<html>

<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no" />
  <title>ArcGIS JSAPI ESM Template</title>

  <link rel="stylesheet" href="https://js.arcgis.com/4.20/esri/themes/light/main.css" />
</head>

<body>
  <div id="viewDiv"></div>
</body>

</html>
html,
body {
	height: 100%;
	width: 100%;
	margin: 0;
	padding: 0;
}

#viewDiv {
	height: 100%;
	width: 100%;
}
import config from "https://js.arcgis.com/next/@arcgis/core/config.js";
import ArcGISMap from "https://js.arcgis.com/next/@arcgis/core/Map.js";
import MapView from "https://js.arcgis.com/next/@arcgis/core/views/MapView.js";
import GeoJSONLayer from "https://js.arcgis.com/next/@arcgis/core/layers/GeoJSONLayer.js";

config.request.interceptors.push({
	urls: 'https://earthquake.usgs.gov',
	after(response) {
		const geojson = response.data;
		geojson.features = geojson.features.splice(1, 500);
		response.data = geojson;
		return response;
	}
});

const layer = new GeoJSONLayer({
	url: `https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_month.geojson`,
	id: "buildingPoints",
	title: "Indoor Maps Locations",
	displayField: "siteName",
	renderer: {
		type: "simple",
		symbol: {
			type: "simple-marker",
			style: "square",
			color: "blue",
			size: "8px"
		}
	},
	geometryType: "point"
});

const map = new ArcGISMap({
	basemap: "gray-vector",
	layers: [layer]
});

const view = new MapView({
	container: "viewDiv",
	map,
	center: [-118, 34],
	zoom: 4
});

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.