mediawiki-skins-Vector/resources/skins.vector.js/clientPreferences.json

{
	"vector-feature-custom-font-size": {
		"options": [ "0", "1", "2" ],
		"preferenceKey": "vector-font-size"
	},
	"vector-feature-limited-width": {
		"options": [ "1", "0" ],
		"preferenceKey": "vector-limited-width"
	},
	"skin-theme": {
		"options": [ "os", "day", "night" ],
		"preferenceKey": "vector-theme",
		"betaMessage": "vector-night-mode-beta-tag",
		"linkLabelMessage": "vector-night-mode-issue-reporting-link-label",
		"linkLabelUrl": "vector-night-mode-issue-reporting-notice-url"
	}
}