reject-import-preferences-module

Rejects usage of Preferences.sys.mjs, which is deprecated. Use Services.prefs directly instead.

Examples of incorrect code for this rule:

import { Preferences } from "resource://gre/modules/Preferences.sys.mjs";

ChromeUtils.defineESModuleGetters(lazy, {
  Preferences: "resource://gre/modules/Preferences.sys.mjs",
});

Examples of correct code for this rule:

Services.prefs.getStringPref("my.pref", "default");