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machine.js

const config = {
  key: 'virtual-funding-as-hub',
  id: 'workflow',
  initial: 'setupJointChannel',
  states: {
    setupJointChannel: {
      initial: 'waitForFirstJointState',
      states: {
        waitForFirstJointState: {
          invoke: {
            src: 'waitForFirstJointState',
            onDone: 'supportState',
            onError: '#workflow.failure'
          }
        },
        supportState: {
          invoke: {id: undefined, src: 'supportState', data: (_, {data}) => data, onDone: 'done'}
        },
        done: {type: 'final'}
      },
      onDone: 'determineDeductions'
    },
    determineDeductions: {
      invoke: {src: 'getDeductions', data: ctx => ctx, onDone: 'fundJointChannel'},
      exit: 'assignDeductions'
    },
    fundJointChannel: {
      type: 'parallel',
      entry: ['watchObjectives', 'assignDeductions'],
      states: {
        fundGuarantorAH: {
          initial: 'waitForObjective',
          states: {
            waitForObjective: {on: {FundGuarantorWithA: 'runObjective'}},
            runObjective: {
              invoke: {
                src: 'ledgerFunding',
                data: (ctx, {data}) => {
                  return {
                    targetChannelId: data.guarantorId,
                    ledgerChannelId: data.ledgerId,
                    deductions: ctx.deductions[role]
                  };
                },
                onDone: 'done'
              }
            },
            done: {type: 'final'}
          }
        },
        fundGuarantorBH: {
          initial: 'waitForObjective',
          states: {
            waitForObjective: {on: {FundGuarantorWithB: 'runObjective'}},
            runObjective: {
              invoke: {
                src: 'ledgerFunding',
                data: (ctx, {data}) => {
                  return {
                    targetChannelId: data.guarantorId,
                    ledgerChannelId: data.ledgerId,
                    deductions: ctx.deductions[role]
                  };
                },
                onDone: 'done'
              }
            },
            done: {type: 'final'}
          }
        }
      },
      onDone: 'fundTargetChannel'
    },
    fundTargetChannel: {
      initial: 'jointChannelUpdate',
      states: {
        jointChannelUpdate: {
          invoke: {src: 'jointChannelUpdate', onDone: 'supportState', onError: undefined}
        },
        supportState: {
          invoke: {id: undefined, src: 'supportState', data: (_, {data}) => data, onDone: 'done'}
        },
        done: {type: 'final'}
      },
      onDone: 'success'
    },
    success: {type: 'final'},
    failure: {}
  }
};
const guards = {};
const customActions = {};
const machine = Machine(config, {guards, actions: customActions});