XState child state context

childContext.ts

const Machine = createMachine({
  context: {
    name: '',
  },
  schema: {
    context: {} as { name: string },
  },
  states: {
    A: {
      on: {
        NEXT: 'B',
      },
    },
    B: {
      context: {
        count: 0,
      },
      schema: {
        context: {} as { count: number },
      },
    },
  },
  initial: 'A',
});

// ...

const service = interpret(Machine);

service.state.context // { name: '' }

service.send('NEXT')

service.state.context // { name: '', count: 0 }