Function undom

src/undom.js:26–220

()

 *	@returns {Document} document
 */
export default function undom() {

	function isElement(node) {
		return node.nodeType===1;
	}

	class Node {
		constructor(nodeType, nodeName) {
			this.nodeType = nodeType;
			this.nodeName = nodeName;
			this.childNodes = [];
		}
		get nextSibling() {
			let p = this.parentNode;
			if (p) return p.childNodes[findWhere(p.childNodes, this, true) + 1];
		}
		get previousSibling() {
			let p = this.parentNode;
			if (p) return p.childNodes[findWhere(p.childNodes, this, true) - 1];
		}
		get firstChild() {
			return this.childNodes[0];
		}
		get lastChild() {
			return this.childNodes[this.childNodes.length-1];
		}
		appendChild(child) {
			this.insertBefore(child);
			return child;
		}
		insertBefore(child, ref) {
			child.remove();
			child.parentNode = this;
			!ref ? this.childNodes.push(child) : splice(this.childNodes, ref, child);
			return child;
		}
		replaceChild(child, ref) {
			if (ref.parentNode===this) {
				this.insertBefore(child, ref);
				ref.remove();
				return ref;
			}
		}
		removeChild(child) {
			splice(this.childNodes, child);
			return child;
		}
		remove() {
			if (this.parentNode) this.parentNode.removeChild(this);
		}
	}


	class Text extends Node {
		constructor(text) {
			super(3, '#text');					// TEXT_NODE
			this.nodeValue = text;
		}