Update naming

src/state/queries/usePostThread/traversal.ts

@@ -145,7 +145,7 @@ export function traverse(
           /*
            * Set this value before incrementing the parent's repliesSeenCount
            */
-          metadata!.repliesIndex = parentMetadata.repliesIndexCount
+          metadata!.replyIndex = parentMetadata.repliesIndexCount
           // Increment the parent's repliesIndexCount
           parentMetadata.repliesIndexCount += 1
         }
@@ -211,7 +211,7 @@ export function traverse(
                   /*
                    * Set this value before incrementing the parent's repliesIndexCount
                    */
-                  childMetadata!.repliesIndex =
+                  childMetadata!.replyIndex =
                     childParentMetadata.repliesIndexCount
                   childParentMetadata.repliesIndexCount += 1
                 }
@@ -328,8 +328,7 @@ export function traverse(
            * based on the actual data that we've seen.
            */
           metadata.isLastSibling =
-            metadata.repliesIndex ===
+            metadata.replyIndex === metadata.parentMetadata.repliesSeenCount - 1
-            metadata.parentMetadata.repliesSeenCount - 1
           metadata.isLastChild =
             metadata.nextItemDepth === undefined ||
             metadata.nextItemDepth <= metadata.depth

src/state/queries/usePostThread/types.ts

@@ -161,14 +161,14 @@ export type TraversalMetadata = {
   repliesSeenCount: number
   /**
    * The total number of replies to this post hydrated in this response. Used
-   * for populating the `repliesIndex` of the post by referencing this value on
+   * for populating the `replyIndex` of the post by referencing this value on
    * the parent.
    */
   repliesIndexCount: number
   /**
    * The index-0-based index of this reply in the parent post's replies.
    */
-  repliesIndex: number
+  replyIndex: number
   /**
    * Each slice is responsible for rendering reply lines based on its depth.
    * This value corresponds to any line indices that can be skipped e.g.

src/state/queries/usePostThread/utils.ts

@@ -87,7 +87,7 @@ export function getTraversalMetadata({
     repliesUnhydrated,
     repliesSeenCount: 0,
     repliesIndexCount: 0,
-    repliesIndex: 0,
+    replyIndex: 0,
     skippedIndentIndices: new Set<number>(),
   }