Display a feature layer snapshot

You can load a "snapshot" of a feature layer by querying the feature service and fitting the results of the query within a pre-defined boundary.
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<html>
  <head>
    <meta charset="utf-8" />
    <title>Display a feature layer snapshot</title>
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>
    <!-- Load Esri Leaflet from CDN -->
    <script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"></script>
    <!-- Load Esri Leaflet Vector from CDN -->
    <script src="https://unpkg.com/esri-leaflet-vector@4.2.5/dist/esri-leaflet-vector.js" crossorigin=""></script>
    <style>
      html,
      body,
      #map {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 14px;
        color: #323232;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      const accessToken = "YOUR_ACCESS_TOKEN";

      const map = L.map("map").setView([41.004, -77.618], 7);

      L.esri.Vector.vectorBasemapLayer("arcgis/colored-pencil", {
        token: accessToken
      }).addTo(map);

      const statesUrl = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/2";
      const citiesUrl = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/0";

      // query a feature service for a state
      L.esri
        .query({
          url: statesUrl
        })
        .where("state_name='Pennsylvania'")
        .run(function (error, states) {
          if (error) {
            return;
          }

          // draw state on the map
          const pennsylvania = L.geoJSON(states).addTo(map);

          // fit map to boundary
          map.fitBounds(pennsylvania.getBounds());

          // query all cities with a population greater than 30,000 (pop2000 > 30000) inside our boundary
          L.esri
            .query({
              url: citiesUrl
            })
            .where("pop2000 > 30000")
            .within(pennsylvania)
            .run(function (error, cities) {
              if (error) {
                return;
              }

              L.geoJSON(cities).addTo(map);
            });
        });
    </script>
  </body>
</html>