There are two things you should do with your AngularJS 1.x app before deploying to production to increase your performance.
First we need to disable debugging data.
/* app.js */
yourApp.config(['$compileProvider'], function($compileProvider){
$compileProvider.debugInfoEnabled(false);
}]);
Secondly we should turn on strict-di
mode to get performance increases to dependency injection.
<div ng-app="yourApp" ng-strict-di>
<!-- etc. -->
</div>
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