Here are some ways to debug in Node.js:

1. Use the built-in debugger.
   The Node.js built-in debugger is a simple but effective tool for debugging your code. To use it, simply add the debugger keyword to the line of code where you want to start debugging. When you run your code, the debugger will pause at that line and you can use the node debugger commands to step through your code, inspect variables, and set breakpoints.

2. Use the Chrome DevTools debugger.
   The Chrome DevTools debugger is a more powerful debugger that can be used to debug Node.js code running in Chrome. To use it, start your Node.js code with the --inspect flag. Then, open Chrome and go to chrome://inspect/. You should see a list of Node.js processes that are running. Click on the process that you want to debug and the Chrome DevTools debugger will open.

3. Use a third-party debugger.
   There are a number of third-party debuggers that can be used to debug Node.js code. Some popular options include Visual Studio Code, WebStorm, and IntelliJ IDEA. These debuggers offer a variety of features that can make debugging your code easier, such as breakpoints, step-through debugging, and variable inspection.

Here are some additional tips for debugging Node.js code:

Use console.log() statements to print out the values of variables.
This can be helpful for tracking down the source of a bug.
Use breakpoints to pause your code at specific points.
This can be helpful for inspecting the values of variables or stepping through your code line by line.
Use a debugger to step through your code line by line.
This can be helpful for understanding how your code is executing and finding the source of a bug.
Use a debugger to inspect the values of variables.
This can be helpful for understanding the state of your code and finding the source of a bug.