From: Chris Duncan <chris@codecow.com>
Date: Mon, 18 May 2026 21:27:37 +0000 (-0700)
Subject: Improve type checking on cache update input.
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=b600e7b1eb2c0535f89f1f029866b9230fbb53c5;p=libnemo.git

Improve type checking on cache update input.
---

diff --git a/src/lib/ledger/cache.ts b/src/lib/ledger/cache.ts
index a58aadb..8ffc885 100644
--- a/src/lib/ledger/cache.ts
+++ b/src/lib/ledger/cache.ts
@@ -1,7 +1,7 @@
 //! SPDX-FileCopyrightText: 2025 Chris Duncan <chris@codecow.com>
 //! SPDX-License-Identifier: GPL-3.0-or-later
 
-import { APDU_CODES, LedgerResponse, LedgerTransport, STATUS_CODES, LISTEN_TIMEOUT, OPEN_TIMEOUT } from '.'
+import { APDU_CODES, LedgerResponse, LedgerTransport, LISTEN_TIMEOUT, OPEN_TIMEOUT, STATUS_CODES } from '.'
 import { Account } from '../account'
 import { Block } from '../block'
 import { BIP44_COIN_NANO, BIP44_PURPOSE, HARDENED_OFFSET } from '../constants'
@@ -12,9 +12,6 @@ export async function _cache (transport: LedgerTransport, index: number = 0, blo
 		if (typeof index !== 'number' || index < 0 || index >= HARDENED_OFFSET) {
 			throw new TypeError('Invalid account index')
 		}
-		if (!(block instanceof Block)) {
-			throw new TypeError('Invalid block format')
-		}
 		if (!(block.link instanceof Uint8Array)) {
 			throw new TypeError('Invalid block link')
 		}
diff --git a/src/lib/ledger/index.ts b/src/lib/ledger/index.ts
index 487f2b1..23d4a4d 100644
--- a/src/lib/ledger/index.ts
+++ b/src/lib/ledger/index.ts
@@ -229,7 +229,7 @@ export class Ledger {
 	 * @param {Rpc} rpc - Rpc class object with a node URL
 	 */
 	static async updateCache (index: number, hash: string, rpc: Rpc): Promise<LedgerResponse>
-	static async updateCache (index: number, input: any, node?: Rpc): Promise<LedgerResponse> {
+	static async updateCache (index: number, input: unknown, node?: Rpc): Promise<LedgerResponse> {
 		if (typeof input === 'string' && node instanceof Rpc) {
 			const data = {
 				'json_block': 'true',
@@ -239,7 +239,13 @@ export class Ledger {
 			if (!res || !res.ok || res.error) {
 				throw new Error(`Unable to fetch block info`, res)
 			}
-			input = res.contents
+			const { contents: { account, balance, link, previous, representative, signature } } = res
+			const block = new Block(account, balance, previous, representative).receive(link, 0)
+			block.signature = signature
+			input = block
+		}
+		if (!(input instanceof Block)) {
+			throw new TypeError('Invalid block format')
 		}
 		return queue<LedgerResponse>(async () => _cache(this.#transport, index, input))
 	}