fix build on mac

Author: cwaldren-ld

libs/client-sdk/include/launchdarkly/client_side/data_source_update_sink.hpp

@@ -1,7 +1,9 @@
 #pragma once
 
-#include <map>
+#include <optional>
+#include <ostream>
 #include <string>
+#include <unordered_map>
 
 #include "config/detail/service_endpoints.hpp"
 #include "context.hpp"

libs/client-sdk/include/launchdarkly/client_side/flag_manager/detail/flag_manager.hpp

@@ -1,15 +1,17 @@
 #pragma once
 
 #include <mutex>
+#include <string>
+#include <unordered_map>
 
 #include "launchdarkly/client_side/data_source_update_sink.hpp"
 
 namespace launchdarkly::client_side::flag_manager::detail {
 
 class FlagManager {
    public:
-    void Init(const std::unordered_map<std::string, ItemDescriptor>& data);
-    void Upsert(const std::string& key, ItemDescriptor item);
+    void Init(std::unordered_map<std::string, ItemDescriptor> const& data);
+    void Upsert(std::string const& key, ItemDescriptor item);
 
     /**
      * Attempts to get a flag by key from the current flags.
@@ -18,7 +20,7 @@ class FlagManager {
      * @return A shared_ptr to the value if present. A null shared_ptr if the
      * item is not present.
      */
-    std::shared_ptr<ItemDescriptor> Get(const std::string& flag_key) const;
+    std::shared_ptr<ItemDescriptor> Get(std::string const& flag_key) const;
 
     /**
      * Gets all the current flags.

libs/client-sdk/src/data_sources/streaming_data_handler.cpp

@@ -5,6 +5,7 @@
 #include "serialization/value_mapping.hpp"
 
 #include <boost/json.hpp>
+#include <unordered_map>
 #include <utility>
 
 #include "tl/expected.hpp"

libs/client-sdk/tests/streaming_data_handler_test.cpp

@@ -5,6 +5,7 @@
 #include "launchdarkly/client_side/data_sources/detail/streaming_data_handler.hpp"
 
 #include <memory>
+#include <unordered_map>
 
 using namespace launchdarkly;
 using namespace launchdarkly::client_side;