Reduce minimum three version

build/nodes/MapNode.d.ts

@@ -22,7 +22,7 @@ export declare abstract class MapNode extends Mesh {
     static baseGeometry: BufferGeometry;
     static baseScale: Vector3;
     static childrens: number;
-    isMesh: boolean;
+    isMesh: true;
     constructor(parentNode?: MapNode, mapView?: MapView, location?: number, level?: number, x?: number, y?: number, geometry?: BufferGeometry, material?: Material);
     initialize(): Promise<void>;
     createChildNodes(): void;

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "geo-three",
-	"version": "0.1.8",
+	"version": "0.1.9",
 	"type": "module",
 	"description": "geo-three is library for tile based geographic map layers in with three.js supporting selective loading/unloading of real-time generated 3D tiles",
 	"main": "build/Main.d.ts",
@@ -38,7 +38,7 @@
 	"author": "Tentone",
 	"license": "MIT",
 	"peerDependencies": {
-		"three": "^0.147.0"
+		"three": "^0.120.0"
 	},
 	"devDependencies": {
 		"@rollup/plugin-strip": "~2.1.0",

source/nodes/MapNode.ts

@@ -142,7 +142,7 @@ export abstract class MapNode extends Mesh
 	 * Used to toggle the visibility of the node. The renderer skips the node rendering if this is set false.
 	 */
 	// @ts-ignore
-	public isMesh: boolean = true;
+	public isMesh: true = true;
 
 	public constructor(parentNode: MapNode = null, mapView: MapView = null, location: number = QuadTreePosition.root, level: number = 0, x: number = 0, y: number = 0, geometry: BufferGeometry = null, material: Material = null) 
 	{
@@ -189,6 +189,7 @@ export abstract class MapNode extends Mesh
 
 		if (this.mapView.cacheTiles && this.childrenCache !== null) 
 		{
+			// @ts-ignore
 			this.isMesh = false;
 			this.children = this.childrenCache;
 			this.nodesLoaded = this.childrenCache.length;
@@ -311,6 +312,7 @@ export abstract class MapNode extends Mesh
 			{
 				if (this.parentNode.subdivided === true) 
 				{
+					// @ts-ignore
 					this.parentNode.isMesh = false;
 				}