# Changes ## 1.9.4 - [`ae3284d`](https://github.com/mroderick/PubSubJS/commit/ae3284d46054b189e143b405e1bfc6c09643bf77) Use existing root.pubSub when present (#213) (abishek-srinivasan) > > This means that loading `pubsub-js` more than once in the same environment will work as the author expects. A warning will be output on the console to make the developer aware of the duplication. _Released on 2021-11-11._ ## 1.9.3 - [`a810919`](https://github.com/mroderick/PubSubJS/commit/a81091962dd4836da9da6dcf7aafeca4aeb9f815) Fix countSubscriptions > > This was introduced in ad93491c760ebc0429a7e9072b2747b2c2ce0a0a, but had > a bug that was not covered by unit tests. > _Released on 2021-02-18._ ## 1.9.2 - [`83648dd`](https://github.com/mroderick/PubSubJS/commit/83648dd9e48762a8058904debe1b653850bbcf5c) fix #115 don't directly use hasOwnProperty (jianghaoran) _Released on 2020-12-14._ ## 1.9.1 - [`ead7906`](https://github.com/mroderick/PubSubJS/commit/ead79069b79df8c4f7d3324047cdb3b9d4c33571) Fix amd module export (#173) (Sven Busse) > > Co-authored-by: Kevin <58685946+Kepeters@users.noreply.github.com> _Released on 2020-11-13._ ## 1.9.0 - [`3fb21e3`](https://github.com/mroderick/PubSubJS/commit/3fb21e309f8bb9fd32906b25b3a607bc32e8b1a7) Add `subscribeAll` method (Subin Varghese) _Released on 2020-08-17._ ## 1.8.0 * Add `getSubscriptions` * Add countSubscriptions _Released on 2019-12-20._