MediaWiki:AccordionView.js

( function( window, $, mw ) {    "use strict";    const tto = function tto( o ) {         const r = /^\[(.*)\]$/;        const t = Object.prototype.toString.call( o );        const e = r.exec( t )[ 1 ].split( /\s+/g )[ 1 ];        if ( /(?:HTML|SVG)(?:.+)Element/.test( e ) ) {            return "element";        } else if ( [ "HTMLCollection", "NodeList" ].includes( e ) ) {            return "domlist";        }        return e.toLowerCase;    };    function AccordionView( el ) {         if ( new.target !== AccordionView ) return new AccordionView( el );        this.options = Object.assign( { }, defaults );        if ( tto( el ) === "string" ) {            this.el = document.querySelector( el );            this.els = null;        } else if ( tto( el ) === "domlist" ) {             this.el = null;            this.els = el;        } else if ( tto( el ) === "element" ) {            this.el = el; this.els = null; } else { this.el = null; this.els = document.querySelectorAll( ".accordion-view" ); }

if ( this.els ) { Array.from( this.els ).forEach( function( elem, index ) {                this[ index ] = new AccordionView( elem );            }, this ); this.length = Array.from( this.els ).length; return this; }       this.cache = { }; this.entries = [ ]; this.configure; }   Object.assign( AccordionView, {         fn : AccordionView.prototype    } ); Object.assign( AccordionView.fn, {        each : function( callback, ctx ) {             if ( !this.els ) return;            if ( arguments.length === 1 ) ctx = this;            const a = Array.from( this );            return a.forEach( callback, ctx );        },        configure : function {             const obj = Object.assign( { }, this.el.dataset );            Object.keys( obj ).forEach( function( key ) { const orig = this.options[ key ], value = obj[ key ]; this.options = obj.hasOwnProperty( key ) ? value : orig; }, this );       },        renderAccordion : function {             const sections = this.el.querySelectorAll( ".accordion-section" );        }    } ); } )( this, jQuery, mediaWiki );