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Continues #39778 Closes #40499 ## Bug - [ ] Related issues linked using `fixes #number` - [ ] Integration tests added - [ ] Errors have helpful link attached, see `contributing.md` ## Feature - [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR. - [ ] Related issues linked using `fixes #number` - [ ] Integration tests added - [ ] Documentation added - [ ] Telemetry added. In case of a feature if it's used or not. - [ ] Errors have helpful link attached, see `contributing.md` ## Documentation / Examples - [ ] Make sure the linting passes by running `pnpm lint` - [ ] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples) Co-authored-by: Tim Neutkens <[email protected]> Co-authored-by: JJ Kasper <[email protected]>
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Using the VS Code Debugger
Debug configurations
The Next.js monorepo provides configurations in the .vscode/launch.json file to help you debug Next.js from VS Code.
The common configurations are:
- Launch app development: Run
next devwith an attached debugger - Launch app build: Run
next buildwith an attached debugger - Launch app production: Run
next startwith an attached debugger
Run a specific app
Any Next.js app inside the monorepo can be debugged with these configurations. For example to run "Launch app development" against examples/hello-world:
- Open the
.vscode/launch.jsonfile. - Find the configuration "Launch app development".
- Edit the
runtimeArgsarray's last item to be"examples/hello-world". - Save the file.
- Now you can start the debugger and it will run against the
examples/hello-worldapp!
To see the changes you make to the Next.js codebase during development, you can run pnpm dev in the root directory, which will watch for file changes in packages/next and recompile the Next.js source code on any file saves.
Breakpoints
When developing/debugging Next.js, you can set breakpoints anywhere in the packages/next source code that will stop the debugger at certain locations so you can examine the behavior. Read more about breakpoints in the VS Code documentation.