* Utility methods and globals from bundled 3rd party libraries.
* @memberOf converse
*
* @typedef ConverseEnv
* @property {function} converse.env.$build - Creates a Strophe.Builder, for creating stanza objects.
* @property {function} converse.env.$iq - Creates a Strophe.Builder with an <iq/> element as the root.
* @property {function} converse.env.$msg - Creates a Strophe.Builder with an <message/> element as the root.
* @property {function} converse.env.$pres - Creates a Strophe.Builder with an <presence/> element as the root.
* @property {function} converse.env.Promise - The Promise implementation used by Converse.
* @property {function} converse.env.Strophe - The [Strophe](http://strophe.im/strophejs) XMPP library used by Converse.
* @property {object} converse.env._ - The instance of [lodash-es](http://lodash.com) used by Converse.
* @property {function} converse.env.f - And instance of Lodash with its methods wrapped to produce immutable auto-curried iteratee-first data-last methods.
* @property {object} converse.env.dayjs - [DayJS](https://github.com/iamkun/dayjs) date manipulation library.