wait-on is a cross platform command line utility and Node.js API which will wait for files, ports, sockets, and http(s) resources to become available
Keeps track of a server's open sockets so they can be destroyed at a moment's notice.
Javascript mocking library for websockets and socket.io
normalized JS Object and JSON message and event protocol for ES6+ node.js, browsers, electron, vanialla js, react.js, components, actions, stores and dispatchers