Dir exists separate fn

lib/dirExists.mjs

@@ -0,0 +1,7 @@
+import { stat } from 'fs'
+
+const dirExists = async storeDir => await new Promise(resolve => stat(storeDir, staterr => resolve(!staterr)))
+
+export {
+  dirExists,
+}

lib/onLedger.mjs

@@ -1,7 +1,7 @@
 import { writeFile } from 'fs'
-import { stat } from 'fs'
 import { ledgerIndexToFolders } from './ledgerIndexToFolders.mjs'
 import { computeBinaryTransactionHash } from './computeBinaryTransactionHash.mjs'
+import { dirExists } from './dirExists.mjs'
 import 'dotenv/config'
 
 const obtainedHumanReadableLedgers = []
@@ -17,9 +17,7 @@ const onLedger = async ({
       const relativeStoreDir = 'store/' + networkId + '/' + ledgerIndexToFolders(ledger.ledger_index)
       const storeDir = new URL('../' + relativeStoreDir, import.meta.url).pathname
 
-      const dirExists = await new Promise(resolve => stat(storeDir, staterr => resolve(!staterr)))
-
-      if (dirExists) {
+      if (await dirExists(storeDir)) {
         ;[
           ...(
             obtainedBinaryTxLedgers.indexOf(ledger.ledger_index) < 0
@@ -66,7 +64,7 @@ const onLedger = async ({
               /**
                * Merge transaction hashes with the raw tx data
                */
-              results.ledger.transactions.map(t => {
+              ;(results?.ledger?.transactions || []).map(t => {
                 return Object.assign(t, { tx_id: computeBinaryTransactionHash(t.tx_blob), })
               })
 
@@ -79,6 +77,7 @@ const onLedger = async ({
             if (
               results?.ledger?.parent_hash
               && obtainedHumanReadableLedgers.indexOf(ledger.ledger_index) < 0
+              && results?.ledger?.ledger_hash === ledger?.ledger_hash
             ) {
               /**
                * See comment above "Store in array" ... - first one will be stored