why declaration can not be used together with isolatedModules in typescript? : <p><strong>declaration</strong> is used to generate type file, and <strong>isolatedModules</strong> mean all file should be a separate module. Why do these two options use together?</p>

<pre><code>error TS5053: Option 'declaration' cannot be specified with option 'isolatedModules'.
</code></pre>
