MediaWiki:Vector.js

// "Add section" at the bottom
mw.loader.using( 'mediawiki.util', () => {
	var $newSectionLink = $( '#ca-addsection a' );
	if ( $newSectionLink.length === 0 || $( '.ext-discussiontools-emptystate' ).length > 0 ) return;
	
	if ( mw.config.get( 'wgArticleId' ) === 0 || mw.config.get( 'wgNamespaceNumber' ) === 0 || mw.config.get( 'wgAction' ) !== 'view' ) return;
	
	$( () => {
		mw.loader.using( [ 'oojs-ui' ], function() {
			var duplicateLink = new OO.ui.ButtonWidget( {
				href: $newSectionLink.attr( 'href' ),
				label: $newSectionLink.text(),
				flags: [ 'primary', 'progressive' ],
				icon: 'speechBubbleAdd'
			} );
			var $ruwikiAddSection = $( '<div>' ).addClass( 'ruwiki-addsection cd-addTopicButton' );
			
			$ruwikiAddSection.append( duplicateLink.$element );
			$( '#mw-content-text' ).append( $ruwikiAddSection );
		} );
	} );
} );