[@xstate/store] Add reset extension

[davidkpiano]

Add reset store extension for resetting store context to its initial state via .with(reset()).

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

const store = createStore({
  context: { count: 0, user: null },
  on: {
    inc: (ctx) => ({ ...ctx, count: ctx.count + 1 }),
    login: (ctx, e: { user: string }) => ({ ...ctx, user: e.user })
  }
}).with(reset());

store.trigger.inc();
store.trigger.reset(); // resets to { count: 0, user: null }

Supports custom reset logic via to for partial resets:

.with(reset({
  to: (initial, current) => ({ ...initial, user: current.user })
}))

[changeset-bot]

🦋 Changeset detected

Latest commit: 179a28e

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

This PR includes changesets to release 7 packages

Name	Type
@xstate/store	Minor
@xstate/store-angular	Patch
@xstate/store-preact	Patch
@xstate/store-react	Patch
@xstate/store-solid	Patch
@xstate/store-svelte	Patch
@xstate/store-vue	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR