From be939b9d4513feb07359657b7eab70ec8a1b30a2 Mon Sep 17 00:00:00 2001
From: Tuyen Nguyen <vutuyen2636@gmail.com>
Date: Tue, 15 Aug 2023 08:50:34 +0700
Subject: [PATCH] chore: fastest way to create deltas array

---
 packages/fork-choice/src/protoArray/computeDeltas.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/fork-choice/src/protoArray/computeDeltas.ts b/packages/fork-choice/src/protoArray/computeDeltas.ts
index 09f2cf05f1f5..8301c1e77a75 100644
--- a/packages/fork-choice/src/protoArray/computeDeltas.ts
+++ b/packages/fork-choice/src/protoArray/computeDeltas.ts
@@ -19,7 +19,11 @@ export function computeDeltas(
   newBalances: EffectiveBalanceIncrements,
   equivocatingIndices: Set<ValidatorIndex>
 ): number[] {
-  const deltas = Array<number>(numProtoNodes).fill(0);
+  const deltas = new Array<number>(numProtoNodes);
+  for (let i = 0; i < numProtoNodes; i++) {
+    deltas[i] = 0;
+  }
+
   // avoid creating new variables in the loop to potentially reduce GC pressure
   let oldBalance, newBalance: number;
   let currentIndex, nextIndex: number | null;