example1 state machine

example1-state-machine.ts

const machine = Machine<Context, Scheme, Event>({
  strict: true,
  initial: 'X',
  context: DEFAULT_CONTEXT,
  states: {
    X: {
      always: {
        cond: CONDITIONS.IS_DONE,
        target: 'DONE',
      },
      on: {
        PLAYED: {
          cond: CONDITIONS.IS_VALID_PLAY,
          target: 'O',
          actions: [
            ACTIONS.ASSIGN_MATCH_SCORE('X'),
            ACTIONS.ASSIGN_BOARD('X'),
          ],
        },
      },
    },
    O: {
      always: {
        cond: CONDITIONS.IS_DONE,
        target: 'DONE',
      },
      on: {
        PLAYED: {
          cond: CONDITIONS.IS_VALID_PLAY,
          target: 'X',
          actions: [
            ACTIONS.ASSIGN_MATCH_SCORE('O'),
            ACTIONS.ASSIGN_BOARD('O'),
          ],
        },
      },
    },
    DONE: {
      on: {
        RESTARTED: {
          target: 'X',
          actions: [
            ACTIONS.ASSIGN_DEFAULT_CONTEXT,
          ]
        }
      }
    },
  },
})