chart = {
const svg = d3.select(DOM.svg(width, height));
svg.selectAll("rect")
.data(simpleData)
.enter()
.append("rect")
.attr("x", (d, i) => i * width / data.length)
.attr("y", d => height - (d * 8))
.attr("width", width / data.length - barPadding)
.attr("height", d => d * 8)
.attr("fill", "brown");
return svg.node()
}