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

machine.js

const setStatus = assign((context, event, meta) => ({
    statusCode: meta.statusCode,
    statusText: meta.statusText,
  }))
  
  const fetchMachine = Machine({
    id: 'http-request',
    initial: 'start',
    context: {
      statusCode: 0,
      statusText: "",
    },
    states: {
      start: {
        on: {
          '': [
                {
                  target: "503",
                  cond: 'is_service_available',
                },
              ],
        },
      },
      "503": {
        type: "final",
      },
      success: {
        entry: { 
          action: 'setStatus', 
          meta: { 
            statusCode: 200, 
            statusText: "OK" ,
          },
        },
        type: 'final'
      },
    }
  }, {
    guards: {
      is_service_available: (context) => true,
    },
    actions: {
      setStatus
    }
  });