Underscore and Lodash are obvious examples. I don't know if the project maintainers' stated purpose is specifically that, but they are clearly creating big libr

Underscore and Lodash are obvious examples. I don't know if the project maintainers' stated purpose is specifically that, but they are clearly creating big libraries of common utilities. And, surprise surprise, two extremely common problems with frontend NPM projects are: 1) unintentionally importing the entire library instead of the few functions you use, and 2) having many different versions of the libraries in your output bundle because of other dependencies. Hence things like this exist: https://www.npmjs.com/package/babel-plugin-lodash https://www.npmjs.com/package/babel-plugin-lodash https://www.npmjs.com/package/lodash-webpack-plugin https://www.npmjs.com/package/lodash-webpack-plugin