process.release An Object containing metadata related to the current release, including URLs for the source tarball and headers-only tarball. process.release contains the following properties: name: a string with a value that will always be 'node' for Node.js. For legacy io.js releases, this will be 'io.js'. sourceUrl: a complete URL pointing to a .tar.gz file containing the source of the current release. headersUrl: a complete URL pointing to a .tar.gz file containing only the header file

agent.freeSockets An object which contains arrays of sockets currently awaiting use by the Agent when HTTP KeepAlive is used. Do not modify.

tls.getCiphers() Returns an array with the names of the supported SSL ciphers. Example: var ciphers = tls.getCiphers(); console.log(ciphers); // ['AES128-SHA', 'AES256-SHA', ...]

buf.writeFloatBE(value, offset[, noAssert])

net.isIPv4(input) Returns true if input is a version 4 IP address, otherwise returns false.

ws.columns A Number that gives the number of columns the TTY currently has. This property gets updated on 'resize' events.

watcher.close() Stop watching for changes on the given fs.FSWatcher.

Event: 'error' <Error> Emitted when an error occurs. The 'close' event will be called directly following this event. See example in discussion of server.listen.

server.getTicketKeys() Returns a Buffer instance holding the keys currently used for encryption/decryption of the TLS Session Tickets

Applications running in Node.js will generally experience four categories of errors: Standard JavaScript errors such as: EvalError: thrown when a call to eval() fails. SyntaxError: thrown in response to improper JavaScript language syntax. RangeError: thrown when a value is not within an expected range ReferenceError: thrown when using undefined variables TypeError: thrown when passing arguments of the wrong type URIError: thrown when a global URI handling function is misused. System err