Fix Firestore compile (#5869)

Author: schmidt-sebastian

packages/util/package.json

@@ -27,6 +27,7 @@
     "build": "rollup -c",
     "build:deps": "lerna run --scope @firebase/util --include-dependencies build",
     "dev": "rollup -c -w",
+    "prettier": "prettier --write 'src/**/*.ts' 'test/**/*.ts'",
     "test": "run-p lint test:all",
     "test:ci": "node ../../scripts/run_tests_in_ci.js -s test:all",
     "test:all": "run-p test:browser test:node",
@@ -57,4 +58,4 @@
     ],
     "reportDir": "./coverage/node"
   }
-}
+}

packages/util/src/errors.ts

@@ -73,7 +73,7 @@ export interface ErrorData {
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types
 export class FirebaseError extends Error {
   /** The custom name for all FirebaseErrors. */
-  readonly name = ERROR_NAME;
+  readonly name: string = ERROR_NAME;
 
   constructor(
     /** The error code for this error. */