Function updateUserActivity

updateUserActivity(
    activities: Record<string, UserActivity>,
    userId: string,
    updates: Partial<UserActivity>,
): Record<string, UserActivity>
Immutably update a user's activity with partial updates.
Parameters
- activities: Record<string, UserActivity>
- userId: string
- updates: Partial<UserActivity>
Returns Record<string, UserActivity>
- Defined in packages/react-assignments/src/utils/activityUtils.ts:57