numerus/web/static/custom-elements@1.3.0.min.js

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!function(){"use strict";var e=(e,t)=>{const n=e=>{for(let t=0,{length:n}=e;t<n;t++)o(e[t])},o=({target:e,attributeName:t,oldValue:n})=>{e.attributeChangedCallback(t,n,e.getAttribute(t))};return(r,s)=>{const{observedAttributes:l}=r.constructor;return l&&e(s).then((()=>{new t(n).observe(r,{attributes:!0,attributeOldValue:!0,attributeFilter:l});for(let e=0,{length:t}=l;e<t;e++)r.hasAttribute(l[e])&&o({target:r,attributeName:l[e],oldValue:null})})),r}};
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