From b8e94b8bf770a0678f2c7fa9c74c3372601137e9 Mon Sep 17 00:00:00 2001
From: Tuyen Nguyen <vutuyen2636@gmail.com>
Date: Fri, 17 Dec 2021 09:14:32 +0700
Subject: [PATCH] Don't precompute epoch transition at pre genesis

---
 packages/lodestar/src/chain/precomputeNextEpochTransition.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/lodestar/src/chain/precomputeNextEpochTransition.ts b/packages/lodestar/src/chain/precomputeNextEpochTransition.ts
index 43da104549e..c4507ecd94a 100644
--- a/packages/lodestar/src/chain/precomputeNextEpochTransition.ts
+++ b/packages/lodestar/src/chain/precomputeNextEpochTransition.ts
@@ -49,6 +49,8 @@ export class PrecomputeNextEpochTransitionScheduler {
 
     const {slot: headSlot, blockRoot} = this.chain.forkChoice.getHead();
     const nextEpoch = computeEpochAtSlot(clockSlot) + 1;
+    // Don't want to pre compute epoch transition at pre genesis
+    if (nextEpoch <= 0) return;
     // node may be syncing or out of synced
     if (headSlot < clockSlot) {
       this.metrics?.precomputeNextEpochTransition.count.inc({result: "skip"}, 1);