punycode.ucs2.decode(string) Creates an array containing the numeric code point values of each Unicode symbol in the string. While JavaScript uses UCS-2 internally, this function will convert a pair of surrogate halves (each of which UCS-2 exposes as separate characters) into a single code point, matching UTF-16. punycode.ucs2.decode('abc'); // [0x61, 0x62, 0x63] // surrogate pair for U+1D306 tetragram for centre: punycode.ucs2.decode('\uD834\uDF06'); // [0x1D306]

punycode.encode(string) Converts a string of Unicode symbols to a Punycode string of ASCII-only symbols. // encode domain name parts punycode.encode('mañana'); // 'maana-pta' punycode.encode('☃-⌘'); // '--dqo34k'

punycode.toASCII(domain) Converts a Unicode string representing a domain name to Punycode. Only the non-ASCII parts of the domain name will be converted, i.e. it doesn't matter if you call it with a domain that's already in ASCII. // encode domain names punycode.toASCII('mañana.com'); // 'xn--maana-pta.com' punycode.toASCII('☃-⌘.com'); // 'xn----dqo34k.com'

punycode.ucs2

process.version A compiled-in property that exposes NODE_VERSION. console.log(`Version: ${process.version}`);

process.uptime() Number of seconds Node.js has been running.

process.versions A property exposing version strings of Node.js and its dependencies. console.log(process.versions); Will print something like: { http_parser: '2.3.0', node: '1.1.1', v8: '4.1.0.14', uv: '1.3.0', zlib: '1.2.8', ares: '1.10.0-DEV', modules: '43', icu: '55.1', openssl: '1.0.1k' }

process.umask([mask]) Sets or reads the process's file mode creation mask. Child processes inherit the mask from the parent process. Returns the old mask if mask argument is given, otherwise returns the current mask. const newmask = 0o022; const oldmask = process.umask(newmask); console.log( `Changed umask from ${oldmask.toString(8)} to ${newmask.toString(8)}` );

process.title Getter/setter to set what is displayed in ps. When used as a setter, the maximum length is platform-specific and probably short. On Linux and OS X, it's limited to the size of the binary name plus the length of the command line arguments because it overwrites the argv memory. v0.8 allowed for longer process title strings by also overwriting the environ memory but that was potentially insecure/confusing in some (rather obscure) cases.

process.setuid(id) Note: this function is only available on POSIX platforms (i.e. not Windows, Android) Sets the user identity of the process. (See setuid(2).) This accepts either a numerical ID or a username string. If a username is specified, this method blocks while resolving it to a numerical ID. if (process.getuid && process.setuid) { console.log(`Current uid: ${process.getuid()}`); try { process.setuid(501); console.log(`New uid: ${process.getuid()}`); } catch (e