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Releases

[email protected]

Minor Changes

• #5387 53dd7f1 Thanks @farskid! - Adds system.getAll that returns a record of running actors within the system by their system id

  const childMachine = createMachine({});
  const machine = createMachine({
    // ...
    invoke: [
      {
        src: childMachine,
        systemId: 'test'
      }
    ]
  });
  const system = createActor(machine);
  
  system.getAll(); // { test: ActorRefFrom<typeof childMachine> }

@xstate/[email protected]

Minor Changes

• #5323 cb08332 Thanks @davidkpiano! - Added support for effect-only transitions that don't trigger state updates. Now, when a transition returns the same state but includes effects, subscribers won't be notified of a state change, but the effects will still be executed. This helps prevent unnecessary re-renders while maintaining side effect functionality.

  it('should not trigger update if the snapshot is the same even if there are effects', () => {
    const store = createStore({
      context: { count: 0 },
      on: {
        doNothing: (ctx, _, enq) => {
          enq.effect(() => {
            // …
          });
          return ctx; // Context is the same, so no update is triggered
          // This is the same as not returning anything (void)
        }
      }
    });
  
    const spy = vi.fn();
    store.subscribe(spy);
  
    store.trigger.doNothing();
    store.trigger.doNothing();
  
    expect(spy).toHaveBeenCalledTimes(0);
  });