One <div>. Many possibilities.

iOS/Android image picker with support for camera, video compression, multiple images and cropping

A Javascript Image Cropper

Tinder-like swipe cards for your React Native app

Write AVA tests for redux (and redux-thunk) pretty quickly. (Based on https://github.com/sotojuan/redux-ava)

Conceitos de Código Limpo adaptados em JavaScript (Tradução PT-BR)