zlib.inflateRaw(buf[, options], callback)

server.addContext(hostname, context) Add secure context that will be used if the client request's SNI hostname matches the supplied hostname (wildcards can be used). context can contain key, cert, ca or any other properties from tls.createSecureContext() options argument.

querystring.escape The escape function used by querystring.stringify, provided so that it could be overridden if necessary.

response.statusCode When using implicit headers (not calling response.writeHead() explicitly), this property controls the status code that will be sent to the client when the headers get flushed. Example: response.statusCode = 404; After response header was sent to the client, this property indicates the status code which was sent out.

Class: REPLServer This inherits from Readline Interface with the following events:

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

dns.reverse(ip, callback) Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an array of hostnames. The callback function has arguments (err, hostnames), where hostnames is an array of resolved hostnames for the given ip. On error, err is an Error object, where err.code is one of the DNS error codes.

crypto.getCiphers() Returns an array with the names of the supported cipher algorithms. Example: const ciphers = crypto.getCiphers(); console.log(ciphers); // ['aes-128-cbc', 'aes-128-ccm', ...]

server.connections Stability: 0 - Deprecated: Use server.getConnections() instead. The number of concurrent connections on the server. This becomes null when sending a socket to a child with child_process.fork(). To poll forks and get current number of active connections use asynchronous server.getConnections instead.

response.headersSent Boolean (read-only). True if headers were sent, false otherwise.