update some metadata

Author: Feiyang1

packages-exp/app-compat/README.md

@@ -1,6 +1,5 @@
-# @firebase/app
+# @firebase/app-compat
 
-This package coordinates the communication between the different Firebase components and
-exposes the API surface to the user
+This is the compat package that recreates the v7 APIs.
 
 **This package is not intended for direct usage, and should only be used via the officially supported [firebase](https://www.npmjs.com/package/firebase) package.**

packages-exp/app-compat/package.json

@@ -36,14 +36,14 @@
     "xmlhttprequest": "1.8.0"
   },
   "devDependencies": {
-    "rollup": "1.32.1",
+    "rollup": "2.23.0",
     "rollup-plugin-json": "4.0.0",
     "rollup-plugin-replace": "2.2.0",
-    "rollup-plugin-typescript2": "0.26.0",
-    "typescript": "3.8.3"
+    "rollup-plugin-typescript2": "0.27.1",
+    "typescript": "3.9.7"
   },
   "repository": {
-    "directory": "packages/app",
+    "directory": "packages-exp/app-compat",
     "type": "git",
     "url": "https://github.com/firebase/firebase-js-sdk.git"
   },