Display map labels in a language that reads right-to-left, such as Arabic or Hebrew. This sample relies on the Esri Leaflet Vector plugin to display a basemap, and the Mapbox GL RTL Text plugin to configure RTL language settings.
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
    <title>Esri Leaflet Samples: Display a RTL place label language</title>
    <!-- Load Leaflet from CDN -->
    <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@3.0.19/dist/esri-leaflet.js"></script>
    <script src="https://unpkg.com/esri-leaflet-vector@4.3.2/dist/esri-leaflet-vector.js"></script>
    <style>
      body {
        margin: 0;
        padding: 0;
      }
      #map {
        position: absolute;
        top: 0;
        bottom: 0;
        right: 0;
        left: 0;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 14px;
        color: #323232;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>
      const map = L.map("map", {
        minZoom: 2
      }).setView([25.190, 55.317], 4);
      const accessToken = "YOUR_ACCESS_TOKEN";
      L.esri.Vector.vectorBasemapLayer("arcgis/outdoor", {
        token: accessToken,
        language: "ar" // Arabic
      }).addTo(map);
      L.esri.Vector.setRTLTextPlugin("https://unpkg.com/@mapbox/mapbox-gl-rtl-text@0.2.3/mapbox-gl-rtl-text.js");
    </script>
  </body>
</html>