Fix bug where CLI would crash when customers upload an empty functions project

CHANGELOG.md

@@ -0,0 +1 @@
+- Fixes a crash when customers deploy an empty functions project (#3705)

src/deploy/functions/deploy.ts

@@ -53,12 +53,12 @@ export async function deploy(
     return;
   }
 
-  await checkHttpIam(context, options, payload);
-
   if (!context.functionsSourceV1 && !context.functionsSourceV2) {
     return;
   }
 
+  await checkHttpIam(context, options, payload);
+
   try {
     const want = payload.functions!.backend;
     const uploads: Promise<void>[] = [];
@@ -86,12 +86,14 @@ export async function deploy(
       options.config.src.functions.source,
       "Error: 'functions.source' is not defined"
     );
-    logSuccess(
-      clc.green.bold("functions:") +
-        " " +
-        clc.bold(options.config.src.functions.source) +
-        " folder uploaded successfully"
-    );
+    if (uploads.length) {
+      logSuccess(
+        clc.green.bold("functions:") +
+          " " +
+          clc.bold(options.config.src.functions.source) +
+          " folder uploaded successfully"
+      );
+    }
   } catch (err) {
     logWarning(clc.yellow("functions:") + " Upload Error: " + err.message);
     throw err;

src/deploy/functions/prepare.ts

@@ -89,9 +89,6 @@ export async function prepare(
   const wantBackend = await runtimeDelegate.discoverSpec(runtimeConfig, firebaseEnvs);
   wantBackend.environmentVariables = { ...userEnvs, ...firebaseEnvs };
   payload.functions = { backend: wantBackend };
-  if (backend.isEmptyBackend(wantBackend)) {
-    return;
-  }
 
   // Note: Some of these are premium APIs that require billing to be enabled.
   // We'd eventually have to add special error handling for billing APIs, but
@@ -109,12 +106,14 @@ export async function prepare(
     await Promise.all(enablements);
   }
 
-  logBullet(
-    clc.cyan.bold("functions:") +
-      " preparing " +
-      clc.bold(options.config.src.functions.source) +
-      " directory for uploading..."
-  );
+  if (wantBackend.cloudFunctions.length) {
+    logBullet(
+      clc.cyan.bold("functions:") +
+        " preparing " +
+        clc.bold(options.config.src.functions.source) +
+        " directory for uploading..."
+    );
+  }
   if (wantBackend.cloudFunctions.find((fn) => fn.platform === "gcfv1")) {
     context.functionsSourceV1 = await prepareFunctionsUpload(runtimeConfig, options);
   }