Release Artifacts for v2.2.10

 [skip ci]

README.md

@@ -15,7 +15,7 @@
 
 ## What is Mithril.js?
 
-A modern client-side JavaScript framework for building Single Page Applications. It's small (<!-- size -->9.05 KB<!-- /size --> gzipped), fast and provides routing and XHR utilities out of the box.
+A modern client-side JavaScript framework for building Single Page Applications. It's small (<!-- size -->9.02 KB<!-- /size --> gzipped), fast and provides routing and XHR utilities out of the box.
 
 Mithril.js is used by companies like Vimeo and Nike, and open source platforms like Lichess 👍.
 

docs/recent-changes.md

@@ -1,4 +1,12 @@
 
+# Release v2.2.10
+
+### Patch Changes
+
+#### [[refactor] Performance improvement of updateStyle() (@kfule)](https://github.com/MithrilJS/mithril.js/pull/2985)
+
+This is a refactoring to improve the performance of `updateStyle()`.
+
 # Release v2.2.9
 
 ### Patch Changes

mithril.js

@@ -922,13 +922,6 @@ var _11 = function() {
 		) && key in vnode3.dom
 	}
 	//style
-	var uppercaseRegex = /[A-Z]/g
-	function toLowerCase(capital) { return "-" + capital.toLowerCase() }
-	function normalizeKey(key) {
-		return key[0] === "-" && key[1] === "-" ? key :
-			key === "cssFloat" ? "float" :
-				key.replace(uppercaseRegex, toLowerCase)
-	}
 	function updateStyle(element, old, style) {
 		if (old === style) {
 			// Styles are equivalent, do nothing.
@@ -944,21 +937,26 @@ var _11 = function() {
 			// Add new style properties
 			for (var key in style) {
 				var value = style[key]
-				if (value != null) element.style.setProperty(normalizeKey(key), String(value))
+				if (value != null) {
+					if (key[0] === "-" && key[1] === "-") element.style.setProperty(key, String(value))
+					else element.style[key] = String(value)
+				}
 			}
 		} else {
 			// Both old & new are (different) objects.
 			// Update style properties that have changed
 			for (var key in style) {
 				var value = style[key]
 				if (value != null && (value = String(value)) !== String(old[key])) {
-					element.style.setProperty(normalizeKey(key), value)
+					if (key[0] === "-" && key[1] === "-") element.style.setProperty(key, value)
+					else element.style[key] = value
 				}
 			}
 			// Remove style properties that no longer exist
 			for (var key in old) {
 				if (old[key] != null && style[key] == null) {
-					element.style.removeProperty(normalizeKey(key))
+					if (key[0] === "-" && key[1] === "-") element.style.removeProperty(key)
+					else element.style[key] = ""
 				}
 			}
 		}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mithril",
-  "version": "2.2.9",
+  "version": "2.2.10",
   "description": "A framework for building brilliant applications",
   "author": "Leo Horie",
   "license": "MIT",