Upgrade to lru-cache 11.

README.md

@@ -6,7 +6,7 @@ First: this library only makes sense if your clients sit behind a firewall, or i
 
 This library monkey-patches either the Firebase Admin SDK or the Firebase JavaScript Client SDK to automatically encrypt and decrypt keys and values of your choosing using AES-SIV, and to compress encrypted string values.  Almost everything just works, except that `startAt` and `endAt` queries on encrypted data would produce randomly ordered results and so are forbidden.  `equalTo` queries will work fine, however, since a given plaintext value will always encrypt to the same ciphertext — but it will also let an attacker know if any two values are equal, even if they don't know what they are.
 
-The library works both in Node (20.x+) and in the browser.  In the browser, you need to also load [`crypto-js`](https://github.com/brix/crypto-js) (the following modules are sufficient: `core.js`, `lib-typedarrays.js`, `enc-base64.js`, `enc-base64url.js`, `sha1.js`, `md5.js`, `evpkdf.js`, `cipher-core.js`, `aes.js`, `mode-ctr.js`) and [`cryptojs-extension`](https://github.com/artjomb/cryptojs-extension) (only `build/siv.js` is required).  If you want to enable caching to enhance performance, then in the browser you'll also want to load [`node-lru-cache`](https://github.com/isaacs/node-lru-cache).  All these libraries are automatically included in the Node distribution.
+The library works both in Node (20.x+) and in the browser.  In the browser, you need to also load [`crypto-js`](https://github.com/brix/crypto-js) (the following modules are sufficient: `core.js`, `lib-typedarrays.js`, `enc-base64.js`, `enc-base64url.js`, `sha1.js`, `md5.js`, `evpkdf.js`, `cipher-core.js`, `aes.js`, `mode-ctr.js`) and [`cryptojs-extension`](https://github.com/artjomb/cryptojs-extension) (only `build/siv.js` is required).  If you want to enable caching to enhance performance, then in the browser you'll also want to load [`lru-cache`](https://github.com/isaacs/node-lru-cache) into the `lrucache` global variable.  All these libraries are automatically included in the Node distribution.
 
 Upon requiring this library, the `admin.database()` or `firebase.database()` method as well as the
 `app.App.database()` methods are monkey-patched to return a custom `FireCrypt` instance in place of
@@ -54,7 +54,7 @@ The `options` are as follows:
 * `keyCheckValue`: a value generated by a previous call to `configureFireCrypt()` used to verify that the `aes-siv` `key` used in both calls is the same.  If a different key was used to generate the `keyCheckValue` then an error with `firecrypt === 'WRONG_KEY'` will be thrown.
   * For convenience, the `keyCheckValue` is also available at any time via
   `admin.database().encryptionKeyCheckValue` or `firebase.database().encryptionKeyCheckValue`.
-* `cacheSize`: the maximum size in bytes of the encryption and decryption caches, used to improve performance.  In the browser, the caches will only be activated if `LRUCache` is defined; it should conform to the API of [`node-lru-cache`](https://github.com/isaacs/node-lru-cache).  You can also specify `encryptionCacheSize` and `decryptionCacheSize` separately.
+* `cacheSize`: the maximum size in bytes of the encryption and decryption caches, used to improve performance.  In the browser, the caches will only be activated if `lrucache.LRUCache` is defined; it should conform to the API of [`lru-cache`](https://github.com/isaacs/node-lru-cache).  You can also specify `encryptionCacheSize` and `decryptionCacheSize` separately.
 * `compression`: the compression algorithm to use.  Currently supported values are:
   * `deflate`: the classic, low-overhead deflate algorithm.
   * `none`: no compression.

eslint.config.mjs

@@ -17,7 +17,7 @@ export default [
         ...globals.es2017,
         CryptoJS: false,
         fflate: false,
-        LRUCache: false,
+        lrucache: false,
       },
       ecmaVersion: 2019,
       sourceType: 'module',

package.json

@@ -28,7 +28,7 @@
     "crypto-js": "^4.0.0",
     "cryptojs-extension": "github:reviewable/cryptojs-extension",
     "fflate": "^0.8.2",
-    "serialized-lru-cache": "^3.1.0"
+    "lru-cache": "^11.2.6"
   },
   "peerDependencies": {
     "firebase": "9.x || 10.x",

src/crypto.js

@@ -33,14 +33,14 @@ export default class Crypto {
     }
     this._compressionThreshold = options.compressionThreshold || 150;
 
-    if (typeof LRUCache === 'function') {
-      this._encryptionCache = new LRUCache({
-        max: options.encryptionCacheSize,
-        length: this._computeCacheItemSize,
+    if (typeof lrucache !== 'undefined') {
+      this._encryptionCache = new lrucache.LRUCache({
+        maxSize: options.encryptionCacheSize,
+        sizeCalculation: this._computeCacheItemSize,
       });
-      this._decryptionCache = new LRUCache({
-        max: options.decryptionCacheSize,
-        length: this._computeCacheItemSize,
+      this._decryptionCache = new lrucache.LRUCache({
+        maxSize: options.decryptionCacheSize,
+        sizeCalculation: this._computeCacheItemSize,
       });
     }
 

src/firecrypt.js

@@ -1,7 +1,7 @@
 if (typeof require !== 'undefined') {
   /* eslint-disable no-undef */
   if (typeof fflate === 'undefined') global.fflate = require('fflate');
-  if (typeof LRUCache === 'undefined') global.LRUCache = require('lru-cache');
+  if (typeof lrucache === 'undefined') global.lrucache = require('lru-cache');
   if (typeof CryptoJS === 'undefined') global.CryptoJS = require('crypto-js/core');
   require('crypto-js/lib-typedarrays');
   require('crypto-js/enc-base64');