check project code style. add .luacheckrc (#7)

druid/helper/formats.lua

@@ -7,28 +7,31 @@ local ZERO = "0"
 -- @param count - count of numerals
 -- @return string with need count of zero (1,3) -> 001
 function M.add_prefix_zeros(num, count)
-  local result = tostring(num)
-  for i = string.len(result), count - 1 do
-    result = ZERO..result
-  end
-  return result
+	local result = tostring(num)
+	for i = string.len(result), count - 1 do
+		result = ZERO..result
+	end
+	return result
 end
 
+
 -- Convert seconds to string minutes:seconds
 -- @param num - number of seconds
 -- @return string minutes:seconds
 function M.second_string_min(sec)
-  local mins = math.floor(sec / 60)
-  local seconds = math.floor(sec - mins * 60)
-  return string.format("%.2d:%.2d", mins, seconds)
+	local mins = math.floor(sec / 60)
+	local seconds = math.floor(sec - mins * 60)
+	return string.format("%.2d:%.2d", mins, seconds)
 end
 
+
 -- Interpolate string with named Parameters in Table
 -- @param s - string for interpolate
 -- @param tab - table with parameters
 -- @return string with replaced parameters
 function M.interpolate_strinng(s, tab)
-  return (s:gsub('($%b{})', function(w) return tab[w:sub(3, -2)] or w end))
+	return (s:gsub('($%b{})', function(w) return tab[w:sub(3, -2)] or w end))
 end
 
-return M
+
+return M