How Can I View My Go Package Documentation Locally in a Browser Using `godoc`?

Viewing Package Documentation Locally in a Browser

When developing packages, it can be helpful to preview their documentation locally before publishing them. While the godoc command can generate text documentation, it also offers an HTTP server mode for displaying documentation in a browser. However, you may encounter difficulties in getting it to work properly.

If you're experiencing the issue where godoc -http=:6060 does not display your own package's documentation but instead shows the Go homepage, ensure that the package is located in the correct path. By default, godoc searches for packages in the GOPATH or module source tree. If your package is outside of these directories, it will not be found.

In GOPATH Mode:

When working in GOPATH mode, godoc -http will serve documentation for all available packages, including the standard library. To view your package's documentation, simply navigate to http://localhost:6060/pkg/your/package.

In Module-Aware Mode:

In module-aware mode, godoc is not compatible with the GOPATH. Therefore, to view documentation for your modules locally, you'll need to place their source code in an src folder. For example, if your module is located in the directory /home/user/mymodule, create a new directory called src within it and move the module's source files there.

Once the source files are in the src folder, start godoc using the following command:

godoc -goroot=/home/user/mymodule -http=:6060

This should allow you to view your package's documentation at http://localhost:6060/pkg/mymodule.

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