JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://api-maps.yandex.ru/2.1/?lang=ru_RU"></script>
<div id="map" style="width:500px;height:500px"></div>

JavaScript

ymaps.ready(init);

function init() {
    var PointCollection = new ymaps.GeoObjectCollection();
    var PolygonObj = new ymaps.GeoObjectCollection();
    var ObjMap = new ymaps.Map("map", {
        center: [55.43, 37.75],
        zoom: 8
    }, {
        searchControlProvider: 'yandex#search'
    });
    
    var placemark = new ymaps.Placemark([55.5, 37.8], {}, {
        preset: "islands#greenIcon", HomeId: 1
    });
    PointCollection.add(placemark);
    var placemark = new ymaps.Placemark([55.6, 37.8], {}, {
        preset: "islands#greenIcon", HomeId: 2
    });
    PointCollection.add(placemark);
    var placemark = new ymaps.Placemark([55.7, 37.8], {}, {
        preset: "islands#greenIcon", HomeId: 3
    });
    var placemark = new ymaps.Placemark([55.8, 37.8], {}, {
        preset: "islands#greenIcon", HomeId: 4
    });
    PointCollection.add(placemark);
    var placemark = new ymaps.Placemark([55.9, 37.8], {}, {
        preset: "islands#greenIcon", HomeId: 5
    });
    PointCollection.add(placemark);
   
    ObjMap.geoObjects.add(PointCollection);
        
    areaAddBtn = new ymaps.control.Button({
        data: {content: 'Добавить область'},
        options: {maxWidth: 160, float: 'left', selectOnClick: true}
    });

    areaAddBtn.events.add('select', function () {
        newPolygon = new ymaps.Polygon([], {}, {
            editorDrawingCursor: "crosshair",
            editorMaxPoints: 100,
            fillColor: '#00FF0000',
            strokeColor: '#FF0000',
            draggable : true,
            strokeWidth: 3
        });  
                
        PolygonObj.add(newPolygon);
        ObjMap.geoObjects.add(newPolygon);
        newPolygon.editor.startDrawing();
        
        newPolygon.editor.events.add("vertexadd", function (event) {
            obj = ymaps.geoQuery(PointCollection, newPolygon);
            //console.log(newPolygon.geometry.get(0));
            var objectsInsideCircle = obj.searchInside(newPolygon);
           ...