Debug node js visual studio code code#
Debug node js visual studio code download#

In the BREAKPOINTS pane, all the breakpoints that are enabled in your project are available. This is similar to the JavaScript debugger in web browsers. This causes the program to stop executing, and you can inspect the values of any current scope identifier in the VARIABLES pane by hovering on the line of the current breakpoint thatвЂ™s highlighted in yellow.

Debug node js visual studio code code#

When you create a breakpoint in the handler for a route, for instance, you can trigger it by executing that part of the code by making a request to the route using the browser or tools like Postman or curl. You can repeat this for all the lines in your program that are relevant to the problem you're trying to solve. Clicking the red circle on a line causes it to turn bright red, indicating that an active breakpoint is present on that line. As you move your mouse across the numbers, a red circle appears on each line. You are not restricted from doing so on variable declarations, expressions, comments, and blank lines.Д¬reate a breakpoint by clicking the gutter to the left of the line numbers in the editor. You can create breakpoints in Visual Studio Code almost anywhere except function declaration statements. Select the relevant entry to start the debugging session.Д«reakpoints allow you to pause the code execution on a specific line to inspect it. There may be several entries, but it should be easy enough to select the one you are interested in. This opens a menu that lists each individual Node.js process running on your machine. To open the process picker, type Ctrl+Shift+P and find the Debug: Attach to Node Process command: vscode folder at the root of the project.Д¬reate the configuration file by clicking the create a launch.json file link in the RUN AND DEBUG: RUN view.ДЄfter selecting the environment for your project, the launch.json file should appear in the editor with the following contents:Д®nter fullscreen mode Exit fullscreen modeДЄfter executing either of the above commands, you can open a process picker within Visual Studio Code, which lists all the processes that are available to the Node.js debugger. This configuration file is saved as launch.json in the. You also can create a launch configuration file for the project to configure and save debugging setup details that are infinitely reusable by anyone working on the project. On the left-hand side of the editor, there are five panes titled VARIABLES, WATCH, CALL STACK, LOADED SCRIPTS, and BREAKPOINTS. You can see the output of your project in the DEBUG CONSOLE, and the debug toolbar appears at the top of the screen to step through the code, pause the script, or end the session. The Node.js (legacy) option refers to the old JavaScript debugger, which is still available but not recommended.ДЄfter selecting an environment, the project launches and the debugger attaches to the process. The Visual Studio Code debugger will try to auto-detect the debug environment for your project, but if this fails, you will be prompted to select the appropriate environment in this case, select Node.js. The easiest way to start a debugging session in Visual Studio Code is to open a file in the editor, click the Run View icon in the Activity Bar (or press Ctrl+Shift+D on your keyboard), followed by the Run and Debug button at the top left corner of the application. Start a debugging session in Visual Studio Code The instructions to set it up are in the project's README file.

Debug node js visual studio code download#

You also need a Node.js project you can use your own or download this sample URL shortener application. This tutorial uses v16.2.0 and 1.56.2, respectively. Setting up a project for Node.js debugging is not particularly difficult, and this tutorial will help you get it right on the first try!Д«efore beginning, ensure the most recent versions of both Node.js and Visual Studio Code are installed. You can also evaluate expressions in the editor and step through the code to drill into the problematic parts. When beginning a debugging session, you must inspect the call stack and any scoped variables in their current state. Its built-in debugger can debug any application that targets the Node.js runtime, even if the source code for the application is a language that transpiles to JavaScript, such as TypeScript.

The Visual Studio Code editor has all the tools to debug Node.js applications effectively.