// Import D3 for data manipulation and visualization
import{select,geoPath,scaleLinear}from"@d3"
// Import topojson for converting TopoJSON to GeoJSON
import{topology,feature}from"topojson-client"
// Import Leaflet for mapping
import{
createascreateMap,
tileLayer,
geoJSONasgeoJsonLayer
}from"leaflet"
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.