Copy typings into firebase/index.d.ts.

Author: yuchenshi

packages/firebase/index.d.ts

@@ -15,8 +15,6 @@
  * limitations under the License.
  */
 
-import { EmulatorMockTokenOptions } from '@firebase/util';
-
 /**
  * <code>firebase</code> is a global namespace from which all Firebase
  * services are accessed.
@@ -9986,6 +9984,81 @@ declare namespace firebase.firestore {
     name: string;
     stack?: string;
   }
+
+  type FirebaseSignInProvider =
+    | 'custom'
+    | 'email'
+    | 'password'
+    | 'phone'
+    | 'anonymous'
+    | 'google.com'
+    | 'facebook.com'
+    | 'github.com'
+    | 'twitter.com'
+    | 'microsoft.com'
+    | 'apple.com';
+
+  interface FirebaseIdToken {
+    // Always set to https://securetoken.google.com/PROJECT_ID
+    iss: string;
+
+    // Always set to PROJECT_ID
+    aud: string;
+
+    // The user's unique id
+    sub: string;
+
+    // The token issue time, in seconds since epoch
+    iat: number;
+
+    // The token expiry time, normally 'iat' + 3600
+    exp: number;
+
+    // The user's unique id, must be equal to 'sub'
+    user_id: string;
+
+    // The time the user authenticated, normally 'iat'
+    auth_time: number;
+
+    // The sign in provider, only set when the provider is 'anonymous'
+    provider_id?: 'anonymous';
+
+    // The user's primary email
+    email?: string;
+
+    // The user's email verification status
+    email_verified?: boolean;
+
+    // The user's primary phone number
+    phone_number?: string;
+
+    // The user's display name
+    name?: string;
+
+    // The user's profile photo URL
+    picture?: string;
+
+    // Information on all identities linked to this user
+    firebase: {
+      // The primary sign-in provider
+      sign_in_provider: FirebaseSignInProvider;
+
+      // A map of providers to the user's list of unique identifiers from
+      // each provider
+      identities?: { [provider in FirebaseSignInProvider]?: string[] };
+    };
+
+    // Custom claims set by the developer
+    [claim: string]: unknown;
+
+    uid?: never; // Try to catch a common mistake of "uid" (should be "sub" instead).
+  }
+
+  export type EmulatorMockTokenOptions = (
+    | { user_id: string }
+    | { sub: string }
+  ) &
+    Partial<FirebaseIdToken>;
 }
 
 export default firebase;