How to use

_isFinite

function

in

lodash

/**
  * Authenticates all existing & future sockets with the provided credentials.
  * Does nothing if an apiKey/apiSecret pair are already known.
  *
  * @param {object} args - arguments
  * @param {object} args.apiKey - saved if not already provided
  * @param {object} args.apiSecret - saved if not already provided
  * @param {object} [args.calc] - default 0
  * @param {object} [args.dms] - dead man switch, active 4
  */
 auth ({ apiKey, apiSecret, calc, dms } = {}) {
  if (this._socketArgs.apiKey || this._socketArgs.apiSecret) {
   debug('error: auth credentials already provided! refusing auth')
   return
  }

  this._socketArgs.apiKey = apiKey
  this._socketArgs.apiSecret = apiSecret

  if (_isFinite(calc)) this._authArgs.calc = calc
  if (_isFinite(dms)) this._authArgs.dms = dms

  this._sockets.forEach(s => {
   if (!s.ws.isAuthenticated()) {
    s.ws.setAPICredentials(apiKey, apiSecret)
    s.ws.updateAuthArgs(this._authArgs)
    s.ws.auth()
   }
  })
 }

 : msg[msg.length - 1]
if (!_isFinite(authSeq)) {
 debug('recv public seq # %d', seq)
} else {

const authArgs = { ...this._authArgs }
if (_isFinite(calc)) authArgs.calc = calc
if (_isFinite(dms)) authArgs.dms = dms

  : msg[msg.length - 1]
 if (!_isFinite(seq)) return null
if (!_isFinite(authSeq)) return null
if (authSeq === 0) return null // still syncing

prepareAmount(available),
...(_isFinite(value) ? [
 prepareAmount(value),
 currency !== valueCCY