AssemblyScript
Setting everything
Node.js
Node is a powerful runtime for running javascript outside of the browser.  There are several ways to install it on your computer, but I reccomend nvm, which lets you easily manage the versions of node and its package manager npm .
Once set up a node project can be set up as simply as:
$ npm install
WebAssembly Studio
For now we will use the awesome website created by Mozilla to show off WebAssembly.