While working on request #38620, I found the nolyfill tool. It offers a command-line to identify and override polyfill npm packages that are now redundant. Some package authors still support up to Node.js v4, which has entered end of life in 2018. Since we have a recent enough Node.js runtime for our dev environment, we can and should override those packages. It wastes our bandwidth, CPU and storage to keep downloading and installing them when there are native platform equivalents in Node.js (or in our browsers). Using nolyfill lets us override installed packages with very lightweight equivalents.