Estrutura genérica para tratamento de log

script-logger.js

// depends on https://gist.github.com/w35l3y/07442c6adf297703ac7915526a980134

function Logger (script) {
  var debug = script.debug;
  
  this.debug = function () {
    if (debug) {
      console.debug.apply(null, arguments);
      alert(Array.prototype.slice.apply(arguments).join("\n\n"));
    }
  };

  this.info = function () {
    debug && console.log.apply(null, arguments);
  };

  this.warn = function () {
    console.warn.apply(null, arguments);
    debug && alert(Array.prototype.slice.apply(arguments).join("\n\n"));
  };

  this.error = function () {
    console.error.apply(null, arguments);
    alert(Array.prototype.slice.apply(arguments).join("\n\n"));
  };
}