wikimedia/mediawiki-extensions-Translate

/*!
 * Introduces a toggle icon than can be used to hide navigation menu in vector
 * @author Niklas Laxström
 * @license GPL-2.0-or-later
 */
( function () {
    'use strict';

    var $body = $( document.body );

    // Bail out on the new Vector skin
    if ( $( '#mw-sidebar-button' ).length ) {
        return;
    }

    if ( $body.width() < 1000 || mw.storage.get( 'translate-navitoggle' ) === '1' ) {
        $body.addClass( 'tux-navi-collapsed' );
    }

    $( function () {
        var rtl = $body.hasClass( 'rtl' );
        var delim = rtl ?
            $( '#mw-head-base' ).css( 'margin-right' ) :
            $( '#mw-head-base' ).css( 'margin-left' );

        var $miniLogo = $( '#p-logo' )
            .clone()
            .removeAttr( 'id' )
            .addClass( 'tux-navi-minilogo' );

        var $toggle = $( '<div>' )
            .addClass( 'tux-navitoggle' )
            .css( rtl ? 'right' : 'left', delim )
            .on( 'click', function () {
                $body.toggleClass( 'tux-navi-collapsed' );
                mw.storage.set(
                    'translate-navitoggle',
                    String( Number( $body.hasClass( 'tux-navi-collapsed' ) ) )
                );
            } );

        $body.append( $miniLogo, $toggle );
    } );
}() );