Squashed 'thirdparty/preact/' content from commit b2d90cc

git-subtree-dir: thirdparty/preact
git-subtree-split: b2d90cc116f1d1998f7a7c98dc6986bf4c1841f4

1 files changed, 25 insertions, 0 deletions

diff --git a/src/dom/recycler.js b/src/dom/recycler.js
new file mode 100644
index 000000000..22085a916
--- /dev/null
+++ b/src/dom/recycler.js
@@ -0,0 +1,25 @@
+import { toLowerCase } from '../util';
+import { removeNode } from './index';
+
+/** DOM node pool, keyed on nodeName. */
+
+const nodes = {};
+
+export function collectNode(node) {
+	removeNode(node);
+
+	if (node instanceof Element) {
+		node._component = node._componentConstructor = null;
+
+		let name = node.normalizedNodeName || toLowerCase(node.nodeName);
+		(nodes[name] || (nodes[name] = [])).push(node);
+	}
+}
+
+
+export function createNode(nodeName, isSvg) {
+	let name = toLowerCase(nodeName),
+		node = nodes[name] && nodes[name].pop() || (isSvg ? document.createElementNS('http://www.w3.org/2000/svg', nodeName) : document.createElement(nodeName));
+	node.normalizedNodeName = name;
+	return node;
+}