Fix init database (#3445)

firebase · Jun 8, 2021 · 44ae32e · 44ae32e
1 parent 9f4ba03
commit 44ae32e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,4 @@
 - Add Warsaw (europe-central2) Cloud Function Location to Firebase Extension template.
 - Add Singapore (asia-southeast1) as a valid Firebase Realtime Database location.
 - Fixes `firebase init database` failure when no project is selected (#2981)
+- Fix issue where `firebase init database` overwrites entire `firebase.json` (#3299)
diff --git a/src/init/features/database.ts b/src/init/features/database.ts
@@ -119,7 +119,7 @@ async function createDefaultDatabaseInstance(project: string): Promise<DatabaseI
  * @param config legacy config parameter. not used for database setup.
  */
 export async function doSetup(setup: DatabaseSetup, config: Config): Promise<void> {
-  setup.config = {};
+  setup.config = setup.config || {};
 
   let instanceDetails;
   if (setup.projectId) {