Simple EventBus in JS

EventBus.js

"use strict";
var EventBus = function() {
  var events = [];
  var p_on = function(eventName, callback) {
    if (!events.some(function(e) {
        return e.name == eventName; })) {
          var new_event = {
            name: eventName,
            cb: callback
          };
          events.push(new_event);
          return [eventName, callback];
    }
  };
  
  var p_emit = function(eventName, args) {
    var match = events.filter(function(e) {
      return e.name == eventName;
    });
    match.forEach(function(m) {
      m.cb(args);
    });
  };

  return {
    on: p_on,
    emit: p_emit
  };
};

Can't remove events atm.