first commit

media/system/js/modal-content-select.min.js

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+function _extends(){return _extends=Object.assign?Object.assign.bind():function(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var s in n)Object.prototype.hasOwnProperty.call(n,s)&&(e[s]=n[s])}return e},_extends.apply(this,arguments)}const send=e=>{e.messageType=e.messageType||"joomla:content-select",window.parent.postMessage(e)};document.addEventListener("click",(e=>{const t=e.target.closest("[data-content-select]");if(!t)return;e.preventDefault();const n=_extends({},t.dataset);delete n.contentSelect,send(n)})),window.addEventListener("load",(()=>{const e=Joomla.getOptions("content-select-on-load");e&&send(e)}));