child.stderr <Stream> A Readable Stream that represents the child process's stderr. If the child was spawned with stdio[2] set to anything other than 'pipe', then this will be undefined. child.stderr is an alias for child.stdio[2]. Both properties will refer to the same value.

domain.enter() The enter method is plumbing used by the run, bind, and intercept methods to set the active domain. It sets domain.active and process.domain to the domain, and implicitly pushes the domain onto the domain stack managed by the domain module (see domain.exit() for details on the domain stack). The call to enter delimits the beginning of a chain of asynchronous calls and I/O operations bound to a domain. Calling enter changes only the active domain, and does not alter the domain it

message.rawHeaders The raw request/response headers list exactly as they were received. Note that the keys and values are in the same list. It is not a list of tuples. So, the even-numbered offsets are key values, and the odd-numbered offsets are the associated values. Header names are not lowercased, and duplicates are not merged. // Prints something like: // // [ 'user-agent', // 'this is invalid because there can be only one', // 'User-Agent', // 'curl/7.22.0', // 'Host', // '12

setFlagsFromString(string) Set additional V8 command line flags. Use with care; changing settings after the VM has started may result in unpredictable behavior, including crashes and data loss. Or it may simply do nothing. The V8 options available for a version of Node.js may be determined by running node --v8-options. An unofficial, community-maintained list of options and their effects is available here. Usage: // Print GC events to stdout for one minute. const v8 = require('v8'); v8.setFl

Class: Sign The Sign Class is a utility for generating signatures. It can be used in one of two ways: As a writable stream, where data to be signed is written and the sign.sign() method is used to generate and return the signature, or Using the sign.update() and sign.sign() methods to produce the signature. The crypto.createSign() method is used to create Sign instances. Sign objects are not to be created directly using the new keyword. Example: Using Sign objects as streams: const crypto

path.delimiter The platform-specific path delimiter, ; or ':'. An example on *nix: console.log(process.env.PATH) // '/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin' process.env.PATH.split(path.delimiter) // returns ['/usr/bin', '/bin', '/usr/sbin', '/sbin', '/usr/local/bin'] An example on Windows: console.log(process.env.PATH) // 'C:\Windows\system32;C:\Windows;C:\Program Files\node\' process.env.PATH.split(path.delimiter) // returns ['C:\\Windows\\system32', 'C:\\Windows', 'C:\\Program File

process.getuid() Note: this function is only available on POSIX platforms (i.e. not Windows, Android) Gets the user identity of the process. (See getuid(2).) This is the numerical userid, not the username. if (process.getuid) { console.log(`Current uid: ${process.getuid()}`); }

Class: tls.TLSSocket This is a wrapped version of net.Socket that does transparent encryption of written data and all required TLS negotiation. This instance implements the duplex Stream interface. It has all the common stream methods and events. Methods that return TLS connection metadata (e.g. tls.TLSSocket.getPeerCertificate() will only return data while the connection is open.

fs.renameSync(oldPath, newPath) Synchronous rename(2). Returns undefined.

cipher.update(data[, input_encoding][, output_encoding]) Updates the cipher with data. If the input_encoding argument is given, it's value must be one of 'utf8', 'ascii', or 'binary' and the data argument is a string using the specified encoding. If the input_encoding argument is not given, data must be a Buffer. If data is a Buffer then input_encoding is ignored. The output_encoding specifies the output format of the enciphered data, and can be 'binary', 'base64' or 'hex'. If the output_encod