Difference between tsconfig.json and tsconfig.app.json files in Angular : <p>I'm a newbie in Angular. I used <code>angular-cli</code> to learn about angular and I found the files <code>tsconfig.json</code> and <code>tsconfig.app.json</code>. Both of these are typescript related and I found <a href="https://stackoverflow.com/questions/48798431/use-of-tsconfig-app-json">this link</a> useful.</p>

<p>But why two such files has been used? Why can't the configurations in these two files be combined in one file? Please help me figure this out.</p>
