use spark for md5 instead of non-exported member from common

Author: typotter

package.json

@@ -60,7 +60,8 @@
     "webpack-cli": "^6.0.1"
   },
   "dependencies": {
-    "@eppo/js-client-sdk-common": "4.8.4"
+    "@eppo/js-client-sdk-common": "4.8.4",
+    "spark-md5": "^3.0.2"
   },
   "packageManager": "[email protected]+sha512.a6b2f7906b721bba3d67d4aff083df04dad64c399707841b7acf00f6b133b7ac24255f2652fa22ae3534329dc6180534e98d17432037ff6fd140556e2bb3137e"
 }

src/index.ts

@@ -23,7 +23,7 @@ import {
   IBanditLogger,
   IObfuscatedPrecomputedConfigurationResponse,
 } from '@eppo/js-client-sdk-common';
-import { getMD5Hash } from '@eppo/js-client-sdk-common/dist/obfuscation';
+import SparkMD5 from 'spark-md5';
 
 import { assignmentCacheFactory } from './cache/assignment-cache-factory';
 import HybridAssignmentCache from './cache/hybrid-assignment-cache';
@@ -365,7 +365,7 @@ export class EppoJSClient extends EppoClient {
  */
 export function buildStorageKeySuffix(apiKey: string): string {
   // Note that we use the last 8 characters of hashed API key to create per-API key persistent storages and caches
-  return getMD5Hash(apiKey).slice(-8);
+  return new SparkMD5().append(apiKey).end().slice(-8);
 }
 
 /**