BUT, a Vscode plugin that visualizes self-contained components with all its styles intact would be nice: like I open MyComponent.tsx and in the right pane I see it visually, without running the actual webpage or server.
It's early days and you might find that Preview.js can be a little difficult to set up in a large, complex project (working on improving that now) but please send through any feedback on the GitHub repo or Discord server, much appreciated!
SwiftUI and Jetpack Compose also support individual component previews in their respective IDEs. (https://developer.apple.com/documentation/swiftui/previews-i..., https://developer.android.com/jetpack/compose/tooling#previe...)
But nobody uses it because the industry moved to more efficient software after seeing there are better ways to solve the problem.