As a couple of people point out in the comments, this is an explanation of needlessly complex machinery for achieving better bundling. If you're using a bundler that understands reasonably current technology (ES modules) like webpack (4), Rollup, etc., it "just works" if you use the alternative lodash-es packaging. A few years ago it may have been reasonable and necessary to pick up something like a specific webpack plug-in to use a specific library efficiently, that seems "retro" in 2018. We should all raise our expectations.
Here's an example of lodash-es in use, this is in a Angular example program but there is nothing Angular specific about the use of lodash.
Here's an example of lodash-es in use, this is in a Angular example program but there is nothing Angular specific about the use of lodash.
https://github.com/AngularBootCamp/filtered-list-via-observa...