fix(core): update

ts/domtools.classes.domtools.ts

@@ -31,7 +31,15 @@ export class DomTools {
   }
 
   public smartstate = new plugins.smartstate.Smartstate();
-  public domToolsStatePart = this.smartstate.getStatePart<IDomToolsState>('domtools');
+  public domToolsStatePart = this.smartstate.getStatePart<IDomToolsState>('domtools', {
+    virtualViewport: 'native'
+  });
+
+  public actionSetVirtualViewport = this.domToolsStatePart.createAction<TViewport>(async (statePart, payload) => {
+    const currentState = statePart.getState();
+    currentState.virtualViewport = payload;
+    return currentState;
+  });
 
   public domToolsReady = plugins.smartpromise.defer();
   public domReady = plugins.smartpromise.defer();
@@ -46,7 +54,9 @@ export class DomTools {
     bodyElement: null
   };
 
-  constructor() {}
+  constructor() {
+    
+  }
 
   public async setGlobalStyles(stylesText: string) {
     await this.domReady.promise;
@@ -82,5 +92,7 @@ export class DomTools {
     );
   }
 
-  setVirtualViewport() {}
+  setVirtualViewport(environmentArg: TViewport) {
+    this.domToolsStatePart.dispatchAction(this.actionSetVirtualViewport, environmentArg);
+  }
 }