Normalize console.log/warn/error

console-normalize.js

(function(console) {
  var _apply = Function.prototype.apply;
  if (!console) {
    window.console = {
      log: function() {},
      warn: function() {},
      error: function() {}
    };
  } else
  if (console.log && typeof console.log.apply == 'unknown') {
    window.console = {
      log: function() {
        return _apply.call(console.log, console, arguments);
      },
      warn: function() {
        return _apply.call(console.warn, console, arguments);
      },
      error: function() {
        return _apply.call(console.error, console, arguments);
      }
    };
  }
})(window.console);