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

machine.js

const signatureMachine = Machine({
  id: 'signature',
  initial: 'init',
  context: {
    signature: null,
    isExpectedRecipient: null
  },
  states: {
    init: {
      on: {
        NEXT: 'signature',
        BACK: {
          actions: [
            sendParent('BACK')
          ]
        }
      }
    },
    signature: {
      on: {
        BACK: 'init',
        SAVE_SIGNATURE: {
          target: 'confirmation',
          actions: assign({
            signature: (_, { signature }) => signature
          })
        }
      }
    },
    confirmation: {
      on: {
        BACK: 'signature',
        CONFIRM_RECIPIENT: {
          actions: [
            assign({
              isExpectedRecipient: (_, { isExpectedRecipient }) =>
                isExpectedRecipient
            }),
            sendParent('SIGNATURE.INFO',)
          ]
        }
      }
    }
  }
});