feat: add fallback types to content types

android/src/main/java/expo/modules/xmtpreactnativesdk/wrappers/DecodedMessageWrapper.kt

@@ -21,6 +21,7 @@ class DecodedMessageWrapper {
             "content" to ContentJson(model.encodedContent).toJsonMap(),
             "senderAddress" to model.senderAddress,
             "sent" to model.sent.time,
+            "fallback" to model.fallbackContent
         )
     }
 }

example/src/tests.ts

@@ -168,6 +168,10 @@ test("can list batch messages", async () => {
     throw Error("Unexpected message content " + messages[0].content);
   }
 
+  if (messages[0].fallback !== 'Reacted “💖” to an earlier message') {
+    throw Error("Unexpected message fallback " + messages[0].fallback);
+  }
+
   return true;
 });
 
@@ -488,6 +492,10 @@ test("can send read receipts", async () => {
     throw Error("Unexpected message content " + bobMessages[0].content);
   }
 
+  if (bobMessages[0].fallback) {
+    throw Error("Unexpected message fallback " + bobMessages[0].fallback);
+  }
+
   return true;
 });
 

ios/Wrappers/DecodedMessageWrapper.swift

@@ -12,6 +12,7 @@ struct DecodedMessageWrapper {
             "content": ContentJson.fromEncoded(model.encodedContent, client: model.client).toJsonMap() as Any,
             "senderAddress": model.senderAddress,
             "sent": UInt64(model.sent.timeIntervalSince1970 * 1000),
+            "fallback": model.fallbackContent
         ]
     }
 

src/XMTP.types.ts

@@ -96,6 +96,7 @@ export type DecodedMessage = {
   content: MessageContent;
   senderAddress: string;
   sent: number; // timestamp in milliseconds
+  fallback: string | undefined;
 };
 
 export type ConversationContext = {