From 13fa559536549d959d509239b7b9d783b8eeb428 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Wed, 7 Oct 2026 04:04:44 +0000
Subject: [PATCH] perf: optimize registry phrase addition string allocations

Co-authored-by: Horizontal42 <75383519+Horizontal42@users.noreply.github.com>
---
 src/engine/registry.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/engine/registry.ts b/src/engine/registry.ts
index 194cc86..47ee9e4 100644
--- a/src/engine/registry.ts
+++ b/src/engine/registry.ts
@@ -88,7 +88,12 @@ export class Registry {
     const list = this.byFirst.get(key);
     if (list) {
       // first registration of an identical phrase wins (core vocab is added first)
-      if (list.some((e) => e.caseSensitive === caseSensitive && (caseSensitive ? e.lexemes.join(" ") === lexemes.join(" ") : e.lower.join(" ") === entry.lower.join(" ")))) {
+      if (list.some((e) => {
+        if (e.caseSensitive !== caseSensitive || e.lexemes.length !== lexemes.length) return false;
+        const target = caseSensitive ? lexemes : entry.lower;
+        const source = caseSensitive ? e.lexemes : e.lower;
+        return source.every((val, i) => val === target[i]);
+      })) {
         return;
       }
       list.push(entry);