Typescript - How to overide declaration in lib.d.ts

Question

Is there any way to override a var declaration in d.ts file?

initTaggingControls() {
    RTE.CanvasEvents.registerListener(RTE.CanvasEvents.editableRegionChangedEvent,     Function.createDelegate(null, this.onCustomTextChanged));
    RTE.CanvasEvents.registerListener(RTE.CanvasEvents.editableRegionBlurEvent,        Function.createDelegate(null, this.onCustomTextChanged));
    RTE.CanvasEvents.registerListener(RTE.CanvasEvents.editableRegionFocusEvent, Function.createDelegate(null, this.onCustomTextChanged));
}

RTE is part of SharePoint. Line declare var RTE: any; does the trick. The problem lies in Function.createDelegate because I cannot declare, or redeclare it.

Function var is already declared in lib.d.ts. Is there any way to override var declaration to add custom methods?

Function.createDelegate is part of Microsoft ajax Library.

Answer 1

I am afraid no. e.g. the following is an error:

declare var String: any;

You can only add features to interfaces / modules. Variables definitions are closed.

I have a work item regarding the same : https://typescript.codeplex.com/workitem/917