Support fragments via h(null, null, ...args) (#16)

* Test on latest LTS node

* Adds support for fragments

* Bump Travis node versions

* Back out of unnecessary change

* Update .travis.yml

* Update vhtml.js

* Size optimization (-3b)

.travis.yml

@@ -1,3 +1,3 @@
 language: node_js
-node_js:
-  - 4
+node_js: node
+cache: npm

src/vhtml.js

@@ -13,7 +13,7 @@ let sanitized = {};
 
 /** Hyperscript reviver that constructs a sanitized HTML string. */
 export default function h(name, attrs) {
-	let stack=[], s = `<${name}`;
+	let stack=[], s = '';
 	attrs = attrs || {};
 	for (let i=arguments.length; i-- > 2; ) {
 		stack.push(arguments[i]);
@@ -26,12 +26,15 @@ export default function h(name, attrs) {
 		// return name(attrs, stack.reverse());
 	}
 
-	for (let i in attrs) {
-		if (attrs[i]!==false && attrs[i]!=null && i !== setInnerHTMLAttr) {
-			s += ` ${DOMAttributeNames[i] ? DOMAttributeNames[i] : esc(i)}="${esc(attrs[i])}"`;
+	if (name) {
+		s += '<' + name;
+		if (attrs) for (let i in attrs) {
+			if (attrs[i]!==false && attrs[i]!=null && i !== setInnerHTMLAttr) {
+				s += ` ${DOMAttributeNames[i] ? DOMAttributeNames[i] : esc(i)}="${esc(attrs[i])}"`;
+			}
 		}
+		s += '>';
 	}
-	s += '>';
 
 	if (emptyTags.indexOf(name) === -1) {
 		if (attrs[setInnerHTMLAttr]) {
@@ -49,7 +52,7 @@ export default function h(name, attrs) {
 			}
 		}
 
-		s += `</${name}>`;
+		s += name ? `</${name}>` : '';
 	}
 
 	sanitized[s] = true;

test/vhtml.js

@@ -173,4 +173,21 @@ describe('vhtml', () => {
 			'<div class="my-class" for="id"></div>'
 		);
 	});
+
+	it('should support string fragments', () => {
+		expect(
+			h(null, null, "foo", "bar", "baz")
+		).to.equal(
+			'foobarbaz'
+		);
+	});
+
+	it('should support element fragments', () => {
+		expect(
+			h(null, null, <p>foo</p>, <em>bar</em>, <div class="qqqqqq">baz</div>)
+		).to.equal(
+			'<p>foo</p><em>bar</em><div class="qqqqqq">baz</div>'
+		);
+	});
+
 });