update ts definitions

examples/jsm/nodes/core/Node.d.ts

@@ -21,6 +21,7 @@ export class Node {
 	getName( builder: NodeBuilder ): string;
 	getType( builder: NodeBuilder, output?: string ): string;
 	getJSONNode( meta?: object | string ): object | undefined;
+	getHash(): string;
 	copy( source: Node ): this;
 	createJSONNode( meta?: object | string ): object;
 	toJSON( meta?: object | string ): object;

examples/jsm/nodes/materials/NodeMaterial.d.ts

@@ -27,6 +27,7 @@ export class NodeMaterial extends ShaderMaterial {
 
 	updateFrame( frame: NodeFrame ): void;
 	build( params?: NodeMaterialBuildParams ): this;
+	getHash(): string;
 	copy( source: NodeMaterial ): this;
 
 }