I&#x27;m the author of the article.<p>&gt; I couldn&#x27;t help reading the emphasized &quot;types&quot; in &quot;optional types&quot; as a yell for the Typescript developers to come back.<p>Not sure what you mean, but I definitely didn&#x27;t have TypeScript in mind. I emphasized &quot;optional&quot; in &quot;optional types&quot; in the bulletpoint where I&#x27;m talking about &quot;getting out of your way&quot;, and &quot;type&quot; in the next bulletpoint where I&#x27;m talking about structure. It was meant to be cute but evidently I failed... Sorry for the confusion.