Separate stringify from entry

src/stringify.js

@@ -0,0 +1,50 @@
+import emptyTags from './empty-tags';
+
+// escape an attribute
+let esc = str => String(str).replace(/[&<>"']/g, s=>`&${map[s]};`);
+let map = {'&':'amp','<':'lt','>':'gt','"':'quot',"'":'apos'};
+let DOMAttributeNames = {
+	className: 'class',
+	htmlFor: 'for'
+};
+
+let sanitized = {};
+
+export default function stringify(name, attrs, stack) {
+	// Sortof component support!
+	if (typeof name==='function') {
+		attrs.children = stack.reverse();
+		return String(name(attrs));
+	}
+
+	let s = `<${name}`;
+	if (attrs) for (let i in attrs) {
+		if (attrs[i]!==false && attrs[i]!=null) {
+			s += ` ${DOMAttributeNames[i] ? DOMAttributeNames[i] : esc(i)}="${esc(attrs[i])}"`;
+		}
+	}
+
+	if (emptyTags.indexOf(name) === -1) {
+		s += '>';
+
+		while (stack.length) {
+			let child = stack.pop();
+			if (child) {
+				if (child.pop) {
+					for (let i=child.length; i--; ) stack.push(child[i]);
+				}
+				else {
+					let resolved = String(child);
+					s += sanitized[resolved]===true ? resolved : esc(resolved);
+				}
+			}
+		}
+
+		s += `</${name}>`;
+	} else {
+		s += '>';
+	}
+
+	sanitized[s] = true;
+	return s;
+}

src/vhtml.js

@@ -1,14 +1,4 @@
-import emptyTags from './empty-tags';
-
-// escape an attribute
-let esc = str => String(str).replace(/[&<>"']/g, s=>`&${map[s]};`);
-let map = {'&':'amp','<':'lt','>':'gt','"':'quot',"'":'apos'};
-let DOMAttributeNames = {
-	className: 'class',
-	htmlFor: 'for'
-};
-
-let sanitized = {};
+import stringify from './stringify';
 
 /** Hyperscript reviver that constructs a sanitized HTML string. */
 export default function h(name, attrs) {
@@ -17,40 +7,5 @@ export default function h(name, attrs) {
 		stack.push(arguments[i]);
 	}
 
-	// Sortof component support!
-	if (typeof name==='function') {
-		(attrs || (attrs = {})).children = stack.reverse();
-		return name(attrs);
-		// return name(attrs, stack.reverse());
-	}
-
-	let s = `<${name}`;
-	if (attrs) for (let i in attrs) {
-		if (attrs[i]!==false && attrs[i]!=null) {
-			s += ` ${DOMAttributeNames[i] ? DOMAttributeNames[i] : esc(i)}="${esc(attrs[i])}"`;
-		}
-	}
-
-	if (emptyTags.indexOf(name) === -1) {
-		s += '>';
-
-		while (stack.length) {
-			let child = stack.pop();
-			if (child) {
-				if (child.pop) {
-					for (let i=child.length; i--; ) stack.push(child[i]);
-				}
-				else {
-					s += sanitized[child]===true ? child : esc(child);
-				}
-			}
-		}
-
-		s += `</${name}>`;
-	} else {
-		s += '>';
-	}
-
-	sanitized[s] = true;
-	return s;
+	return stringify(name, attrs || {}, stack);
 }