This seems to be because the DataScienceCentral site stole the content from the original source [1], Toptal. It looks like their copy-paste job messed things up

This seems to be because the DataScienceCentral site stole the content from the original source [1], Toptal. It looks like their copy-paste job messed things up. [1]: https://www.toptal.com/javascript/write-code-to-rewrite-your-code https://www.toptal.com/javascript/write-code-to-rewrite-your...