Update your handleResize method to emit the width and height

```
handleResize(event) {
this.$emit('resize', event)
if (this.ready) this.updateVisibleItems(false)
},
```

If we replace your handleResize method inside RecycleScroller.vue with the above one it will start emitting the width and height of the root container, kindly do this update as I am also looking to get the sizes of the container as it changes