From c4b6d118bb70cd63bd5e6b056a4a4bd024af8e36 Mon Sep 17 00:00:00 2001
From: Florent Tapponnier <contact@mobula.io>
Date: Fri, 26 Jun 2026 17:32:53 +0200
Subject: [PATCH] fix(seo): filter unresolvable compare pairs out of search
 index
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PR #749 stopped /compare from rendering pairs where either provider
is unresolved (e.g. jupiter-vs-raydium), but the search index built
in buildSearchIndex iterated COMPARE_PAIRS directly. Ahrefs crawls
the embedded JSON and flagged /compare → /compare/jupiter-vs-raydium
as a dead internal link.

Same getProvider() probe as /compare/page.tsx, so the two surfaces
stay in lockstep.
---
 src/lib/search/buildIndex.ts | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/lib/search/buildIndex.ts b/src/lib/search/buildIndex.ts
index fcd00793..fd5b03a3 100644
--- a/src/lib/search/buildIndex.ts
+++ b/src/lib/search/buildIndex.ts
@@ -17,7 +17,7 @@ import { loadAllAnswers } from "@/lib/answers";
 import { CHAINS } from "@/lib/chains";
 import { COMPARE_PAIRS } from "@/data/compare-pairs";
 import { PROVIDER_REGISTRY } from "@/data/provider-registry";
-import { canonicalize } from "@/lib/providers";
+import { canonicalize, getProvider } from "@/lib/providers";
 import type { SearchItem } from "@/lib/search/types";
 
 /**
@@ -221,7 +221,23 @@ export const buildSearchIndex = cache(async function buildSearchIndex(): Promise
   }
 
   // ── Compare pairs ───────────────────────────────────────────────
-  for (const pair of COMPARE_PAIRS) {
+  // Mirror the filter applied by /compare/page.tsx: skip pairs where
+  // either side is unresolved (provider deregistered, never imported,
+  // or hex-blacklisted). Without this the search index keeps surfacing
+  // jupiter-vs-raydium et al even after the compare page itself stops
+  // rendering them, and Google / Ahrefs flag the embedded JSON as a
+  // dead internal link.
+  const resolvedPairs = await Promise.all(
+    COMPARE_PAIRS.map(async (pair) => {
+      const [a, b] = await Promise.all([
+        getProvider(pair.providerA),
+        getProvider(pair.providerB),
+      ]);
+      return a && b ? pair : null;
+    }),
+  );
+  for (const pair of resolvedPairs) {
+    if (!pair) continue;
     const a = providerNameFor(pair.providerA);
     const b = providerNameFor(pair.providerB);
     items.push({