Helen Hou-SandÃ, WordPress 4.7 release lead, wants to evaluate the usefulness of the current WordPress REST API merge proposal. This is my opinion on this.
Facebook open sourced Yarn, a new dependency manager for JavaScript. This post includes everything relevant I read about it.
Want to know (and improve) the quality of the JavaScript code in your WordPress projects? Use ESLint for this, and respect the WordPress Coding Standards.