fix: removed init(); modified lua function impls based on review

internal/server/scripts.go

@@ -27,7 +27,7 @@ const (
 )
 
 // For Lua os.clock() impl
-var startedAt time.Time
+var startedAt time.Time = time.Now()
 
 var errShaNotFound = errors.New("sha not found")
 var errCmdNotSupported = errors.New("command not supported in scripts")
@@ -45,10 +45,6 @@ type lStatePool struct {
 	total int
 }
 
-func init() {
-	startedAt = time.Now()
-}
-
 // newPool returns a new pool of lua states
 func (s *Server) newPool() *lStatePool {
 	pl := &lStatePool{
@@ -913,7 +909,7 @@ func baseToNumber(L *lua.LState) int {
 		L.Push(lv)
 	case lua.LString:
 		str := strings.Trim(string(lv), " \n\t")
-		if strings.Index(str, ".") > -1 {
+		if strings.Contains(str, ".") {
 			if v, err := strconv.ParseFloat(str, lua.LNumberBit); err != nil {
 				L.Push(lua.LNil)
 			} else {
@@ -944,7 +940,7 @@ func baseToString(L *lua.LState) int {
 
 // Lua os.clock()
 func osClock(L *lua.LState) int {
-	L.Push(lua.LNumber(float64(time.Now().Sub(startedAt)) / float64(time.Second)))
+	L.Push(lua.LNumber(time.Since(startedAt).Seconds()))
 	return 1
 }