title: How do you solve angular typescript errors in d.ts files? Specifically msal
body: <p>I am using Msal (<a href="https://github.com/AzureAD/microsoft-authentication-library-for-js" rel="nofollow noreferrer">https://github.com/AzureAD/microsoft-authentication-library-for-js</a>) with the latest angular setup including Typescript 3.1.1 and I get the following error:</p>
  
  <pre><code>ERROR in node_modules/msal/lib-commonjs/UserAgentApplication.d.ts(35,9):
  error TS2717: Subsequent property declarations must have the same type.
  Property 'callBackMappedToRenewStates' must be of type 'any', but here has type '{}'.
  </code></pre>
  
  <p>Looking at the code in the node module I can see the problem but obviously I would rather not edit this file or create a custom typing file just to fix this issue. What should I do?</p>