add a helper function (#443)

pkg/utils/utils.go

@@ -5,8 +5,11 @@ import (
 	"math/big"
 	"os"
 	"regexp"
+	"strconv"
 	"strings"
 
+	"golang.org/x/exp/constraints"
+
 	jsoniter "github.com/json-iterator/go"
 )
 
@@ -104,3 +107,14 @@ func IfOrFn[T any](a bool, x, y func() T) T {
 	}
 	return y()
 }
+
+func Itoa[T constraints.Integer](i T) string {
+	switch any(i).(type) {
+	case int, int8, int16, int32, int64:
+		return strconv.FormatInt(int64(i), 10)
+	case uint, uint8, uint16, uint32, uint64:
+		return strconv.FormatUint(uint64(i), 10)
+	default:
+		return ""
+	}
+}