store',
    onStoreInit,
    onStoreUpdate,
});

This would allow us to implement custom logic into our stores changing without having to mount many useEffects to track and respond to these changes.

[theKashey]

Container has similar abilities, except onUpdate is triggered when container props are changed, not when it's state is updated.

You shall not be able to send a good message from a static function defined as a part of the store due to the absence of "context" and thus the necessity to communicate with other elements using globals. Can we do our best to use fewer globals?

[KennyYe]

Right hooking into createContainer would be a much better solution. perhaps there would be another option for onStoreUpdate as you mentioned that onUpdate only listens for changes to the container props.

[albertogasparin]

This has been merged as part of the improved Store/Container API #198 .
Basically by using the new containedBy attribute on store creation you can provide additional handlers:

• onInit
• onUpdate
• onDestroy
• onContainerUpdate

See docs. It will be available on v2.7.0+