The problem with infinite recursive promise resolution chains
At this point in the chapter, you should have a strong understanding of how promises work and how to use them to implement the most common control flow constructs. This is therefore the right time to discuss an advanced topic that every professional Node.js developer should know and understand. This advanced topic is about a memory leak caused by infinite Promise
resolution chains. The bug seems to affect the actual Promises/A+ specification, so no compliant implementation is immune.
It is quite common in programming to have tasks that don't have a predefined ending or take as an input a potentially infinite array of data. We can include in this category things like the encoding/decoding of live audio/video streams, the processing of live cryptocurrency market data, and the monitoring of IoT sensors. But we can have much more trivial situations than those, for example, when making heavy use of functional programming...