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Editorial Team
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Asked: 2026-06-12T15:19:35+00:00

I am trying to use TypeScript in a Windows 8 app (html5/JS) I have

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I am trying to use TypeScript in a Windows 8 app (html5/JS)

I have looked at the sample app

The app uses a typing definition file for WinJS (WinJS.d.ts).

I need to edit this file as it is not complete. However the file has an interface extension for the Type Element adding a property for winControl(typed to any).

This line gets and error of “Duplicate identifier ‘winControl'” I am unable to locate and other place this is.

Also, there are locations in my code that i get errors as there is no property named winControl

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1 Answer

  1. Editorial Team

    To solve this problem you must

    1. remove lib.d.ts from anywhere in your project path (or the path to your winrt.d.ts) folder. It is conflicting with the definitions in your local typescript install folder

    2. make sure that you do not have any of your ts (and JS files) identified as content as they will be copied to your deployment directory and will cause the same duplicate issue (there will be two definitions of everything).

    I would suggest opening the output window before you do a build. It will let you see what is causing issues since tcs is being run as a command line behind the scenes for you

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