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

machine.js

Machine({
    id: 'game1',
    initial: 'betting',
    context: {
        betAmount: 0,
        counterValue: 0
    },
    states: {
        betting: {
            on: {
                BET: {
                    target: '',
                    actions: assign({ betAmount: 42 })
                },
                START: {
                    target: 'playing',
                    cond: context => context.betAmount > 0
                }
            }
        },
        playing: {
            on: {
                INC: {
                    target: '',
                    actions: assign({ counterValue: context => context.counterValue + 1 })
                }
            }
        }
    }
});