feat: added DisabledVault to disable id cache when noFunctional is set

Author: Jaissica Hora

src/mp-instance.ts

@@ -37,7 +37,7 @@ import KitBlocker from './kitBlocking';
 import ConfigAPIClient, { IKitConfigs } from './configAPIClient';
 import IdentityAPIClient from './identityApiClient';
 import { isFunction, parseConfig } from './utils';
-import { LocalStorageVault } from './vault';
+import { DisabledVault, LocalStorageVault } from './vault';
 import { removeExpiredIdentityCacheDates } from './identity-utils';
 import IntegrationCapture from './integrationCapture';
 import { IPreInit, processReadyQueue } from './pre-init-utils';
@@ -1522,9 +1522,11 @@ function createKitBlocker(config, mpInstance) {
 }
 
 function createIdentityCache(mpInstance) {
-    return new LocalStorageVault(`${mpInstance._Store.storageName}-id-cache`, {
-        logger: mpInstance.Logger,
-    });
+    const cacheKey = `${mpInstance._Store.storageName}-id-cache`;
+    if (mpInstance._Store.getNoFunctional()) {
+        return new DisabledVault(cacheKey, { logger: mpInstance.Logger });
+    }
+    return new LocalStorageVault(cacheKey, { logger: mpInstance.Logger });
 }
 
 function runPreConfigFetchInitialization(mpInstance, apiKey, config) {

src/vault.ts

@@ -102,4 +102,28 @@ export class SessionStorageVault<StorableItem> extends BaseVault<StorableItem> {
     constructor(storageKey: string, options?: IVaultOptions) {
         super(storageKey, window.sessionStorage, options);
     }
+}
+
+// DisabledVault is used when persistence is disabled by privacy flags.
+export class DisabledVault<StorableItem> extends BaseVault<StorableItem> {
+    constructor(storageKey: string, options?: IVaultOptions) {
+        super(storageKey, window.localStorage, options);
+        this.contents = null;
+    }
+
+    public store(_item: StorableItem): void {
+        this.contents = null;
+    }
+
+    public retrieve(): StorableItem | null {
+        this.contents = null;
+        return null;
+    }
+
+    public purge(): void {
+        this.contents = null;
+        try {
+            window.localStorage.removeItem(this._storageKey);
+        } catch {}
+    }
 }