Get name and line of calling function in node.js

by

Using info from here: Accessing line number in V8 JavaScript (Chrome & Node.js)

you can add some prototypes to provide access to this info from V8:

Object.defineProperty(global, '__stack', {
get: function() {
        var orig = Error.prepareStackTrace;
        Error.prepareStackTrace = function(_, stack) {
            return stack;
        };
        var err = new Error;
        Error.captureStackTrace(err, arguments.callee);
        var stack = err.stack;
        Error.prepareStackTrace = orig;
        return stack;
    }
});

Object.defineProperty(global, '__line', {
get: function() {
        return __stack[1].getLineNumber();
    }
});

Object.defineProperty(global, '__function', {
get: function() {
        return __stack[1].getFunctionName();
    }
});

function foo() {
    console.log(__line);
    console.log(__function);
}

foo()

Returns ’28’ and ‘foo’, respectively.

More Related Contents:

  1. How do I pass command line arguments to a Node.js program?
  2. Is it bad practice to have a constructor function return a Promise?
  3. module.exports vs exports in Node.js
  4. Best way to call an asynchronous function within map?
  5. How to avoid long nesting of asynchronous functions in Node.js
  6. Understanding Asynchronous Code in Layman’s terms
  7. Node.js can’t create Blobs?
  8. How can i export socket.io into other modules in nodejs?
  9. Rest with Express.js nested router
  10. Is there a template engine for Node.js? [closed]
  11. TypeError: firebase.storage is not a function
  12. Module not found: Error: Can’t resolve ‘crypto’
  13. How do I upload a base64 encoded image (string) directly to a Google Cloud Storage bucket using Node.js?
  14. Inserting and Querying Date with MongoDB and Nodejs
  15. Socket.io + PhoneGap
  16. How many concurrent setTimeouts before performance issues?
  17. Eslint does not allow static class properties
  18. Environment detection: node.js or browser
  19. In the `import` syntax of ES6, how is a module evaluated exactly?
  20. setPresence activity type in discord.js v14 can only be set to “PLAYING”
  21. Discord.js – Cooldown for a command for each user not all users
  22. Checking if a message was sent from a DM not working
  23. Upload Base64 Image Facebook Graph API
  24. Discord.js: Invalid bitfield flag or number: GUILDS
  25. create-react-app: How do I “npm start” with a specific browser?
  26. Spawn and kill a process in node.js
  27. Module build failed (from ./node_modules/babel-loader/lib/index.js): Error: Cannot find module ‘babel-preset-react’
  28. How to convert a string to ObjectId in nodejs mongodb native driver?
  29. ECMA6 generators: yield promise
  30. Node.js console.log(object) prints empty object

Leave a Comment