Node.js free download for Mac


15 January 2021

Scalable event-driven JavaScript runtime.


As an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications

Node.js is similar in design to, and influenced by, systems like Ruby's Event Machine and Python's Twisted. Node.js takes the event model a bit further. It presents an event loop as a runtime construct instead of as a library. In other systems, there is always a blocking call to start the event-loop. Typically, behavior is defined through callbacks at the beginning of a script, and at the end a server is started through a blocking call like EventMachine::run(). In Node.js, there is no such start-the-event-loop call. Node.js simply enters the event loop after executing the input script. Node.js exits the event loop when there are no more callbacks to perform. This behavior is like browser JavaScript - the event loop is hidden from the user

HTTP is a first-class citizen in Node.js, designed with streaming and low latency in mind. This makes Node.js well suited for the foundation of a web library or framework

Node.js being designed without threads doesn't mean you can't take advantage of multiple cores in your environment. Child processes can be spawned by using our child_process.fork() API, and are designed to be easy to communicate with. Built upon that same interface is the cluster module, which allows you to share sockets between processes to enable load balancing over your cores

What's new in Node.js

Version 15.6.0:
Notable Changes
  • Add 'overlapped' stdio flag
  • Support AbortSignal in fork
  • Implement basic secure heap support
  • Fixup bug in keygen error handling
  • Introduce X509Certificate API
  • Implement randomuuid
  • Update release key for Danielle Adams
  • Add dnlup to collaborators
  • Add panva to collaborators
  • Add yashLadha to collaborator
  • Set lifo as the default scheduling strategy in Agent
  • Support abortSignal in server.listen
  • Add direct access to rss without iterating pages
  • Fix native serdes constructors
  • Complete list of changes can be found here

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