cates that the argument must be an array and that all items in that array must be strings. Angled brackets after an <code>Object</code> indicate a map. For example, <code>Object&lt;String,Component&gt;</code> indicates that the argument must be an object, whose keys are strings and values are <a href="components.html">components</a></p>
<p>Sometimes non-native types may appear to indicate that a specific object signature is required. For example, <code>Vnode</code> is an object that has a <a href="vnodes.ht