gistfile1.txt

    let vehicles = groupBy(this.state.vehicles, 'license_plate')
    vehicles = Object.keys(vehicles).map(license_plate => {
      const activeVehicles = vehicles[license_plate]
        .filter(notDeleted)
      
      if (!activeVehicles.length) {
        const byDeleted = dateFrom('deleted_at')
        return vehicles[license_plate].sort(byDeleted)[0]
      }

      return activeVehicles[0]

    })