How to use

_isNumber

function

in

lodash

/**
  * Cancels an order by ID and resolves the returned promise once the cancel is
  * confirmed. Emits an error if not authenticated. The ID can be passed as a
  * number, or taken from an order array/object.
  *
  * @see WSv2#submitOrder
  *
  * @param {object|Array|number} order - order model, array, or ID to be cancelled
  * @returns {Promise} p
  */
 async cancelOrder (order) {
  if (!this._isAuthenticated) {
   throw new Error('not authenticated')
  }

  const id = _isNumber(order)
   ? order
   : Array.isArray(order)
    ? order[0]
    : order.id

  debug(`cancelling order ${id}`)
  this._sendOrderPacket([0, 'oc', null, { id }])

  return this._getEventPromise(`order-cancel-${id}`)
 }