next-csrf/example/node_modules/ally.js/get/shadow-host.js

CSRF mitigation library for Next.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

exports.default = function () {
  var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
      context = _ref.context;

  var element = (0, _contextToElement2.default)({
    label: 'get/shadow-host',
    context: context
  });

  // walk up to the root
  var container = null;

  while (element) {
    container = element;
    element = element.parentNode;
  }

  // https://developer.mozilla.org/en-US/docs/Web/API/Node.nodeType
  // NOTE: Firefox 34 does not expose ShadowRoot.host (but 37 does)
  if (container.nodeType === container.DOCUMENT_FRAGMENT_NODE && container.host) {
    // the root is attached to a fragment node that has a host
    return container.host;
  }

  return null;
};

var _contextToElement = require('../util/context-to-element');

var _contextToElement2 = _interopRequireDefault(_contextToElement);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

module.exports = exports['default'];
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