From 3f808cbbb60d99fe27b7e23634375d4c3eacdae1 Mon Sep 17 00:00:00 2001
From: overlookmotel <557937+overlookmotel@users.noreply.github.com>
Date: Tue, 18 Mar 2025 06:40:30 +0000
Subject: [PATCH] perf(semantic): speed up creating redeclarations (#9851)

Small optimization. Use `ArenaVec::from_array_in` instead of creating an empty `ArenaVec` and then immediately pushing to it.
---
 crates/oxc_semantic/src/scoping.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/crates/oxc_semantic/src/scoping.rs b/crates/oxc_semantic/src/scoping.rs
index 2d9ab11b85372..7cf6096f04026 100644
--- a/crates/oxc_semantic/src/scoping.rs
+++ b/crates/oxc_semantic/src/scoping.rs
@@ -276,8 +276,7 @@ impl Scoping {
             });
         } else {
             self.cell.with_dependent_mut(|allocator, cell| {
-                let mut v = ArenaVec::new_in(allocator);
-                v.push(span);
+                let v = ArenaVec::from_array_in([span], allocator);
                 let redeclaration_id = cell.redeclaration_spans.len();
                 cell.redeclaration_spans.push(v);
                 self.symbol_redeclarations[symbol_id] =