neovim-confs/lua/core/hooks.lua

local hooks, M = {}, {}

local allowed_hooks = {
   ["install_plugins"] = true,
   ["setup_mappings"] = true,
}

M.add = function(name, fn)
   if not allowed_hooks[name] then
      print("Custom lua uses unallowed hook " .. name)
   end
   if not hooks[name] then
      hooks[name] = {}
   end
   table.insert(hooks[name], fn)
end

M.run = function(name, args)
   if hooks[name] then
      for _, hook in pairs(hooks[name]) do
         hook(args)
      end
   end
end

return M