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third_party/polymer/components/neon-animation/animations/slide-from-right-animation.html

 <!--
 @license
 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 
@@ skipping 23 matching lines @@
 
     is: 'slide-from-right-animation',
 
     behaviors: [
       Polymer.NeonAnimationBehavior
     ],
 
     configure: function(config) {
       var node = config.node;
 
+      this._effect = new KeyframeEffect(node, [
+        {'transform': 'translateX(100%)'},
+        {'transform': 'none'}
+      ], this.timingFromConfig(config));
+
       if (config.transformOrigin) {
         this.setPrefixedProperty(node, 'transformOrigin', config.transformOrigin);
       } else {
         this.setPrefixedProperty(node, 'transformOrigin', '0 50%');
       }
 
-      this._effect = new KeyframeEffect(node, [
-        {'transform': 'translateX(100%)'},
-        {'transform': 'none'}
-      ], this.timingFromConfig(config));
-
       return this._effect;
     }
 
   });
 
 </script>