Prevent executing the same command twice

initializer.js

define([
    "dojo/_base/declare",
    "epi/_Module",
    "dojo/when",
    "epi-cms/contentediting/command/Publish"
], function (
    declare,
    _Module,
    when,
    PublishCommand
) {
    return declare([_Module], {
        initialize: function () {
          var originalExecute = PublishCommand.prototype._execute;
          PublishCommand.prototype._execute = function () {
              if (this.get("isRunning")) {
                  return;
              }
              this.set("isRunning", true);
              when(originalExecute.apply(this, arguments)).then(function () {
                  this.set("isRunning", false);
              }.bind(this))
          }
        }
    });
});

module.config

<?xml version="1.0" encoding="utf-8"?>
<module clientResourceRelativePath="1.0.0">

  <clientModule initializer="my-addon.initializer">
    <moduleDependencies>
      <add dependency="CMS" type="RunAfter" />
    </moduleDependencies>
 </clientModule>

  <dojo>
    <paths>
      <add name="my-addon" path="Scripts" />
    </paths>
 </dojo>
</module>