import { Node } from "domhandler";
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/**
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* Given an array of nodes, remove any member that is contained by another.
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*
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* @param nodes Nodes to filter.
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* @returns Remaining nodes that aren't subtrees of each other.
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*/
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export declare function removeSubsets(nodes: Node[]): Node[];
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export declare const enum DocumentPosition {
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DISCONNECTED = 1,
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PRECEDING = 2,
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FOLLOWING = 4,
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CONTAINS = 8,
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CONTAINED_BY = 16
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}
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/**
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* Compare the position of one node against another node in any other document.
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* The return value is a bitmask with the following values:
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*
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* Document order:
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* > There is an ordering, document order, defined on all the nodes in the
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* > document corresponding to the order in which the first character of the
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* > XML representation of each node occurs in the XML representation of the
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* > document after expansion of general entities. Thus, the document element
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* > node will be the first node. Element nodes occur before their children.
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* > Thus, document order orders element nodes in order of the occurrence of
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* > their start-tag in the XML (after expansion of entities). The attribute
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* > nodes of an element occur after the element and before its children. The
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* > relative order of attribute nodes is implementation-dependent./
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*
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* Source:
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* http://www.w3.org/TR/DOM-Level-3-Core/glossary.html#dt-document-order
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*
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* @param nodeA The first node to use in the comparison
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* @param nodeB The second node to use in the comparison
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* @returns A bitmask describing the input nodes' relative position.
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*
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* See http://dom.spec.whatwg.org/#dom-node-comparedocumentposition for
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* a description of these values.
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*/
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export declare function compareDocumentPosition(nodeA: Node, nodeB: Node): number;
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/**
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* Sort an array of nodes based on their relative position in the document and
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* remove any duplicate nodes. If the array contains nodes that do not belong
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* to the same document, sort order is unspecified.
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*
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* @param nodes Array of DOM nodes.
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* @returns Collection of unique nodes, sorted in document order.
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*/
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export declare function uniqueSort<T extends Node>(nodes: T[]): T[];
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