refactor: don't use un-needed for loop

src/baseClient.ts

@@ -5,13 +5,12 @@ import {
   getCurrentSlot,
   deserializeSyncCommittee,
 } from "@lodestar/light-client/utils";
-import { init } from "@chainsafe/bls/switchable";
+import bls, { init } from "@chainsafe/bls/switchable";
 import { Mutex } from "async-mutex";
 import { fromHexString, toHexString } from "@chainsafe/ssz";
 import { deserializePubkeys, getDefaultClientConfig } from "#util.js";
 import { capella, LightClientUpdate } from "#types.js";
-import bls from "@chainsafe/bls/switchable.js";
-import { assertValidLightClientUpdate } from "@lodestar/light-client/validation.js";
+import { assertValidLightClientUpdate } from "@lodestar/light-client/validation";
 
 export interface BaseClientOptions {
   prover: IProver;
@@ -121,17 +120,20 @@ export default abstract class BaseClient {
     currentPeriod: number,
     startCommittee: Uint8Array[],
   ): Promise<{ syncCommittee: Uint8Array[]; period: number }> {
-    for (let period = startPeriod; period < currentPeriod; period += 1) {
     try {
       const updates = await this.options.prover.getSyncUpdate(
-          period,
-          currentPeriod,
+        startPeriod,
+        currentPeriod - startPeriod,
       );
 
       for (let i = 0; i < updates.length; i++) {
-          const curPeriod = period + i;
+        const curPeriod = startPeriod + i;
         const update = updates[i];
 
+        const updatePeriod = computeSyncPeriodAtSlot(
+          update.attestedHeader.beacon.slot,
+        );
+
         const validOrCommittee = await this.syncUpdateVerifyGetCommittee(
           startCommittee,
           curPeriod,
@@ -146,19 +148,17 @@ export default abstract class BaseClient {
           };
         }
 
-          await this.options.store.addUpdate(period, update);
+        await this.options.store.addUpdate(curPeriod, update);
 
         startCommittee = validOrCommittee as Uint8Array[];
-          period = curPeriod;
       }
     } catch (e) {
-        console.error(`failed to fetch sync update for period(${period})`);
+      console.error(`failed to fetch sync update for period(${startPeriod})`);
       return {
         syncCommittee: startCommittee,
-          period,
+        period: startPeriod,
       };
     }
-    }
     return {
       syncCommittee: startCommittee,
       period: currentPeriod,