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

machine.js

// https://xstate.js.org/viz/?gist=0f8b8f754118cad1507fd3b77fb5ad72
  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions
  // - XState (all XState exports)
  
  const inputMachine = Machine({
    id: 'inputMachine',
    initial: 'idle',
    context: {
      value: 0,
      maxValue: 10,
    },
    states: {
      idle: {
        on: {
          '': [
            { target: "valid", cond: (c, e) => c.value !== 0 && c.value < c.maxValue },
            { target: "error", cond: (c, e) => c.value >= c.maxValue }
          ],
          UPDATE: {
            target: "idle",
            actions: assign({
              value: (ctx, event) => ctx.value = event.data
            })
          }
        }
      },
      // extend these two to communicate with a parent Machine
      valid: {},
      error: {}
    }
  }, {
    guards: {
      inputValid: (ctx, e) => ctx.value < ctx.maxValue
    }
  });