examples/index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>maplibre-gl-overview-map</title>
    <script src="https://unpkg.com/maplibre-gl/dist/maplibre-gl.js"></script>
    <script src="https://unpkg.com/maplibre-gl-overview-map@1.0.4/dist/maplibre-gl-overview-map.umd.js"></script>
    <link
      href="https://unpkg.com/maplibre-gl/dist/maplibre-gl.css"
      rel="stylesheet"
    />
    <link
      href="https://unpkg.com/maplibre-gl-overview-map@1.0.4/dist/maplibre-gl-overview-map.css"
      rel="stylesheet"
    />
    <style>
      #map {
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        position: absolute;
        width: 100%;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      let map = new maplibregl.Map({
        container: 'map',
        style: 'https://yuchuntsao.github.io/simple-vector-tiles/style.json',
        center: [0, 0],
        zoom: 4
      })

      map.addControl(new maplibregl.NavigationControl(), 'bottom-right')

      // Default style
      const defaultOverviewMapControl = new OverviewMapControl()
      map.addControl(defaultOverviewMapControl)
    </script>
  </body>
</html>