Swagger API documentation is broken in esbuild bundle

[MatsG23]

When I use Fastify in combination with Swagger, the API documentation can not be accessed when running the bundle file by esbuild.

When I run the bundle file, I can see this error in the console:

"root" path "[path to one level above the project folder]/static" must exist

Trying to access the API documentation at http://localhost:3000/documentation then fails with a 404 HTTP error. The documentation thing when I run the unbundled code project.
My guess is that the code in the bundle somehow infers with the @fastify/swagger dynamic documentation generation so that the output path for the Swagger documentation HTML page is incorrect.

You can easily reproduce the issue in this project (further instructions given): https://github.com/MatsG23/esbuild-issue

[evanw]

Here's what the first page of esbuild's documentation says about bundling for node:

You also may not want to bundle your dependencies with esbuild. There are many node-specific features that esbuild doesn't support while bundling such as __dirname, import.meta.url, fs.readFileSync, and *.node native binary modules. You can exclude all of your dependencies from the bundle by setting packages to external:

esbuild app.jsx --bundle --platform=node --packages=external

I'm closing this issue because esbuild is already working as expected. The answer to your question is already in the documentation.

[MatsG23]

Is it planned to add support for these node-specific features in the future?

[evanw]

No, I don’t plan on doing this.