Merge commit '30b577138dda685f65a8529be1866afa6e321845' as 'thirdparty/preact'

1 files changed, 51 insertions, 0 deletions

diff --git a/thirdparty/preact/src/h.js b/thirdparty/preact/src/h.js
new file mode 100644
index 000000000..e57ce4bde
--- /dev/null
+++ b/thirdparty/preact/src/h.js
@@ -0,0 +1,51 @@
+import { VNode } from './vnode';
+import options from './options';
+
+
+let stack = [];
+
+
+
+/** JSX/hyperscript reviver
+*	Benchmarks: https://esbench.com/bench/57ee8f8e330ab09900a1a1a0
+ *	@see http://jasonformat.com/wtf-is-jsx
+ *	@public
+ *  @example
+ *  /** @jsx h *\/
+ *  import { render, h } from 'preact';
+ *  render(<span>foo</span>, document.body);
+ */
+export function h(nodeName, attributes) {
+	let children, lastSimple, child, simple, i;
+	for (i=arguments.length; i-- > 2; ) {
+		stack.push(arguments[i]);
+	}
+	if (attributes && attributes.children) {
+		if (!stack.length) stack.push(attributes.children);
+		delete attributes.children;
+	}
+	while (stack.length) {
+		if ((child = stack.pop()) instanceof Array) {
+			for (i=child.length; i--; ) stack.push(child[i]);
+		}
+		else if (child!=null && child!==false) {
+			if (typeof child=='number' || child===true) child = String(child);
+			simple = typeof child=='string';
+			if (simple && lastSimple) {
+				children[children.length-1] += child;
+			}
+			else {
+				if (children) children.push(child);
+				else children = [child];
+				lastSimple = simple;
+			}
+		}
+	}
+
+	let p = new VNode(nodeName, attributes || undefined, children);
+
+	// if a "vnode hook" is defined, pass every created VNode to it
+	if (options.vnode) options.vnode(p);
+
+	return p;
+}