fix

d2compiler/compile.go

@@ -752,38 +752,37 @@ func (c *compiler) validateBoardLinks(g *d2graph.Graph) {
 }
 
 func hasBoard(root *d2graph.Graph, ida []string) bool {
-	for i := 0; i < len(ida); i += 2 {
-		id := ida[i]
-		if i == 0 && id == "root" {
-			i--
-			continue
+	if len(ida) == 0 {
+		return true
 	}
-		if i == len(ida)-1 {
+	if ida[0] == "root" {
+		return hasBoard(root, ida[1:])
+	}
+	id := ida[0]
+	if len(ida) == 1 {
 		return root.Name == id
 	}
-		nextID := ida[i+1]
+	nextID := ida[1]
 	switch id {
 	case "layers":
 		for _, b := range root.Layers {
 			if b.Name == nextID {
-					return hasBoard(b, ida[i+1:])
+				return hasBoard(b, ida[2:])
 			}
 		}
 	case "scenarios":
 		for _, b := range root.Scenarios {
 			if b.Name == nextID {
-					return hasBoard(b, ida[i+1:])
+				return hasBoard(b, ida[2:])
 			}
 		}
 	case "steps":
 		for _, b := range root.Steps {
 			if b.Name == nextID {
-					return hasBoard(b, ida[i+1:])
+				return hasBoard(b, ida[2:])
 			}
 		}
 	}
-		break
-	}
 	return false
 }