next-csrf
Version:
CSRF mitigation library for Next.js
30 lines (25 loc) • 1.15 kB
JavaScript
// Node.compareDocumentPosition is available since IE9
// see https://developer.mozilla.org/en-US/docs/Web/API/Node.compareDocumentPosition
// callback returns true when element is contained by parent or is the parent suited for use with Array.some()
/*
USAGE:
var isChildOf = getParentComparator({parent: someNode});
listOfElements.some(isChildOf)
*/
export function getParentComparator() {
var _ref = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
parent = _ref.parent,
element = _ref.element,
includeSelf = _ref.includeSelf;
if (parent) {
return function isChildOf(node) {
return Boolean(includeSelf && node === parent || parent.compareDocumentPosition(node) & Node.DOCUMENT_POSITION_CONTAINED_BY);
};
} else if (element) {
return function isParentOf(node) {
return Boolean(includeSelf && element === node || node.compareDocumentPosition(element) & Node.DOCUMENT_POSITION_CONTAINED_BY);
};
}
throw new TypeError('util/compare-position#getParentComparator required either options.parent or options.element');
}
//# sourceMappingURL=compare-position.js.map