High-performance ES2015 and beyond: Over the last couple of months the V8 team focused on bringing the performance of newly added ES2015 and other even more recent JavaScript features on par with their transpiled ES5 counterparts.
2017-Understanding V8’s Bytecode: This article explains V8’s bytecode format — which is actually easy to read once you understand some basic concepts.
2017-Garbage collection in V8, an illustrated guide: I would also like to mention that this guide is meant to be beginner friendly, and does not cover every aspect of memory management within V8, and the rest of V8 internals.
A crash course in memory management: To understand why ArrayBuffer and SharedArrayBuffer were added to JavaScript, you need to understand a bit about memory management.