Loading Polyfills Only When Needed
▻https://philipwalton.com/articles/loading-polyfills-only-when-needed
“My strategy optimizes for browsers with full support, and treats all other browsers equally. That means for users on fully-supporting browsers I don’t load any polyfills, and for users on partially-supporting browsers, I load the same set of polyfills, regardless of how many of those polyfills that particular browser actually needs.”
#polyfill_browser_JavaScript_clevermarks_progressive_enhancement