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import _WidgetBase = require("dijit/_WidgetBase");
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type _WidgetBaseConstructor = typeof _WidgetBase;
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export type DojoNodePosition = "first" | "after" | "before" | "last" | "replace" | "only" | number;
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export interface BuildContext<TNode extends Node = Node> {
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getDomNode(): TNode;
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placeAt(refNode: string | Node, position?: DojoNodePosition): void;
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}
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export function isNode(el: any): el is Node {
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return el && el.nodeName && el.nodeType;
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}
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export function isElementNode(el: any): el is Element {
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return isNode(el) && el.nodeType === 1;
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}
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export function isTextNode(el: any): el is Text {
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return isNode(el) && el.nodeType === 3;
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}
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export function isProcessingInstructionNode(el: any): el is ProcessingInstruction {
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return isNode(el) && el.nodeType === 7;
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}
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export function isCommentNode(el: any): el is Comment {
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return isNode(el) && el.nodeType === 8;
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}
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export function isDocumentNode(el: any): el is Document {
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return isNode(el) && el.nodeType === 9;
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}
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export function isDocumentTypeNode(el: any): el is DocumentType {
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return isNode(el) && el.nodeType === 10;
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}
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export function isDocumentFragmentNode(el: any): el is DocumentFragment {
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return isNode(el) && el.nodeType === 11;
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}
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export function isWidget(v: any): v is _WidgetBase {
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return v && "domNode" in v;
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}
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export function isBuildContext(v: any): v is BuildContext {
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return typeof v === "object" && typeof v.getDomElement === "function";
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}
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export function isPlainObject(v: object) {
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if (typeof v !== "object")
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return false;
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const vp = Object.getPrototypeOf(v);
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return !vp || vp === Object.prototype;
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}
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export function isWidgetConstructor(v: any): v is _WidgetBaseConstructor {
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return typeof v === "function" && v.prototype && (
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"domNode" in v.prototype ||
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"buildRendering" in v.prototype
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);
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}
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/** Tests whether the specified node is placed in visible dom.
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* @param {Node} node The node to test
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*/
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export function isInPage(node: Node) {
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return (node === document.body) ? false : document.body.contains(node);
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}
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