Merge branch 'master' of github.com:konvajs/konva

src/BaseLayer.ts

@@ -249,13 +249,13 @@ export abstract class BaseLayer extends Container {
    * @return {Konva.Layer} this
    */
   batchDraw() {
-    if (this._waitingForDraw) {
-      return;
+    if (!this._waitingForDraw) {
+      this._waitingForDraw = true;
+      Util.requestAnimFrame(() => {
+        this.draw();
+        this._waitingForDraw = false;
+      });
     }
-    Util.requestAnimFrame(() => {
-      this._waitingForDraw = false;
-      this.draw();
-    });
     return this;
   }
 

src/Container.ts

@@ -66,7 +66,7 @@ export abstract class Container extends Node {
     for (var i = 0; i < children.length; i++) {
       child = children[i];
       // reset parent to prevent many _setChildrenIndices calls
-      delete child.parent;
+      child.parent = null;
       child.index = 0;
       child.remove();
     }
@@ -85,7 +85,7 @@ export abstract class Container extends Node {
     for (var i = 0; i < children.length; i++) {
       child = children[i];
       // reset parent to prevent many _setChildrenIndices calls
-      delete child.parent;
+      child.parent = null;
       child.index = 0;
       child.destroy();
     }

src/Node.ts

@@ -719,7 +719,7 @@ export abstract class Node {
     if (parent && parent.children) {
       parent.children.splice(this.index, 1);
       parent._setChildrenIndices();
-      delete this.parent;
+      this.parent = null;
     }
 
     // every cached attr that is calculated via node tree

src/Util.ts

@@ -542,20 +542,16 @@ export const Util = {
       return -1;
     }
   },
-  _waiting: false,
   animQueue: [],
   requestAnimFrame(callback) {
     Util.animQueue.push(callback);
-    if (Util._waiting) {
-      return;
-    }
-    requestAnimationFrame(() => {
-      Util.animQueue.forEach(cb => {
-        cb();
+    if (Util.animQueue.length === 1) {
+      requestAnimationFrame(function () {
+        const queue = Util.animQueue;
+        Util.animQueue = [];
+        queue.forEach(function (cb) { cb(); });
       });
-      Util.animQueue = [];
-      Util._waiting = false;
-    });
+    }
   },
   createCanvasElement() {
     var canvas = isBrowser