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

machine.js

const everyoneApproved = ctx => ctx.approvals >= 2;

const machine = Machine({
  id: 'approval',
  initial: 'requesting',
  context: {
    approvals: 0
  },
  states: {
    requesting: {
      entry: assign({ approvals: 0 }),
      on: {
        '': {
          target: 'success',
          cond: everyoneApproved
        },
        APPROVE: {
          actions: assign({
            approvals: ctx => ctx.approvals + 1
          })
        },
        REJECT: 'failure'
      }
    },
    success: {
      type: 'final'
    },
    failure: {
      on: {
        RETRY: 'requesting'
      }
    }
  }
})