You can also bring up the snippets with the Add Configuration... button in the lower right of the launch.json editor window. Install that extension. The Node.js debugger of VS Code supports JavaScript source maps that help debugging of transpiled languages, for example, TypeScript or minified/uglified JavaScript. Click it and set it to on. By default, it contains the following content: You can add more configurations via the floating “Add configuration” button. After Node.js has parsed all the code (for example, by running through it), breakpoints can be easily reapplied to the requested locations with the Reapply button in the BREAKPOINTS section header. Nodemon is a tool that auto-reloads the server and reattaches the debugger after you make changes to your app. The source map feature is controlled by the sourceMaps attribute that defaults to true. If you set a breakpoint in a skipped file, you will stop at that breakpoint, and you will be able to step through it until you step out of it, at which point normal skipping behavior will resume. New debugging. this is Super cool and super productive. If the debug session is in "launch" mode, pressing Stop does the following: When pressing Stop for the first time, the debuggee is requested to shut down gracefully by sending a SIGINT signal. If you want VS Code to open the editable source from your workspace instead, you can set up a mapping between the remote and local locations. In reviewing the VSCode node debugging info, I ran across “Attach to Remote”. By default, VS Code will search your entire workspace, excluding node_modules, for sourcemaps. There are three modes for auto attach, which you can select in the resulting Quick Pick and via the debug.javascript.autoAttachFilter setting: After enabling Auto Attach, you'll need to restart your terminal. If there are no breakpoints (or problems) in that shutdown code, the debuggee and the debug session will terminate. But, there is not a straightforward way to figure this out starting from the .ts file. Before proceeding, make sure you have the VS Code editor installed on your computer. Node.js debugging in VS Code. Note: If you are just getting started with VS Code, you can learn about general debugging features and creating launch.json configuration files in the Debugging topic. For example, this might log something like location is /usr/local: The 'hit count condition' controls how many times a breakpoint needs to be hit before it will 'break' execution. The debugger prints all console.log instances in your code to the debug console. Open the debug panel by clicking the bug icon on the activity bar. Live edit and debug your React apps directly from VS Code. For example, to exclude mocha and include my-cool-test-runner, you could add two lines: In a similar way to auto attach, the JavaScript Debug Terminal will automatically debug any Node.js process you run in it. Enter the Pain of Debugging in Node.js. We recommend setting the property devtool: "source-map" in your webpack.config.js for the best fidelity of results, although you can experiment with other settings causes slowdowns in your build. (SIGUSR1is not available on Windows.) Here are some things to try when your breakpoints turn gray: The Node.js debugger supports remote debugging where you attach to a process running on a different machine, or in a container. This option only persists for the current debugging session. skipFiles is an array of glob patterns for script paths to skip. For the reverse conversion, the localRoot path is replaced by the remoteRoot. Relative paths are resolved relative to the source map. Instead of launching the Node.js program directly with node, you can use 'npm' scripts or other task runner tools directly from a launch configuration: Let's look at an 'npm' example. There also appears a floating button with play/pause, restart, and stop at the top center in VS Code. 'Uninteresting code' is code that is generated by a transpiling process but is not covered by a source map so it does not map back to the original source. In this article, we will be looking at how you can use VS Code to debug a Node.js application. Add a nodejs folder to the Root Source Code Folder; Initialize NPM in the nodejs folder; Configure VSCode to run; Add jest for unit testing; Configure VSCode to Debug Jest Tests; Create a custom JS code for use; Create a AWS Lambda function to use the custom JS; Folder Structure. Vscode has been used for some time. Super-charged live editing and JavaScript debugging for Angular using VS Code. 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