1 files changed, 18 insertions, 0 deletions
diff --git a/lib/gitlab/relative_positioning/ending_at.rb b/lib/gitlab/relative_positioning/ending_at.rb
new file mode 100644
index 00000000000..61060638ee6
--- /dev/null
+++ b/lib/gitlab/relative_positioning/ending_at.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module RelativePositioning
+    class EndingAt < RelativePositioning::Range
+      include Gitlab::Utils::StrongMemoize
+
+      def initialize(rhs)
+        @rhs = rhs
+        raise IllegalRange, 'rhs is required' unless rhs
+      end
+
+      def lhs
+        strong_memoize(:lhs) { rhs.lhs_neighbour }
+      end
+    end
+  end
+end