title: How to use node-config in typescript?
body: <p>After installing <code>node-config</code> and <code>@types/config</code>:</p>
  
  <pre><code>yarn add config
  yarn add --dev @types/config
  </code></pre>
  
  <p>And adding config as described in <a href="https://github.com/lorenwest/node-config" rel="noreferrer">lorenwest/node-config</a>:</p>
  
  <pre><code>// default.ts
  export default {
    server: {
      port: 4000,
    },
    logLevel: 'error',
  };
  </code></pre>
  
  <p>When I am trying to use in my app:</p>
  
  <pre><code>import config from 'config';
  
  console.log(config.server);
  </code></pre>
  
  <p>I am getting the error:</p>
  
  <pre><code>src/app.ts(19,53): error TS2339: Property 'server' does not exist on type 'IConfig'.
  </code></pre>