test: add type-check tests for v1/v2 LedgerTransactionExpanded types

Verify that:
- LedgerTransactionExpanded (v2) uses flat format with metaData
- LedgerTransactionExpandedV1 (v1) uses wrapped format with tx_json/meta
- Both are correctly assignable to their respective Ledger types

Author: slurpyone

packages/xrpl/test/utils/hashLedger.test.ts

@@ -1,6 +1,12 @@
 import { assert } from 'chai'
 
 import { ValidationError, XrplError } from '../../src'
+import {
+  Ledger,
+  LedgerV1,
+  LedgerTransactionExpanded,
+  LedgerTransactionExpandedV1,
+} from '../../src/models/ledger/Ledger'
 import { hashes } from '../../src/utils'
 import requests from '../fixtures/requests'
 import responses from '../fixtures/responses'
@@ -150,4 +156,68 @@ describe('hashLedger', function () {
       'transactionHash in header does not match computed hash of transactions',
     )
   })
+
+  describe('LedgerTransactionExpanded types', function () {
+    it('Ledger (v2) transactions use flat format with metaData', function () {
+      const tx: LedgerTransactionExpanded = {
+        Account: 'rPrioTXJgZJF8bpdXq2X73PcVPfvYqjVKd',
+        TransactionType: 'Payment',
+        Fee: '11',
+        Sequence: 1,
+        Flags: 0,
+        SigningPubKey: '',
+        TxnSignature: '',
+        hash: '044314FE34236A262DA692789CE5B48CA1A3CEC078B1A4ECCD65F4B61A9EB0A7',
+        metaData: {
+          AffectedNodes: [],
+          TransactionIndex: 0,
+          TransactionResult: 'tesSUCCESS',
+        },
+      }
+
+      // Verify v2 expanded transactions are assignable to Ledger.transactions
+      const ledgerV2: Pick<Ledger, 'transactions'> = {
+        transactions: [tx],
+      }
+
+      assert.isArray(ledgerV2.transactions)
+      assert.strictEqual(ledgerV2.transactions![0].hash, tx.hash)
+      assert.isDefined(ledgerV2.transactions![0].metaData)
+    })
+
+    it('LedgerV1 transactions use wrapped format with tx_json and meta', function () {
+      const tx: LedgerTransactionExpandedV1 = {
+        tx_json: {
+          Account: 'rPrioTXJgZJF8bpdXq2X73PcVPfvYqjVKd',
+          TransactionType: 'Payment',
+          Fee: '11',
+          Sequence: 1,
+          Flags: 0,
+          SigningPubKey: '',
+          TxnSignature: '',
+        },
+        meta: {
+          AffectedNodes: [],
+          TransactionIndex: 0,
+          TransactionResult: 'tesSUCCESS',
+        },
+        hash: '044314FE34236A262DA692789CE5B48CA1A3CEC078B1A4ECCD65F4B61A9EB0A7',
+        validated: true,
+        ledger_index: 93637993,
+        close_time_iso: '2025-01-22T21:13:50Z',
+        ledger_hash:
+          '058FDA696458896EC515AC19C3EDC8CD0E163A3620CA6B314165E5BAED70846A',
+      }
+
+      // Verify v1 expanded transactions are assignable to LedgerV1.transactions
+      const ledgerV1: Pick<LedgerV1, 'transactions'> = {
+        transactions: [tx],
+      }
+
+      assert.isArray(ledgerV1.transactions)
+      assert.strictEqual(ledgerV1.transactions![0].hash, tx.hash)
+      assert.isDefined(ledgerV1.transactions![0].tx_json)
+      assert.isDefined(ledgerV1.transactions![0].meta)
+    })
+  })
 })