Fix a few more undeclared properties

Summary: Ref T8538. Ref T8539. Ref T8541.

Test Plan: Eyeball it.

Reviewers: epriestley, de_jean_7777, benoittgt, #blessed_reviewers

Reviewed By: benoittgt

Subscribers: epriestley, Korvin

Maniphest Tasks: T8541, T8538, T8539

Differential Revision: https://secure.phabricator.com/D13293