[@xstate/store] Event emitter

[davidkpiano]

You can now emit events from a store:

import { createStore } from '@xstate/store';

const store = createStore({
  context: {
    count: 0
  },
  on: {
    increment: (context, event, { emit }) => {
      emit({ type: 'incremented' });
      return { count: context.count + 1 };
    }
  }
});

store.on('incremented', () => {
  console.log('incremented!');
});

You can make emitted events type-safe via createStore({ types: { … } })

[changeset-bot]

🦋 Changeset detected

Latest commit: 996b511

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@xstate/store	Minor

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[davidkpiano]

@tonivj5 Do you have any thoughts on this to share? (responding to emoji reaction)

[Andarist]

TBH, I'm not sure why this is introduced here. It should be a separate followup PR. I also don't necessarily understand why this one only adds support for schema.emitted. What about schema.events?

[davidkpiano]

I'll move schema types to a separate PR

[davidkpiano]

@Andarist Types are failing

[tonivj5]

hey @davidkpiano! My "corcerns" (or doubts) about these changes were about make zod "first citizen", I love the idea itself, but I personally prefer to avoid "hard" coupling and let it open to integrate other solutions using adapters or some other kind of technique (and I think @colinhacks is drafting an awesome solution to achive it with https://github.com/standard-schema/standard-schema).

Zod is a brilliant piece of software, I've used it before although I love and use other libraries too as https://github.com/sinclairzx81/typebox and I think this field is a moving target that it's going to beneficate from making it elegible.

Anyway, I'm just passing through here so take my reactions and comments with a grain of salt 😅. I love from time to time review your work and check what's cooking here 😸

[davidkpiano]

@tonivj5 You're in luck - we moved the Zod stuff out and that will probably be a separate PR later, if we decide to do it.