Where to store a file with abbr statements that is sourced from config.fish?

I have fish started from zsh. In my config.fish there is a line

source ~/.config/fish/easy-tor.fish

easy-tor.fish is simply a bunch of abbr statements to quickly turn command-line Tor and SOCKS5 proxy on and off. What is the correct place to store this file? Does fish provide an official advice where to store files that doesn't contain functions?