statelyai/xstate @xstate/store@2.4.0

on GitHub

Minor Changes

• #5064 84aca37d0b02cb9cd5a32c8fd09e487bd8fe2a47 Thanks @davidkpiano! - There is a new single-argument config API for createStore(config):

  const store = createStore({
    // Types (optional)
    types: {
      emitted: {} as { type: 'incremented' }
    },
  
    // Context
    context: { count: 0 },
  
    // Transitions
    on: {
      inc: (context, event: { by: number }, enq) => {
        enq.emit({ type: 'incremented' });
  
        return { count: context.count + event.by };
      },
      dec: (context, event: { by: number }) => ({
        count: context.count - event.by
      })
    }
  });

• #5064 84aca37d0b02cb9cd5a32c8fd09e487bd8fe2a47 Thanks @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!');
  });