While I agree with you, tree shaking is relatively new in the JavaScript world thanks to Webpack 2 and Rollup.js before that, if you had a dependency you brough

While I agree with you, tree shaking is relatively new in the JavaScript world thanks to Webpack 2 and Rollup.js before that, if you had a dependency you brought it's whole lib into your project whether you used one method or all of them. So just including Lodash wasn't an option for people who cared about loading times for their users. A 17 line module was.