Of Classes and Arrow Functions (a cautionary tale)

Behold, the new hotness! The shapely Arrow Function has driven away the irksome function keyword and (by virtue of lexical this scoping) bought joy to many a JavaScript programmer. Yet, as the following account relates, even the best tools should be used with discretion.

Fixing the JavaScript typeof operator

Working with JavaScript’s typeof operator is a bit like operating a clapped-out old car (or an early model Dell Inspiron). It gets the job done (mostly) and you learn to work around the quirks – but you probably aspire to something better.

In this article I’ll give a brief overview of typeof before introducing a tiny new function which is a fully-loaded, more reliable alternative that works directly with the language internals.