fs.truncateSync(path, len) Synchronous truncate(2). Returns undefined.

console.warn([data][, ...]) The console.warn() function is an alias for console.error().

os.homedir() Returns the home directory of the current user.

fs.ftruncate(fd, len, callback) Asynchronous ftruncate(2). No arguments other than a possible exception are given to the completion callback.

cluster.worker <Object> A reference to the current worker object. Not available in the master process. const cluster = require('cluster'); if (cluster.isMaster) { console.log('I am master'); cluster.fork(); cluster.fork(); } else if (cluster.isWorker) { console.log(`I am worker #${cluster.worker.id}`); }

socket.dropMembership(multicastAddress[, multicastInterface]) multicastAddress <String> multicastInterface <String>, Optional Instructs the kernel to leave a multicast group at multicastAddress using the IP_DROP_MEMBERSHIP socket option. This method is automatically called by the kernel when the socket is closed or the process terminates, so most apps will never have reason to call this. If multicastInterface is not specified, the operating system will attempt to drop membersh

crypto.createHmac(algorithm, key) Creates and returns an Hmac object that uses the given algorithm and key. The algorithm is dependent on the available algorithms supported by the version of OpenSSL on the platform. Examples are 'sha256', 'sha512', etc. On recent releases of OpenSSL, openssl list-message-digest-algorithms will display the available digest algorithms. The key is the HMAC key used to generate the cryptographic HMAC hash. Example: generating the sha256 HMAC of a file const fil

response.end([data][, encoding][, callback]) This method signals to the server that all of the response headers and body have been sent; that server should consider this message complete. The method, response.end(), MUST be called on each response. If data is specified, it is equivalent to calling response.write(data, encoding) followed by response.end(callback). If callback is specified, it will be called when the response stream is finished.

Class: Domain The Domain class encapsulates the functionality of routing errors and uncaught exceptions to the active Domain object. Domain is a child class of EventEmitter. To handle the errors that it catches, listen to its 'error' event.

crypto.createDiffieHellman(prime[, prime_encoding][, generator][, generator_encoding]) Creates a DiffieHellman key exchange object using the supplied prime and an optional specific generator. The generator argument can be a number, string, or Buffer. If generator is not specified, the value 2 is used. The prime_encoding and generator_encoding arguments can be 'binary', 'hex', or 'base64'. If prime_encoding is specified, prime is expected to be a string; otherwise a Buffer is expected. If ge