1 files changed, 19 insertions, 0 deletions
diff --git a/src/mbgl/style/expression/array_assertion.cpp b/src/mbgl/style/expression/array_assertion.cpp
index 29f6a47b10..4049301b0b 100644
--- a/src/mbgl/style/expression/array_assertion.cpp
+++ b/src/mbgl/style/expression/array_assertion.cpp
@@ -81,6 +81,25 @@ ParseResult ArrayAssertion::parse(const Convertible& value, ParsingContext& ctx)
     ));
 }
 
+mbgl::Value ArrayAssertion::serialize() const {
+    std::vector<mbgl::Value> serialized;
+    serialized.emplace_back(getOperator());
+    
+    
+    const auto array = getType().get<type::Array>();
+    if (array.itemType.is<type::StringType>()
+     || array.itemType.is<type::NumberType>()
+     || array.itemType.is<type::BooleanType>()) {
+        serialized.emplace_back(type::toString(array.itemType));
+        if (array.N) {
+            serialized.emplace_back(uint64_t(*array.N));
+        }
+    }
+    
+    serialized.emplace_back(input->serialize());
+    return serialized;
+}
+
 } // namespace expression
 } // namespace style
 } // namespace mbgl