Re-fix issue 495

changelog.txt

@@ -0,0 +1 @@
+fixed - Firestore Indexes deploy no longer crashes on an empty spec.

src/firestore/indexes.ts

@@ -453,8 +453,8 @@ export class FirestoreIndexes {
       fieldOverrides: spec.fieldOverrides || [],
     };
 
-    if (!spec.indexes) {
-      return;
+    if (!(spec.indexes && spec.indexes.length > 0)) {
+      return result;
     }
 
     // Try to detect use of the old API, warn the users.

src/test/firestore/indexes.spec.ts

@@ -40,6 +40,14 @@ describe("IndexValidation", () => {
     expect(upgraded).to.eql(VALID_SPEC);
   });
 
+  it("should accept an empty spec", () => {
+    const empty = {
+      indexes: [],
+    };
+
+    idx.validateSpec(idx.upgradeOldSpec(empty));
+  });
+
   it("should accept a valid v1beta1 index spec after upgrade", () => {
     idx.validateSpec(
       idx.upgradeOldSpec({