Interop isn&#x27;t just an issue between components, but an issue between the browser and components, crawlers and components, and of course all the thousands of JS libraries out there.<p>What&#x27;s great about Web Components is that they don&#x27;t need custom developer tools. The DOM tree _is_ your component tree, the browser naturally highlights custom elements, just like built-in elements. Editing the DOM and CSS just works. Placing an element into a temp variable and setting properties just works.