Using a Javascript Function from Typescript

javascript, typescript

Solution

You need to tell typescript that this function exists on `window.external` in order to use it. So :

interface External{
    notify: Function;
}

if (window.external.notify != undefined)
    window.external.notify("your message");

Problem

I am trying to build a nice windows phone application with an HTML front end. I want to use TYPESCRIPT to do my processing onto my html page. There is one javascript function which is crucial for my application to work - window.external.notify This method isn't created till runtime I assume, so I build a javascript wrapper function to determine if it exists when it is called. ``` if (window.external.notify != undefined) window.external.notify(msg); ``` The issue is I need to get my Typescript files to see this function. I am using Visual Studio 2012 and I have seen the post - How to use an exported function within the local module The issue is when I just include my javascript file with the function I want to use I get the error TS2095. error TS2095: Build: Could not find symbol Any ideas or help or possible SDKs to circumvent this issue?

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