Bug or feature: should - be allowed in a type name?

[ImpleLee]

Normally - is not allowed in a lua identifier, but it is allowed in a type name in EmmyLua syntax recognized by this language server (although it doesn't seem to be supported by the official EmmyLua plugin).

I use - as a separator in auto-generated names (to not happen to generate the same name as another officially defined type, and also to notice the user it is auto-generated), but I wonder whether it is a bug or a feature.
Example:

---Gets information about the specified file or directory.
---@param path string @ The file or directory path to check.
---@param filtertype? FileType @ (default to nil) If supplied, this parameter causes getInfo to only return the info table if the item at the given path matches the specified file type.
---@return filesystem-getInfo-1 info @ A table containing information about the specified path, or nil if nothing exists at the path. The table contains the following fields:
function filesystem.getInfo(path, filtertype) end

---@class filesystem-getInfo-1
---@field size number # The size in bytes of the file, or nil if it can't be determined.
---@field type FileType # The type of the object at the path (file, directory, symlink, etc.)
---@field modtime number # The file's last modification time in seconds since the unix epoch, or nil if it can't be determined.

So maybe there could be some official answer about whether it is intended or not? (or maybe we could make it a feature?)

[sumneko]

Has supported, thanks