1996901 - Fix type errors in preference pane files

Status: NEW

(Firefox :: Settings UI, task, P3)

Description

[Mark Striemer [:mstriemer]]

We have some remaining TS errors in preferences.js, main.js, privacy.js, etc. Let's fix those up.

There may be some project/directory-level changes that could solve a lot of these:

• Many errors are around using noImplicitAny in our tsconfig.json
• document.querySelector() returns the Element type rather than HTMLElement, so setting hidden, etc show errors
• event listeners event param is any (should this be some other type from lib.gecko.dom.ts?)
  • Casting the Element to HTMLElement helps here, but even then "click" listeners set the type to Event not MouseEvent for example