While working on setting up a grid within a panel, I encountered an issue where even after destroying the grid, a reference to it is still retained inside the initial configuration for the panel. This prevents proper cleanup of resources. Is there a method to prevent the creation of this initial configuration or a way to clear it to ensure that objects it holds references to are effectively cleaned up?
To properly handle nullifying in Base destructor, one can use a closure to work around the non-existent real class of Base. By overriding it through Ext.define, we can achieve this:
(function() {
var oldDestroy = Ext.Base.destroy;
Ext.Base.destroy = function() {
this.config = this.initialConfig = null;
oldDestroy.call(this);
};
})();
If memory leaks are causing issues in your application, I strongly recommend upgrading to Ext JS 6. A significant portion of component leaks have been addressed in this version, and backporting these fixes may lead to major compatibility concerns.
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