Access Logs From Console.log() In Node.js Vm Module
Answer : You can just wrap console.log directly: function hook_consolelog(callback) { var old_log = console.log; console.log = (function(write) { return function() { write.apply(console, arguments) callback.apply(null, arguments); } })(console.log) return function() { console.log = old_log; } } var result; var unhook = hook_consolelog(function(v) { result = v; }); console.log('hello'); unhook(); console.log('goodbye'); console.log('the result is ', result); Since console.log simply calls process.stdout , another approach would be to capture the stdout events using a bit of wrapper magic like this: var util = require('util') function hook_stdout(callback) { var old_write = process.stdout.write process.stdout.write = (function(write) { return function(string, encoding, fd) { write.apply(process.stdout, arguments) callback(string,...