I'm using it to build wrappers around d3-based graphs to make it easy for non-software engineers (mechanical, electrical), to create and modify simple PID contr

I'm using it to build wrappers around d3-based graphs to make it easy for non-software engineers (mechanical, electrical), to create and modify simple PID controls. There's PLC programs and interfaces but by and large they're klunky, aren't customizable, or require learning something g like LabView. The custom elements help specifically by encapsulating the (somewhat tedious) d3 graphing and controls connections into simple HTML objects with a simple spec the engineers can lookup. HTML is then declarative and easy for non-programmers to try, test and see immediate feedback. This works out well for creating functional controls systems which can then be cleaned up by experienced developers who can tune the underlying web components. JavaScript libraries all require much more knowledge and generally don't "scale" when you want to add several graphs quickly. Frameworks like Angular2, Vie, or React all require significant learning curve and understanding of the framework generally to get working. Though Vue seems to be the simplest, but web components provide an API which Vue et al can build on by encapsulating more complex HTML/CSS/JS into semi-hidden sub-trees.