Can esbuild support go:embed?

[par5er]

I'm trying to compile javascript on the fly (to serve request-specific JS) and I compile/minify code on every request (it's cached, don't worry!).
A good amount of time is spent reading files from disk so I want to use //go:embed to embed the code directly into my binary, to avoid costly I/O. Could esbuild support virtual file systems? Something like:

//go:embed web/*
var myFs embed.FS

api.Build(api.BuildOptions{
  WorkingDir: myFs, // WorkingDir would accept a "io/fs".FS (defaulting to os.DirFs(<working directory>))

  // Other options would stay the same
  EntryPoints: []string{"./src/index.tsx"},
  Bundle: true,
  Write: false,
  ...
})

This would also simplify deployments, as you can just package a single binary instead of carrying JS code around separately.

To be honest, I really can't think of a use-case outside my own. But I bet there are other places this can be useful. I can raise a PR if this is approved.

PS: Thanks for the library. You rock!

[evanw]

I'm closing this issue as a duplicate of #690. I'm not going to add a Go-only interface such as io/fs.FS. If a file system interface is added to the API, it will be added with JS in mind and then an equivalent API will be exposed to Go.