perf(addon-search): avoid repeated substring allocation in reverse regex

Hoist searchStringLine.slice(0, offset) outside the reverse regex exec loop. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-25 17:40:31 -07:00
parent c7baa96f97
commit 9902f54c93
1 changed files with 2 additions and 1 deletions
@@ -288,7 +288,8 @@ export class SearchEngine {
      let foundTerm: RegExpExecArray | null;
      if (isReverseSearch) {
        // This loop will get the resultIndex of the _last_ regex match in the range 0..offset
-        while (foundTerm = searchRegex.exec(searchStringLine.slice(0, offset))) {
+        const searchSubstring = searchStringLine.slice(0, offset);
+        while (foundTerm = searchRegex.exec(searchSubstring)) {
          if (foundTerm[0].length === 0) {
            continue;
          }