Unfortunately the experience of integrating web components into existing applications can be tricky at times. More about this can be read at https://custom-elements-everywhere.com/. In order to accommodate the various issues the Stencil team has created new output target plugins to make the process simpler.
The plugins add additional output targets for each framework binding that is included. This output target will emit a native angular/react/vue library, just like your components were originaly wroten using any of these frameworks.
By using stencil bindings, you can build your components once, and stencil will emit angular/react/vue libraries, this way the consumers of your components can enjoy all the framework features.
Here is an example project repo using the plugins for reference: https://github.com/ionic-team/stencil-ds-plugins-demo