MediaWiki:Common.js

function overrideSourceEdit() {
	var sourceEdit = document.getElementById('ca-edit');
	if (sourceEdit) {
	 var url = sourceEdit.getAttribute('href');
	 sourceEdit.setAttribute('href', url.split('&section')[0]);
	}
}

function getDarkModePreference() {
	return window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches;
}

function applyDarkMode() {
	var body = document.querySelector('body');
	if (getDarkModePreference()) {
		if (!body.classList.contains('dark-mode')) { body.classList.add('dark-mode'); }
		document.documentElement.setAttribute('theme', 'dark');
	} else {
		if (body.classList.contains('dark-mode')) { body.classList.remove('dark-mode'); }
    	document.documentElement.setAttribute('theme', 'light');
	}
}

applyDarkMode();
overrideSourceEdit();