pinafore/routes/_components/VirtualListItem.html

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<div class="virtual-list-item"
ref:node
style="transform: translate3d(0, {{itemOffset}}px, 0);"
data-virtual-index="{{index}}"
data-virtual-key="{{key}}"
>
<:Component {component} virtualProps="{{props}}" />
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</div>
<style>
.virtual-list-item {
position: absolute;
top: 0;
will-change: transform;
}
</style>
<script>
import { virtualListStore } from '../_utils/virtualListStore'
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export default {
oncreate() {
let itemHeights = this.store.get('itemHeights')
itemHeights[this.get('key')] = this.refs.node.offsetHeight
this.store.set({itemHeights: itemHeights})
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},
computed: {
itemOffset: ($itemOffsets, key) => {
return $itemOffsets[key] || 0
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}
},
store: () => virtualListStore
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}
</script>