feat: add fallback to empty object for transaction flags

Author: N3TC4T

src/common/libs/ledger/parser/common/flag.ts

@@ -35,9 +35,10 @@ class FlagParser {
         const definitions = NetworkService.getNetworkDefinitions();
 
         // if the transaction flags is not present in the definitions use default flags
-        const transactionFlags = definitions?.transactionFlags ?? binary.DEFAULT_DEFINITIONS.TRANSACTION_FLAGS;
+        const transactionFlags =
+            definitions?.transactionFlags ?? (binary.DEFAULT_DEFINITIONS as any).TRANSACTION_FLAGS ?? {};
         const indicesFlags =
-            definitions?.transactionFlagsIndices ?? binary.DEFAULT_DEFINITIONS.TRANSACTION_FLAGS_INDICES;
+            definitions?.transactionFlagsIndices ?? (binary.DEFAULT_DEFINITIONS as any).TRANSACTION_FLAGS_INDICES ?? {};
 
         // transaction flags
         if (type in TransactionTypes && Object.prototype.hasOwnProperty.call(transactionFlags, type)) {