// Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
    const fetchMachine = Machine({
    id: 'fetch',
    initial: 'idle',
    context: {
      item: undefined,
      retries: 0
    },
    states: {
      idle: {
        on: {
          FETCH: 'loading',
        },
        after: {
          1000: { target: 'loading' }
        }
      },
      loading: {
        on: {
          RESOLVE: 'item',
          REJECT: 'failure'
        }
      },
      item: {
        on: {
          FETCH: 'loading'
        }
      },
      failure: {
        on: {
          RETRY: {
            target: 'loading',
            actions: assign({
              retries: (context, event) => context.retries + 1
            })
          }
        }
      }
    }
  });
  
  
  const orderMachine = Machine({
    id: 'order',
    context: {
      item: undefined
    },
    initial: 'loading',
    states: {
      loading: {
        invoke: {
          id: 'fetch',
          src: fetchMachine,
          onDone: {
          target: 'nuu',
          actions: assign({ item: (context, event) => event.data })
          },
        }
      },
      nuu: {
        on: {
          MAKE_PENDING: 'pending',
        },
      },
      pending: {
        on: {
          ACCEPT: 'accepted',
          CANCEL: 'canceled',
          HOLD: 'held',
        }
      },
      accepted: {
        on: {
          UNPEND: 'pending',
          PROCESS: 'in_process',
          CANCEL: 'canceled',
          HOLD: 'held',
        }
      },
      in_process: {
        on: {
          COMPLETE: 'completed',
          CANCEL: 'canceled',
          HOLD: 'held',
        }
      },
      completed: {
        on: {
          DELIVER: 'delivered',
          PICKUP: 'delivered',
          CANCEL: 'canceled',
          HOLD: 'held',
        }
      },
      held: {
        on: {
          UNHOLD: 'completed'
        }
      },
      delivered: {
        type: 'final'
      },
      canceled: {
        type: 'final'
      },
    }
  })