npm introduces tink, a proof of concept implementation of an install-less installer. tink acts as a replacement for Node.js itself, working from your existing package-lock.json. 

React 16.5 adds support for a new DevTools profiler plugin. This plugin uses React’s experimental Profiler API to collect timing information about each component that’s rendered in order to identify performance bottlenecks in React applications. 

GraphQL Middleware lets you run arbitrary code before or after a resolver is invoked. It improves your code structure by enabling code reuse and a clear separation of concerns.