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#Nodejs print code#
Generally it's safe to assume that the two refer to the same module.Ĭreate a js file named main.js with the following code − The difference is that if the main module changes at runtime, require.main might still refer to the original main module in modules that were required before the change occurred. What platform you're running on: 'darwin', 'freebsd', 'linux', 'sunos' or 'win32'Īlternate way to retrieve require.main. What processor architecture you're running on: 'arm', 'ia32', or '圆4'. Getter/setter to set what is displayed in 'ps'. This is the same as the "config.gypi" file that was produced when running the.
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This is the set of node-specific command line options from the executable that started the process.Īn object containing the user environment.Ī number which will be the process exit code, when the process either exits gracefully, or is exited via process.exit() without specifying a code.Ī compiled-in property that exposes NODE_VERSION.Ī property exposing the version strings of node and its dependencies.Īn Object containing the JavaScript representation of the configure options that were used to compile the current node executable. This is the absolute pathname of the executable that started the process. The next elements will be any additional command line arguments. The first element will be 'node', the second element will be the name of the JavaScript file. Sr.No.Īn array containing the command line arguments. Process provides many useful properties to get better control over system interactions. This is a standard Unix practice, since exit codes are defined to be 7-bit integers, and signal exits set the high-order bit, and then contain the value of the signal code.
#Nodejs print plus#
If Node receives a fatal signal such as SIGKILL or SIGHUP, then its exit code will be 128 plus the value of the signal code. The -debug and/or -debug-brk options were set, but an invalid port number was chosen. This is extremely rare, and generally can only happen during the development of Node itself. The JavaScript source code internal in Node's bootstrapping process threw an error when the bootstrapping function was called. There was an uncaught exception, and the internal fatal exception handler function itself threw an error while attempting to handle it.Įither an unknown option was specified, or an option requiring a value was provided without a value. Internal Exception Handler Run-Time Failure There was an uncaught exception, but the internal fatal exception handler function was somehow set to a non-function, and could not be called. Typically, a message will be printed to stderr with the prefix FATAL ERROR. There was a fatal unrecoverable error in V8. The JavaScript source code internal in Node's bootstrapping process failed to return a function value when evaluated. The JavaScript source code internal in Node's bootstrapping process caused a parse error. There was an uncaught exception, and it was not handled by a domain or an uncaughtException event handler. There are other exit codes which are described below − Code Node normally exits with a 0 status code when no more async operations are pending. If a listener is added for this exception, the default action (which is to print a stack trace and exit) will not occur.Įmitted when the processes receives a signal such as SIGINT, SIGHUP, etc.Ĭreate a js file named main.js with the following code for listening for exit event −Ĭonsole.log('About to exit with code:', code) Normally, the node exits when there is no work scheduled, but a listener for 'beforeExit' can make asynchronous calls, and cause the node to continue.Įmitted when an exception bubbles all the way back to the event loop. This event is emitted when node empties its event loop and has nothing else to schedule. There is no way to prevent the exiting of the event loop at this point, and once all exit listeners have finished running, the process will exit.
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The process object is an instance of EventEmitter and emits the following events − Sr.No.Įmitted when the process is about to exit.
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There are several methods available in a process object. The process object is a global object and can be accessed from anywhere.