From 600c39d05872e01a0ba7324073cfa24aa7d7a2ed Mon Sep 17 00:00:00 2001
From: Akhil Raveendran <itsrakhil@google.com>
Date: Tue, 7 Apr 2026 14:48:09 -0700
Subject: [PATCH] feat: enable fdcrealtime by default and inject clientCache
 into SDK generation configurations

---
 src/experiments.ts                        |  2 +-
 src/init/features/dataconnect/sdk.spec.ts | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/experiments.ts b/src/experiments.ts
index 0fd6b9b39e7..b774e53311c 100644
--- a/src/experiments.ts
+++ b/src/experiments.ts
@@ -195,7 +195,7 @@ export const ALL_EXPERIMENTS = experiments({
   },
   fdcrealtime: {
     shortDescription: "Enable Firebase Data Connect realtime feature.",
-    default: false,
+    default: true,
     public: false,
   },
 });
diff --git a/src/init/features/dataconnect/sdk.spec.ts b/src/init/features/dataconnect/sdk.spec.ts
index 17e428614e9..b7055d2898c 100644
--- a/src/init/features/dataconnect/sdk.spec.ts
+++ b/src/init/features/dataconnect/sdk.spec.ts
@@ -63,6 +63,7 @@ describe("addSdkGenerateToConnectorYaml", () => {
         packageJsonDir: "../app",
         react: false,
         angular: false,
+        clientCache: {},
       },
     ]);
   });
@@ -77,6 +78,7 @@ describe("addSdkGenerateToConnectorYaml", () => {
         packageJsonDir: "../app",
         react: true,
         angular: false,
+        clientCache: {},
       },
     ]);
   });
@@ -88,6 +90,7 @@ describe("addSdkGenerateToConnectorYaml", () => {
       {
         outputDir: "../app/lib/dataconnect_generated",
         package: "dataconnect_generated/generated.dart",
+        clientCache: {},
       },
     ]);
   });
@@ -99,6 +102,7 @@ describe("addSdkGenerateToConnectorYaml", () => {
       {
         outputDir: "../app/src/main/kotlin",
         package: "com.google.firebase.dataconnect.generated",
+        clientCache: {},
       },
     ]);
   });
@@ -110,6 +114,7 @@ describe("addSdkGenerateToConnectorYaml", () => {
       {
         outputDir: "../FirebaseDataConnectGenerated",
         package: "DataConnectGenerated",
+        clientCache: {},
       },
     ]);
   });
@@ -132,6 +137,12 @@ describe("addSdkGenerateToConnectorYaml", () => {
     expect((connectorYaml.generate?.javascriptSdk as any)[0].clientCache).to.deep.equal({});
   });
 
+  it("should NOT inject clientCache if fdcrealtime is disabled", () => {
+    sinon.stub(experiments, "isEnabled").withArgs("fdcrealtime").returns(false);
+    addSdkGenerateToConnectorYaml(connectorInfo, connectorYaml, app);
+    expect((connectorYaml.generate?.javascriptSdk as any)[0].clientCache).to.be.undefined;
+  });
+
   it("should NOT overwrite existing clientCache configuration", () => {
     sinon.stub(experiments, "isEnabled").withArgs("fdcrealtime").returns(true);
     connectorYaml.generate = {