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 createTicketQuantityMachine = (max = 19) => Machine({
    context: {count: 0},
    initial: 'idle',
    states: {
      idle: {
        on: {
          INCREMENT: {
            actions: 'increment',
            cond: 'canIncrement'
          },
          DECREMENT: {
            actions: 'decrement',
            cond: 'canDecrement'
          }
        }
      }
    }}, {
    actions: {
      increment: assign({
        count: (context) => context.count + 1
      }),
      decrement: assign({
        count: (context) => context.count - 1
      }),
    },
    guards: {
      canIncrement: (context) => context.count < max,
      canDecrement: (context) => context.count > 0,
    }
  });
  
  
  const quantityMachine = createTicketQuantityMachine()