better-testing

behavior-watch-anchor.js
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			/**
			* @provides javelin-behavior-phabricator-watch-anchor
			* @requires javelin-behavior
			* javelin-stratcom
			* javelin-util
			* javelin-dom
			*/

			JX.behavior('phabricator-watch-anchor', function() {

			var highlighted;

			function highlight() {
			highlighted && JX.DOM.alterClass(highlighted, 'anchor-target', false);
			try {
			highlighted = JX.$('anchor-' + window.location.hash.replace('#', ''));
			JX.DOM.alterClass(highlighted, 'anchor-target', true);
			} catch (ex) {
			if (ex === JX.$.NotFound) {
			highlighted = null;
			} else {
			throw ex;
			}
			}
			}

			// Defer invocation so other listeners can update the document.
			var fn = function() {
			setTimeout(highlight, 0);
			};
			JX.Stratcom.listen('hashchange', null, fn);
			fn();
			});