~javascriptweekly | Bookmarks (3)

A Look at ECMAScript's Iterator Helper Methods — The proposal is several years old, but now at stage 3 in TC39, Iterator Helpers are being implemented and ship with V8 12.2/Chrome 122. The helpers are functions like .map, .filter, .take and .forEach and are made available to any object with Iterator.prototype in its prototype chain.

Static Roots: Objects with Compile-Time Constant Addresses — The V8 blog never disappoints when it comes to deep, technical posts! Olivier Flückiger of the V8 team explains how fundamental, base objects like undefined and true are made more efficient and live in their own read-only heap. A brief look at the sort of thing that makes V8 fast!

Import Assertions and Import Attributes — Shu-yu Guo, of both TC39 and the V8 team at Google, explains how import assertions matured into import attributes and are enabled by default in V8 v12.3.