Most companies (and startups) have a small team for web design and development. Thus, you will be wearing different hats during the development or maintenance of a product.
The advantage is that the EyeDropper allows you to pick the color of any element on the screen, including items that are outside your browser’s window.
Svelte is different from a framework or a library in the sense that it is really a compiler that creates small components for your application. Those components are already optimized for the browser.