Make memory lru gc the default

Author: wu-hui

packages/firestore/src/api/cache_config.ts

@@ -62,7 +62,9 @@ class MemoryLocalCacheImpl implements MemoryLocalCache {
       this._offlineComponentProvider =
         settings.garbageCollector._offlineComponentProvider;
     } else {
-      this._offlineComponentProvider = new MemoryOfflineComponentProvider();
+      this._offlineComponentProvider = new LruGcMemoryOfflineComponentProvider(
+        undefined
+      );
     }
   }
 

packages/firestore/src/core/firestore_client.ts

@@ -62,6 +62,7 @@ import { Aggregate } from './aggregate';
 import { NamedQuery } from './bundle';
 import {
   ComponentConfiguration,
+  LruGcMemoryOfflineComponentProvider,
   MemoryOfflineComponentProvider,
   OfflineComponentProvider,
   OnlineComponentProvider
@@ -336,7 +337,7 @@ async function ensureOfflineComponents(
       logDebug(LOG_TAG, 'Using default OfflineComponentProvider');
       await setOfflineComponentProvider(
         client,
-        new MemoryOfflineComponentProvider()
+        new LruGcMemoryOfflineComponentProvider(undefined)
       );
     }
   }

packages/firestore/test/integration/util/helpers.ts

@@ -25,6 +25,7 @@ import {
   DocumentData,
   DocumentReference,
   Firestore,
+  memoryEagerGarbageCollector,
   memoryLocalCache,
   memoryLruGarbageCollector,
   newTestApp,
@@ -148,10 +149,14 @@ export function withTestDb(
 export function withEnsuredEagerGcTestDb(
   fn: (db: Firestore) => Promise<void>
 ): Promise<void> {
+  const newSettings = { ...DEFAULT_SETTINGS };
+  newSettings.localCache = memoryLocalCache({
+    garbageCollector: memoryEagerGarbageCollector()
+  });
   return withTestDbsSettings(
     false,
     DEFAULT_PROJECT_ID,
-    { ...DEFAULT_SETTINGS, cacheSizeBytes: 1 * 1024 * 1024 },
+    newSettings,
     1,
     async ([db]) => {
       return fn(db);