refactor(_utils): change way how it organizes

lua/gopher/_utils/init.lua

@@ -1,48 +1,39 @@
----@diagnostic disable: param-type-mismatch
-return {
-  ---@param t table
-  ---@return boolean
-  empty = function(t)
+local utils = {}
+
+---@param t table
+---@return boolean
+function utils.is_tbl_empty(t)
   if t == nil then
     return true
   end
-
   return next(t) == nil
-  end,
+end
 
-  ---@param s string
-  ---@return string
-  rtrim = function(s)
+---@param s string
+---@return string
+function utils.rtrim(s)
   local n = #s
   while n > 0 and s:find("^%s", n) do
     n = n - 1
   end
 
   return s:sub(1, n)
-  end,
-
-  ---@param msg string
-  ---@param lvl string|integer
-  notify = function(msg, lvl)
-    local l
-    if lvl == "error" or lvl == 4 then
-      l = vim.log.levels.ERROR
-    elseif lvl == "info" or lvl == 2 then
-      l = vim.log.levels.INFO
-    elseif lvl == "debug" or lvl == 1 then
-      l = vim.log.levels.DEBUG
-    end
+end
 
+---@param msg string
+---@param lvl any
+function utils.deferred_notify(msg, lvl)
   vim.defer_fn(function()
-      vim.notify(msg, l)
+    vim.notify(msg, lvl)
   end, 0)
-  end,
+end
 
-  ---safe require
-  ---@param name string module name
-  sreq = function(name)
-    local ok, m = pcall(require, name)
-    assert(ok, string.format("gopher.nvim dependency error: %s not installed", name))
+-- safe require
+---@param  module string module name
+function utils.sreq(module)
+  local ok, m = pcall(require, module)
+  assert(ok, string.format("gopher.nvim dependency error: %s not installed", module))
   return m
-  end,
-}
+end
+
+return utils