- https://caniuse.com/#search=customelements
- https://reactjs.org/docs/web-components.html
- https://www.webcomponents.org/
- https://custom-elements-everywhere.com/index.html#react
- https://github.blog/2018-09-06-removing-jquery-from-github-frontend/ (Progressive enhancement, replacing jQuery)
- https://blog.ionicframework.com/build-your-next-design-system-with-web-components/
- https://medium.com/canopy-tax/one-companys-relationship-with-custom-elements-d360baf3b253
- https://github.com/github/time-elements
- https://ba.no (v0) Open console, inspect the first js bundle, search for 'customElements.define('