Hop.js: a multitier JavaScriptHop.js (aka Hop) is: A multitier JavaScript: a single code runs on the client and the server. A compliant JavaScript implementation: EcmaScript 5.1 compliant; EcmaScript 6 features (modules, async/await, proxy objects, ...); Nodejs compatibility. An extended JavaScript: builtin HTML: native HTML syntax support and multitier dom. server-side web workers. native websock