Wide package of JS ES5/ES6 + React.js programming challenges ranging from simple problems to comprehensive projects. While the package has being developed as being a JavaScript student at the Armenian Code Accademy, it is a living folder; new challanges apear across time.
More React Challenges: https://github.com/taryegh/react-practice
TypeScript Challenges: https://github.com/taryegh/TypeScript-practice