i'm also leaving an example of production app setup here:

import {Level, halua, NewTextHandler, NewJSONHandler, NewWebConsoleHandler} from 'halua'

// an array of handlers that would accept logs

let handlers = [

  NewJSONHandler(writeToZipArchive, {level: Level.Info}), // writes to client-size archive, only logs that are Info-Level or higher

  NewTextHandler(sendToServer, {level: Level.Notice}), // writes to server, only logs tat are Notice-level or higher
  
  NewTextHandler(sendUserAction, {level: Level.Info + 1}), // we will log user actions on a different level, so that it will be easy to filter

  NewTextHandler(sendToErrorMonitoringSystem, {level: Level.Fatal}) // writes to monitoring system

if (debug) {

  handlers.push(NewWebConsoleHandler(self.console)) // writes to web / nodejs console

// now we have to apply the handlers we created

let logger = halua.New(handlers)

// or

halua.setHandler(handlers)

// later, you may call .New on any logger instance to get a new instance