init code

internal/data/repo.go

@@ -0,0 +1,15 @@
+package data
+
+import "sync"
+
+var (
+	Market IMarket
+	once   sync.Once
+)
+
+func NewRepository(market IMarket) {
+	once.Do(
+		func() {
+			Market = market
+		})
+}