What's the standard folder structure for zsh?

In order to organize my zsh custom files folder structure, is there a standard directory structure for zsh?

I'm not talking about Oh-My-Zsh or any other framework, but for "vanilla" zsh custom files.

From now, I've seen this type of directory structure:

~/.zsh/
      custom/
            plugins/
            themes/

or

~/.zsh/
      functions/
      themes/
      library/

There is no standard folder structure. Zsh lets you organize your files in almost any way you like.

There are a couple of rules, though:

• By default, Zsh looks for dotfiles in $HOME.
• To keep your Zsh dotfiles elsewhere, create a file ~/.zshenv and, in there, assign $ZDOTDIR to the dir where you want to keep the rest of your dotfiles (and make sure you do not put anything else in .zshenv).
• .zshrc is generally the only Zsh dotfile you need. Most of the others are there for legacy reasons only.
• There is no standard location for the $HISTFILE, but on macOS and Debian, /etc/zshrc sets it to ${ZDOTDIR:-$HOME}/.zsh_history.
• There is no standard location for user functions (including themes and completions). Instead, any dir you add to your $fpath will be searched for functions. Examples in the Zsh documentation put custom functions in ~/myfns or ~/myfuncs.
• Shared functions should go to /usr/local/share/zsh/site-functions. This dir is by default in every user’s $fpath.
• The completion dump file is saved by default to ${ZDOTDIR:-$HOME}/.zcompdump. You can change this by passing -d <dumpfile> when you call compinit (which you should call once and only once).
• Completion cache files are saved by default to ${ZDOTDIR:-$HOME}/.zcompcache/, but you can change this with zstyle ':completion:*' cache-path <dir>.
• Plugins are not a standard part of Zsh (they were made up by Oh-My-Zsh) and thus don't have any standard location or handling at all.