Aruba is 180 km² — invisible at Natural Earth's standard resolutions. With filter=Aruba and detail=high, the API automatically serves a high-resolution country file sourced from DIVA-GIS rather than the global 10m dataset. The projection auto-fits to the returned geometry using fitExtent.
https://api.mapjson.com/v1/geo?layer=countries&filter=Aruba&detail=high
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/topojson-client@3/dist/topojson-client.min.js"></script>
<style>
svg { width: 100%; display: block; background: #7ab4cc; }
</style>
</head>
<body>
<div id="map"></div>
<script>
const width = 960, height = 560;
const svg = d3.select("#map").append("svg").attr("viewBox", `0 0 ${width} ${height}`);
const url = "https://api.mapjson.com/v1/geo?layer=countries&filter=Aruba&detail=high";
d3.json(url).then(topo => {
const country = topojson.feature(topo, topo.objects.geo);
const projection = d3.geoMercator()
.fitExtent([[80, 60], [width - 80, height - 60]], country);
const path = d3.geoPath().projection(projection);
svg.append("g")
.selectAll("path")
.data(country.features)
.join("path")
.attr("d", path)
.attr("fill", "#d9d0be")
.attr("stroke", "#fff")
.attr("stroke-width", 1);
});
</script>
</body>
</html>