component.js in lookbook-2.0.2

- old
+ new

@@ -34,9 +34,21 @@
     },
 
     onResized({ height }) {
       if (height) {
         this.viewportHeight = height;
+
+        // Notify parent window of height resize so the parent window can implement
+        // its own iframe resize strategy if not using the Lookbook JS script.
+        // Uses Embedly-compatible postMessage format: https://docs.embed.ly/reference/provider-height-resizing
+        window.parent.postMessage(
+          JSON.stringify({
+            src: window.location.toString(),
+            context: "iframe.resize",
+            height,
+          }),
+          "*"
+        );
       }
     },
 
     resizeIframe() {
       this.iframe.iFrameResizer.resize();