Generated by XState Viz: https://xstate.js.org/viz

machine.js

  const Foobar = Machine({
    id: 'fetch',
    initial: 'loading',
    context: {
      patientID: null
    },
    states: {
      loading: {
        on: {
          "": [
            {
              target: "getPatientID", 
              cond: "noPatientID"},
            {
              target: "getPatientProfilePromotionsAndBrands"}
            ]
        }
      },
      getPatientID: {
        onDone: "getPatientProfilePromotionsAndBrands"
      },
      getPatientProfilePromotionsAndBrands: {}
    }
  }, {
    guards: {
      "noPatientID": (context ) => {
        return context.patientID === null;
      }
    }
  });