chart = {
const width = 960;
const height = 600;
const geoGenerator = d3.geoPath()
.projection(projection);
const svg = d3.select(DOM.svg(width, height))
projection.fitExtent([[20, 20], [960, 600]], melbourne);
svg.append('g').selectAll('path')
.data(melbourne.features)
.enter()
.append('path')
.attr('d', geoGenerator)
return svg.node()
}