Function attributeChangedCallback

esm/index.js:13–19

(records, o)

const defined = {};

const attributeChangedCallback = (records, o) => {
  for (let h = attributes.get(o), i = 0, {length} = records; i < length; i++) {
    const {target, attributeName, oldValue} = records[i];
    const newValue = target.getAttribute(attributeName);
    h.attributeChanged(attributeName, oldValue, newValue);
  }
};

const set = (value, m, l, o) => {
  const handler = create(o, {element: {enumerable: true, value}});