privateUtils privateUtils.js

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  export function findElementByTagNameRecursively(node, tagName) {
  // Return if the element matches the tag name
  if (node.nodeName.toLowerCase() === tagName) {
    return node;
  }
 
  // Get children of root node
  let children = node.childNodes;
  if (node.shadowRoot) {
    children = node.shadowRoot.childNodes;
  }
 
  // Recursively traverse children to find element with selector
  for (let i = 0, len = children.length; i < len; i++) {
    return findElementByTagNameRecursively(children[i], tagName);
  }
}