treemap = data => cascade(
d3.treemap()
.size([treemapDims.width, treemapDims.height])
.paddingTop(treemapDims.paddingTop)
.paddingInner(0)
.round(true)
.tile(d3.treemapResquarify)
(d3.hierarchy(data)
.sum(d => d.value)
.sort((a, b) => b.height - a.height)),
offset
)