https://www.norsknum.org/wp-content/plugins/the-events-calendar/common/src/resources/js/underscore-after.js

1(function(){
2	/**
3	 * If we have a temp variable of type function it means lodash was loaded before underscore so we need to
4	 * remove the reference to underscore from window._ by using the method .noConflict() from underscore, after
5	 * this point we need to revert back the value of window._ which was lodash.
6	 *
7	 * In the second scenario when underscore is loaded before lodash, this will not be executed as window._ will remain as lodash.
8	 *
9	 * On a third scenario when lodash is not included this will either be executed which will allow to use something like: window.underscore || window._ to fallback to the correct value of underscore in the plugins.
10	 */
11	if ( window._lodash_tmp !== false && typeof window._lodash_tmp === 'function' ) {
12		// Remove reference to _ if is underscore
13		window.underscore = _.noConflict();
14		// Restore reference to lodash if present
15		window._ = window._lodash_tmp;
16	}
17})();