reorganize files

web/static/libs/snabbdom/src/modules/class.ts

@@ -0,0 +1,30 @@
+import {VNode, VNodeData} from '../vnode';
+import {Module} from './module';
+
+export type Classes = Record<string, boolean>
+
+function updateClass(oldVnode: VNode, vnode: VNode): void {
+  var cur: any, name: string, elm: Element = vnode.elm as Element,
+      oldClass = (oldVnode.data as VNodeData).class,
+      klass = (vnode.data as VNodeData).class;
+
+  if (!oldClass && !klass) return;
+  if (oldClass === klass) return;
+  oldClass = oldClass || {};
+  klass = klass || {};
+
+  for (name in oldClass) {
+    if (!klass[name]) {
+      elm.classList.remove(name);
+    }
+  }
+  for (name in klass) {
+    cur = klass[name];
+    if (cur !== oldClass[name]) {
+      (elm.classList as any)[cur ? 'add' : 'remove'](name);
+    }
+  }
+}
+
+export const classModule = {create: updateClass, update: updateClass} as Module;
+export default classModule;