Everybody had a classmate that knew everything about anything, much like Hermione from the Harry Potter series. While your project is the main character, Hermione.js serves the knowledge.

ESLint 2 comes with auto configuration feature and introduces code path analysis.

Autotrack for analytics.js attempts to leverage as many Google Analytics features as possible while requiring minimal manual implementation. It gives developers a foundation for tracking data relevant to today's modern web.

ESLint plugin for Lodash. Can also be used to prepare for Lodash v3 to Lodash v4 migration.

Object.keys() now up to 2x faster
ES6 rest parameters up to 8-10x faster
Object.assign() ~ as fast as _.assign()

It's hard to solve a problem when important details are missing. Now project maintainers can add templates for Issues and Pull Requests to projects, helping contributors add the right details at the start of a thread. This is the first of many improvements to Issues and Pull Requests that we're working on based on feedback from the community.

The next React release will be 15.0.0. Moving from minor versions (0.14) to major helps indicate commitment to stability and gives the flexibility to add new backwards-compatible features in minor releases.

What is linting? Why should we lint our stylesheets? Linting helps reduce silly errors in codebases, and improves coding quality by enforcing good coding rules, and practices.
Stylelint is a super extendable, and unopinionated CSS linter written in JavaScript. Because it’s powered by JavaScript instead of Ruby, it’s much, much faster than scss-lint.

Chris Ashton describes a cross-browser testing strategy that is not only less labour-intensive but more effective at catching bugs.

Making responsive emails is hard, especially since email clients on mobile (like Gmail, Yahoo or Outlook.com) don’t support media queries. An hybrid approach, a Gmail first strategy, or a responsive email without media queries are great ways to adapt to this situation.

Georgie Luhur explains how web developers can use ARIA roles and attributes within their HTML effectively today.

Rachel Andrew looks at the basics of HTTP/2 and what to consider changing in your workflow in the short and long term.

Massimo Cassandro demonstrates how to make use of jsPDF, a JavaScript library for generating PDF documents from web pages.

Inspired by the classic first-person shooter Wolfenstein 3D...

Imagine if when Picasso was learning to paint, we told him what style he should paint in. Would we have cubism?

Grunt, Gulp, Broccoli, Brunch and the like all require you to fit your tasks into their paradigms and configurations. Each has it’s own syntaxes, quirks and gotchas that you need to learn. This adds code complexity, build complexity and makes you focus on fixing tooling rather than writing code.

Run tests for multiple versions of Node.js in local env.
Automatically update testen badge in your README after running tests.

MERN is a scaffolding tool which makes it easy to build isomorphic apps using Mongo, Express, React and NodeJS. It minimizes the setup time and gets you up to speed using proven technologies.