Inconvenient type of UserRecord.customClaims

[anantakrishna]

Environment

• Operating System version: Windows
• Firebase SDK version: 8.11.0
• Firebase Product: auth
• Node.js version: 10.20.1
• NPM version: 6.14.4

The problem

Typing of UserRecord.customClaims is Object.
This is inconvenient to use typescript optional chaining in this case.

const user = await admin.auth().getUser(uid);
if (user.customClaims?.roles?.coordinator)
  …

Produces the following error:

Property 'roles' does not exist on type 'Object'.ts(2339)

This contrasts to the DecodedIdToken which has [key: string]: any; indexer.