diff --git a/src/algorithms/capture.mbt b/src/algorithms/capture.mbt
index fbb7ae6..3aff322 100644
--- a/src/algorithms/capture.mbt
+++ b/src/algorithms/capture.mbt
@@ -21,7 +21,7 @@
 ///
 /// A simple wrapper around Array[DiffOp] that implements the DiffHook interface
 /// This allows it to collect operations from any diff algorithm
-type Capture Array[DiffOp] derive(Default)
+struct Capture(Array[DiffOp]) derive(Default)
 
 /// ================================================================================
 /// CONSTRUCTION METHODS
diff --git a/src/algorithms/moon.pkg.json b/src/algorithms/moon.pkg.json
index 78bccc1..84d8856 100644
--- a/src/algorithms/moon.pkg.json
+++ b/src/algorithms/moon.pkg.json
@@ -1,3 +1,3 @@
 {
-  "warn-list": "-1-2-3-5-6-7-8-10-29"
+  "warn-list": "+a"
 }
diff --git a/src/algorithms/range.mbt b/src/algorithms/range.mbt
index 64a71b8..ff22602 100644
--- a/src/algorithms/range.mbt
+++ b/src/algorithms/range.mbt
@@ -98,26 +98,3 @@ pub fn Range::iter(self : Range) -> Iter[Int] {
 ///
 /// Additional utility methods that could be useful for range manipulation
 /// These are not currently used but demonstrate the mathematical properties
-
-///| Creates the intersection of two ranges
-/// @return Range representing the overlap, or empty range if no overlap
-fn Range::intersect(self : Range, other : Range) -> Range {
-  let start = @cmp.maximum(self.start, other.start)
-  let end = @cmp.minimum(self.end, other.end)
-  Range::new(start, end)
-}
-
-///| Creates the union of two ranges (smallest range containing both)
-/// @return Range spanning both input ranges
-fn Range::union(self : Range, other : Range) -> Range {
-  let start = @cmp.minimum(self.start, other.start)
-  let end = @cmp.maximum(self.end, other.end)
-  Range::new(start, end)
-}
-
-///| Splits the range at a given point
-/// @param at The split point (must be within range)
-/// @return Tuple of (left_range, right_range)
-fn Range::split_at(self : Range, at : Int) -> (Range, Range) {
-  (Range::new(self.start, at), Range::new(at, self.end))
-}
diff --git a/src/moon.pkg.json b/src/moon.pkg.json
index f1bf2e0..3b99388 100644
--- a/src/moon.pkg.json
+++ b/src/moon.pkg.json
@@ -5,5 +5,5 @@
       "alias": "algorithms"
     }
   ],
-  "warn-list": "-1-2-3-5-6-7-8-10-29"
+  "warn-list": "+a"
 }