Version Packages

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This PR was opened by the Changesets release GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated.

Releases

xstate@4.20.0

Minor Changes

• 28059b9f #2197 Thanks @davidkpiano! - All spawned and invoked actors now have a .getSnapshot() method, which allows you to retrieve the latest value emitted from that actor. That value may be undefined if no value has been emitted yet.

  const machine = createMachine({
    context: {
      promiseRef: null
    },
    initial: 'pending',
    states: {
      pending: {
        entry: assign({
          promiseRef: () => spawn(fetch(/* ... */), 'some-promise')
        })
      }
    }
  });
  
  const service = interpret(machine)
    .onTransition(state => {
      // Read promise value synchronously
      const resolvedValue = state.context.promiseRef?.getSnapshot();
      // => undefined (if promise not resolved yet)
      // => { ... } (resolved data)
    })
    .start();
  
  // ...

Patch Changes

• 4ef03465 #2240 Thanks @VanTanev! - Preserve StateMachine type when .withConfig() and .withContext() modifiers are used on a machine.

@xstate/react@1.3.4

Patch Changes

• aa3c2991 #2223 Thanks @davidkpiano! - Support for actor refs with the .getSnapshot() method (added for spawned actors in XState version 4.19) is now supported in the useActor(...) hook.