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 createStep = ({
    previousStep, 
    nextStep, 
    validation
  }) => ({
    initial: 'editing',
    onDone: {
      target: nextStep,
    },
    states: {
      editing: {
        on: {
          UPDATE: {
            target: 'editing',
            actions: ['updateContext'],
          },
          NEXT: {
            target: 'validating',
          },
          BACK: {
            target: previousStep,
          }
        },
      },
      validating: {
        invoke: {
          id: 'validator',
          src: validation,
          onDone: {
            target: 'valid',
          },
          onError: {
            target: 'invalid',
            actions: ['setErrors'],
          },
        },
      },
      valid: {
        type: 'final',
      },
      invalid: {
        on: {
          UPDATE: {
            target: 'editing',
            actions: [
              'updateContext',
              'clearErrors',
            ],
          },
        },
      },
    },
})

  
const orderJourneyMachine = Machine({
    id: 'orderJourney',
    initial: 'stepOne',
    states: {
      stepOne: {
        ...createStep({ 
          nextStep: '#orderJourney.stepTwo',
          validation: (context,event) => 'validation'
        })
      },
      stepTwo: {
        ...createStep({ 
          previousStep: '#orderJourney.stepOne',
          nextStep: '#orderJourney.stepThree',
          validation: (context,event) => 'validation'
        })
      },
      stepThree: {
        ...createStep({
          previousStep: '#orderJourney.stepTwo',
          validation: (context,event) => 'validation'
        })
      }
    }
  }, {
    actions: {
      updateContext: 'shared',
      clearErrors: 'shared',
      setErrors: 'shared'
    },
    services: {
      validator: 'loads different validator for each step'
    }
  });