More info: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/sc...
It seems like a handy way to make my code match the code in documentation that assumes a Node environment.
https://github.com/guybedford/es-module-shims
https://webkit.org/blog/13878/web-push-for-web-apps-on-ios-a...
More info: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/sc...