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

machine.js

const fetchCuteAnimals = () => {
  return fetch('https://www.reddit.com/r/aww.json')
    .then(res => res.json())
    .then(data => data.data.children.map(child => child.data))
}
  
const cuteAnimalsMachine = Machine({
  id: 'cuteAnimals',
  initial: 'idle',
  context: {
    cuteAnimals: null,
    error: null
  },
  states: {
    idle: {
      on: { FETCH: 'loading' }
    },
    loading: {
      invoke: {
          id: 'fetchCuteAnimals',
          src: fetchCuteAnimals,
          onDone: {
            target: 'success',
            actions: [
              assign({
              cuteAnimals: (context, event) => event.data
              })
            ]
          },
          onError: {
            target: 'failure',
            actions: [
              assign({
                error: (context, event) => event.data
              })
            ]
          }
      }
    },
    success: {
      type: 'final'
    },
    failure: {
      on: { RETRY: 'loading' }
    }
  }
});