Function MustSubFS

apis/base.go:82–91

MustSubFS returns an [fs.FS] corresponding to the subtree rooted at fsys's dir. This is similar to [fs.Sub] but panics on failure.

(fsys fs.FS, dir string)

//
// This is similar to [fs.Sub] but panics on failure.
func MustSubFS(fsys fs.FS, dir string) fs.FS {
	dir = filepath.ToSlash(filepath.Clean(dir)) // ToSlash in case of Windows path

	sub, err := fs.Sub(fsys, dir)
	if err != nil {
		panic(fmt.Errorf("failed to create sub FS: %w", err))
	}

	return sub
}

// Static is a handler function to serve static directory content from fsys.
//