diff --git a/types/leaflet.markercluster.layersupport/index.d.ts b/types/leaflet.markercluster.layersupport/index.d.ts
new file mode 100644
index 0000000000..aec703c67f
--- /dev/null
+++ b/types/leaflet.markercluster.layersupport/index.d.ts
@@ -0,0 +1,33 @@
+// Type definitions for Leaflet.MarkerCluster.LayerSupport 1.0
+// Project: https://github.com/ghybs/Leaflet.MarkerCluster.LayerSupport
+// Definitions by: AsamK <https://github.com/AsamK>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+import * as Leaflet from "leaflet";
+import * as MakerCluster from "leaflet.markercluster";
+
+export = Leaflet;
+
+declare global { namespace L {
+    namespace MarkerClusterGroup {
+        interface LayerSupport extends MarkerClusterGroup {
+            /**
+             * Stamps the passed layers as being part of this group, but without adding
+             * them to the map right now.
+             */
+            checkIn(layers: Layer | Layer[]): this;
+
+            /**
+             * Un-stamps the passed layers from being part of this group. It has to
+             * remove them from map (if they are) since they will no longer cluster.
+             */
+            checkOut(layers: Layer | Layer[]): this;
+        }
+    }
+    namespace markerClusterGroup {
+        /**
+         * Create a layer support marker cluster group, optionally given marker cluster group options.
+         */
+        function layerSupport(options?: MarkerClusterGroupOptions): MarkerClusterGroup.LayerSupport;
+    }
+} }
diff --git a/types/leaflet.markercluster.layersupport/leaflet.markercluster.layersupport-tests.ts b/types/leaflet.markercluster.layersupport/leaflet.markercluster.layersupport-tests.ts
new file mode 100644
index 0000000000..1c9682bd77
--- /dev/null
+++ b/types/leaflet.markercluster.layersupport/leaflet.markercluster.layersupport-tests.ts
@@ -0,0 +1,88 @@
+import L = require("leaflet.markercluster.layersupport");
+
+const polylineOptions: L.PolylineOptions = {};
+const icon: L.Icon = L.icon({ iconUrl: 'foo' });
+
+let markerClusterGroupOptions: L.MarkerClusterGroupOptions = {};
+markerClusterGroupOptions = {
+    showCoverageOnHover: true,
+    zoomToBoundsOnClick: false,
+    spiderfyOnMaxZoom: true,
+    removeOutsideVisibleBounds: false,
+    animate: true,
+    animateAddingMarkers: false,
+    disableClusteringAtZoom: 12,
+    maxClusterRadius: 40,
+    polygonOptions: polylineOptions,
+    singleMarkerMode: true,
+    spiderLegPolylineOptions: polylineOptions,
+    spiderfyDistanceMultiplier: 2,
+    iconCreateFunction: (cluster: L.MarkerCluster) => {
+        const childMarkers: L.Marker[] = cluster.getAllChildMarkers();
+        const childCount: number = cluster.getChildCount();
+        cluster.zoomToBounds();
+        const bounds: L.LatLngBounds = cluster.getBounds();
+        return icon;
+    },
+    chunkedLoading: false,
+    chunkDelay: 100
+};
+
+markerClusterGroupOptions.iconCreateFunction = (cluster: L.MarkerCluster) => {
+    return L.divIcon();
+};
+
+let mcgLayerSupportGroup: L.MarkerClusterGroup.LayerSupport;
+mcgLayerSupportGroup = L.markerClusterGroup.layerSupport();
+mcgLayerSupportGroup = L.markerClusterGroup.layerSupport(markerClusterGroupOptions);
+
+let map = L.map('foo');
+
+mcgLayerSupportGroup = mcgLayerSupportGroup.addTo(map);
+map = map
+    .addLayer(mcgLayerSupportGroup)
+    .removeLayer(mcgLayerSupportGroup);
+
+const latLng: L.LatLng = L.latLng(10, 10);
+
+const layer: L.Layer = L.marker(latLng);
+const layers: L.Layer[] = [layer];
+
+let marker: L.Marker = L.marker(latLng);
+let markers: L.Marker[] = [marker];
+
+const layerGroup: L.LayerGroup = L.layerGroup(layers);
+
+layerGroup.addTo(map);
+
+marker = mcgLayerSupportGroup.getVisibleParent(marker);
+
+mcgLayerSupportGroup = mcgLayerSupportGroup
+    // Sub layers
+    .checkIn(layerGroup)
+    .checkOut(layerGroup)
+    // Layers
+    .addLayer(layer)
+    .removeLayer(layer)
+    .addLayers(layers)
+    .removeLayers(layers)
+    .clearLayers()
+    // RefreshClusters
+    .refreshClusters()
+    .refreshClusters(layerGroup)
+    .refreshClusters(marker)
+    .refreshClusters(markers)
+    .refreshClusters(mcgLayerSupportGroup)
+    .refreshClusters({ id_any: layer });
+
+const childCount: number = mcgLayerSupportGroup.getChildCount();
+
+markers = mcgLayerSupportGroup.getAllChildMarkers();
+
+mcgLayerSupportGroup.zoomToShowLayer(marker);
+mcgLayerSupportGroup.zoomToShowLayer(marker, () => {});
+
+let hasLayer: boolean;
+hasLayer = mcgLayerSupportGroup.hasLayer(layer);
+hasLayer = mcgLayerSupportGroup.hasLayer(marker);
+hasLayer = mcgLayerSupportGroup.hasLayer(layerGroup);
diff --git a/types/leaflet.markercluster.layersupport/tsconfig.json b/types/leaflet.markercluster.layersupport/tsconfig.json
new file mode 100644
index 0000000000..4e82ec1409
--- /dev/null
+++ b/types/leaflet.markercluster.layersupport/tsconfig.json
@@ -0,0 +1,23 @@
+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6",
+            "dom"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "leaflet.markercluster.layersupport-tests.ts"
+    ]
+}
diff --git a/types/leaflet.markercluster.layersupport/tslint.json b/types/leaflet.markercluster.layersupport/tslint.json
new file mode 100644
index 0000000000..3db14f85ea
--- /dev/null
+++ b/types/leaflet.markercluster.layersupport/tslint.json
@@ -0,0 +1 @@
+{ "extends": "dtslint/dt.json" }