Table of Contents

• Nodejs compatibility
• Supported modules
• Notable differences

Nodejs compatibility

HopScript fully supports the Nodejs module system and the Nodejs asynchronous programming model (i.e., the asynchronous event loop).

Supported modules

Hop.js supports the following Node.js modules:

• Buffer
• Child Processes
• Cluster
• Console
• Crypto
• DNS
• Domain
• Events
• File System
• Globals
• HTTP
• HTTPS
• Modules
• Net
• OS
• Path
• PROCESS
• Punycode
• Query Strings
• Stream
• String Decoder
• Timers
• TLS/SSL
• TTY
• UDP/Datagram
• URL
• Utilities
• VM

Notable differences

The default behaviour of Hop.js is to launch an HTTP server. To mimic Node.js, use the --no-server option to disable the launch of the Hop.js built-in server, and automatically terminate the process when all events are processed.

Hop.js eval function does not access the lexical scope surrounding the evalcall. For Example:

function foo() {
  var x = false;
  return( eval( 'x' ));
  }

console.log( foo() );

foo() would return falsewith Node.js, and truewith Hop.js.