Imagine this as my angular controller
app.controller("MyCtrl", function($scope, $modal, $state,) {
});
I am considering creating a global variable that stores commonly used dependencies like
var all = ['$scope', '$modal', '$state']and then using all throughout my code along with additional dependencies if necessary
Could there be any performance drawbacks to having all dependencies included everywhere?
Injecting additional code may have a slight impact on performance, but it is not significant. It is not advisable to declare dependencies globally because they should be clearly visible. Understanding what each dependency is used for should be straightforward without needing to refer to external files.
If there is a need to constantly reuse the same set of dependencies throughout different parts of the codebase, it could indicate potential issues with the structure of the code. Having multiple sections of code rely on the same components suggests a duplication of concerns. This principle extends beyond just injecting $scope or $http repeatedly.
In summary, managing dependencies in this manner is not recommended.
Although my understanding of Angular internals is not extensive, and I haven't taken the time to measure the performance of your specific query, I would guess that there will not be a significant impact on performance. The only potential impact could be on controller instantiation, which occurs just once per view. Even then, we are simply creating a few new objects, so any performance implications should be minimal and not cause for concern.
Avoid injecting variables defined in another controller or service directly. Instead, consider creating a factory and storing your dependencies in the $rootScope.
app.factory('root',function($rootScope, $modal, $state){
$rootScope.modal = $modal;
$rootScope.state = $state;
});
By utilizing $rootScope in all your controllers, you can easily access necessary components. Simply inject 'root' into your main controller for streamlined access. While this shortcut may seem unconventional, it offers an efficient way to handle references without impacting performance significantly.
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