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

machine.js

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
  
  const fetchMachine = Machine({
    id: 'fetch',
    initial: 'idle',
    context: {
      retries: 0
    },
    states: {
      idle: {
        on: {
          FETCH: 'loading'
        }
      },
      loading: {
        on: {
          BAR: 'foo',
          RESOLVE: 'success',
          REJECT: 'failure'
        }
      },
      success: {
        type: 'final'
      },
      foo: {
        type: 'final'
      },
      failure: {
        on: {
          RETRY: {
            target: 'loading',
            actions: assign({
              retries: (context, event) => {
                if (context.retries > 0) {
                  alert("failed to fetch")
                }
                else {
                return context.retries + 1
                }
              }
            })
          }
        }
      }
    }
  });