fix: known issue

react-native/src/api/bedrock-api.ts

@@ -397,7 +397,7 @@ function parseChunk(rawChunk: string) {
   if (rawChunk.length > 0) {
     try {
       const bedrockChunk: BedrockChunk = JSON.parse(rawChunk);
-      return extractChunkContent(bedrockChunk);
+      return extractChunkContent(bedrockChunk, rawChunk);
     } catch (error) {
       if (rawChunk.indexOf('}{') > 0) {
         const jsonParts = rawChunk.split('}{');
@@ -410,7 +410,7 @@ function parseChunk(rawChunk: string) {
             (i >= 1 ? '{' : '') + part + (i < jsonParts.length - 1 ? '}' : '');
           try {
             const chunk: BedrockChunk = JSON.parse(part);
-            const content = extractChunkContent(chunk);
+            const content = extractChunkContent(chunk, rawChunk);
             if (content.reasoning) {
               combinedReasoning += content.reasoning;
             }
@@ -446,11 +446,14 @@ function parseChunk(rawChunk: string) {
 /**
  * Helper function to extract content from a BedrockChunk
  */
-function extractChunkContent(bedrockChunk: BedrockChunk) {
+function extractChunkContent(bedrockChunk: BedrockChunk, rawChunk: string) {
   const reasoning =
     bedrockChunk?.contentBlockDelta?.delta?.reasoningContent?.text;
-  const text = bedrockChunk?.contentBlockDelta?.delta?.text;
+  let text = bedrockChunk?.contentBlockDelta?.delta?.text;
   const usage = bedrockChunk?.metadata?.usage;
+  if (bedrockChunk?.detail) {
+    text = rawChunk;
+  }
   return { reasoning, text, usage };
 }
 

react-native/src/chat/component/markdown/useMarkdown.ts

@@ -46,10 +46,12 @@ const useMarkdown = (
   // Use useRef to store cache to prevent loss during re-renders
   const cacheRef = useRef<{
     lastValue: string;
+    lastNewContent: string;
     cachedTokens: ReturnType<typeof marked.lexer>;
     cachedElements: ReactNode[];
   }>({
     lastValue: '',
+    lastNewContent: '',
     cachedTokens: marked.lexer(''),
     cachedElements: [],
   });
@@ -81,6 +83,7 @@ const useMarkdown = (
       if (options?.chatStatus === ChatStatus.Running && value !== '...') {
         cacheRef.current = {
           lastValue: value,
+          lastNewContent: value,
           cachedTokens: tokens,
           cachedElements: elements,
         };
@@ -99,7 +102,17 @@ const useMarkdown = (
     const lastToken = cacheRef.current.cachedTokens[lastTokenIndex];
 
     // Combine the text of the last token with new text to get the latest content to parse
-    let combinedText = lastToken.raw + newContent;
+    let combinedText = lastToken.raw;
+    if (lastToken.type === 'list') {
+      const lastNewContent = cacheRef.current.lastNewContent;
+      if (
+        combinedText[combinedText.length - 1] === '\n' &&
+        lastNewContent[lastNewContent.length - 1] === ' '
+      ) {
+        combinedText = combinedText.slice(0, -1) + ' ';
+      }
+    }
+    combinedText += newContent;
     if (lastToken.type === 'space') {
       combinedText =
         cacheRef.current.cachedTokens[lastTokenIndex - 1].raw + combinedText;
@@ -132,6 +145,7 @@ const useMarkdown = (
     // Update cache with new references
     cacheRef.current = {
       lastValue: value,
+      lastNewContent: newContent,
       cachedTokens: mergedTokens,
       cachedElements: mergedElements,
     };

react-native/src/types/Chat.ts

@@ -116,6 +116,7 @@ export interface BedrockChunk {
   metadata: {
     usage: Usage;
   };
+  detail: string;
 }
 
 export interface Delta {