1 files changed, 13 insertions, 0 deletions

diff --git a/cli/internal/util/modulo.go b/cli/internal/util/modulo.go
new file mode 100644
index 0000000..ec2957a
--- /dev/null
+++ b/cli/internal/util/modulo.go
@@ -0,0 +1,13 @@
+package util
+
+// PostitiveMod returns a modulo operator like JavaScripts
+func PositiveMod(x, d int) int {
+	x = x % d
+	if x >= 0 {
+		return x
+	}
+	if d < 0 {
+		return x - d
+	}
+	return x + d
+}