JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://maps.googleapis.com/maps/api/js"></script>

<body>
    <div id="googleMap" style="width:500px;height:380px;"></div>
</body>

JavaScript

var mapProp = {
        center: new google.maps.LatLng(23.075984, 78.877656),
        zoom: 5,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("googleMap"), mapProp);


    var geojson = {
        "type": "FeatureCollection",
        "features": [{
            "type": "Feature",
            "geometry": {
                "type": "Polygon",
                "coordinates": [
                    [
                        [0, 90],
                        [180, 90],
                        [180, -90],
                        [0, -90],
                        [-180, -90],
                        [-180, 0],
                        [-180, 90],
                        [0, 90]
                    ],
                    [
                        [79.56298828125, 25.18505888358067],
                        [76.53076171875, 21.37124437061832],
                        [83.38623046875, 21.24842223562701],
                        [79.56298828125, 25.18505888358067]
                    ]
                ]
            },
            "properties": {}
        }]
    };

    map.data.addGeoJson(geojson);