Add uint32_t as accepted data type for bridging communication

Summary:
Add `uint32_t` as a valid type for communication between C++ and JS via bridging.

Changelog: [Internal]

Reviewed By: christophpurrer

Differential Revision: D42008412

fbshipit-source-id: 2c038e37745782b677d28bcbe4cc030683b74286

Author: rshest

ReactCommon/react/bridging/Number.h

@@ -44,4 +44,15 @@ struct Bridging<int32_t> {
   }
 };
 
+template <>
+struct Bridging<uint32_t> {
+  static uint32_t fromJs(jsi::Runtime &, const jsi::Value &value) {
+    return (uint32_t)value.asNumber();
+  }
+
+  static jsi::Value toJs(jsi::Runtime &, uint32_t value) {
+    return (double)value;
+  }
+};
+
 } // namespace facebook::react

ReactCommon/react/bridging/tests/BridgingTest.cpp

@@ -60,6 +60,21 @@ TEST_F(BridgingTest, numberTest) {
   EXPECT_FLOAT_EQ(
       1.2f, static_cast<float>(bridging::toJs(rt, 1.2f).asNumber()));
   EXPECT_DOUBLE_EQ(1.2, bridging::toJs(rt, 1.2).asNumber());
+
+  EXPECT_EQ(
+      42,
+      static_cast<uint32_t>(
+          bridging::toJs(rt, static_cast<uint32_t>(42)).asNumber()));
+
+  EXPECT_EQ(
+      -42,
+      static_cast<uint32_t>(
+          bridging::toJs(rt, static_cast<uint32_t>(-42)).asNumber()));
+
+  EXPECT_FALSE(
+      -42 ==
+      static_cast<int32_t>(
+          bridging::toJs(rt, static_cast<uint32_t>(-42)).asNumber()));
 }
 
 TEST_F(BridgingTest, stringTest) {