Introducing Quokka — The Live Scratchpad for JavaScript (free developer tool)
Experimentation is very important in our industry. Before succeeding one time, we may need to fail ten times. This is why reducing the time it takes to run our experiments, can dramatically increase our productivity. ...
This is where Quokka.js comes to rescue. It is a rapid prototyping playground in your editor and in your project's context, with inline reporting, code coverage and rich output formatting.