next-csrf/example/node_modules/ally.js/esm/is/active-element.js

CSRF mitigation library for Next.js

// Determines if an element is the activeElement within its context, i.e. its document iFrame or ShadowHost

import contextToElement from '../util/context-to-element';
import getShadowHost from '../get/shadow-host';
import getDocument from '../util/get-document';

export default function (context) {
  var element = contextToElement({
    label: 'is/active-element',
    resolveDocument: true,
    context: context
  });

  var _document = getDocument(element);
  if (_document.activeElement === element) {
    return true;
  }

  var shadowHost = getShadowHost({ context: element });
  if (shadowHost && shadowHost.shadowRoot.activeElement === element) {
    return true;
  }

  return false;
}
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