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/** * Copyright (c) Facebook, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @format * @flow strict * @emails oncall+draft_js */ function isHTMLElement(node: ?Node): boolean { if (!node || !node.ownerDocument) { return false; } if (!node.ownerDocument.defaultView) { return node instanceof HTMLElement; } if (node instanceof node.ownerDocument.defaultView.HTMLElement) { return true; } return false; } module.exports = isHTMLElement;