#NODEJS INSPECTOR HOW TO#
So how to debug remote machine with your local Node Inspector? option 1 In this way, you must launch Node Inspector with -no-inject which means some features are not supported such as profiling and consoling output inspection. Node Inspector must be running on the same machine, but your browser can be anywhere.Īnd if Node Inspector is not running on your remote machine, you can also debug it as long as your local machine can connect it. When in doubt, refresh the page in browser Can I debug remotely? Note: node-debug adds this option for you by default. The debugged process must be started with -debug-brk, this way the script is paused on the first line. Troubleshooting My script runs too fast to attach the debugger. Read the following blog post for instructions:ĭebugging Clustered Apps with Node-Inspector Break on uncaught exceptions does not work in all Node versions,.While not stopped at a breakpoint the console doesn't always.Be careful about viewing the contents of Buffer objects,Įach byte is displayed as an individual array element įor most Buffers this will take too long to render.Embeddable in other applications - see Embedding HOWTO.Set breakpoints in files that are not loaded into V8 yet - useful for.Optionally persisting changes back to the file-system. Remote debugging and debugging remote machine.Node Inspector uses WebSockets, so no polling for breaks.Hover your mouse over an expression in your source to display its value in.Inspect scopes, variables, object properties.Step over, step in, step out, resume (continue).Set breakpoints (and specify trigger conditions).Node Inspector supports almost all of the debugging features of DevTools, including: The Blink DevTools debugger is a powerful JavaScript debugger interface. How to Debug Node Apps with Node Inspector Documentation specific to Node Inspector provided by StrongLoop:.Node Inspector works almost exactly as the Chrome Developer Tools. The inspector page in one of those browsers if another browser NOTE: Node Inspector works in Chrome and Opera only. The node-debug command will load Node Inspector in your default browser. See available configuration options here Debug Press Ctrl+C to leave the debug repl.Where app.js is the name of your main Node application JavaScript file. This allows you to examine the contents of variables and test out lines of code. The repl mode has the same context as the line you are debugging. Use watch(expression) command to add the variable or expression whose value you want to watch and restart to restart the app and debugging. To exit from the debugger interface, type process.exit() Once the above commands runs you will see the following output.
#NODEJS INSPECTOR CODE#
To Debug the above code run the following command node debug debugDemo.js SetBreakpoint(line), sb(line) - Set breakpoint on specific line SetBreakpoint(), sb() - Set breakpoint on current line The keyword debugger will stop the debugger at that point in the code. function returns the sum of the two numbers To start the build in the debugger, start the application with this command: node debug filename.jsĬonsider the following simple Node.js application contained in the debugDemo.js 'use strict' Node.js provides a build in non graphical debugging utility. Using IISNode to host Node.js Web Apps in IIS.Using Browserfiy to resolve 'required' error with browsers.Synchronous vs Asynchronous programming in nodejs.Route-Controller-Service structure for ExpressJS.Node.js v6 New Features and Improvement.Node.js code for STDIN and STDOUT without using any library.Node.js (express.js) with angular.js Sample code.MongoDB Integration for Node.js/Express.js.Keep a node application constantly running.Exporting and Importing Module in node.js.Executing files or commands with Child Processes.Deploying Node.js applications in production.Deploying Node.js application without downtime.Core node.js debugger and node inspector.Creating a Node.js Library that Supports Both Promises and Error-First Callbacks.
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