Modify components to use behaviour subject.

src/app/shared/shared.module.ts

@@ -7,6 +7,7 @@ import { MenuSelectionDirective } from './_directives/menu-selection.directive';
 import { MenuToggleDirective } from './_directives/menu-toggle.directive';
 import {RouterModule} from '@angular/router';
 import {MatIconModule} from '@angular/material/icon';
+import {TokenRatioPipe} from './_pipes/token-ratio.pipe';
 
 
 
@@ -16,13 +17,15 @@ import {MatIconModule} from '@angular/material/icon';
     FooterComponent,
     SidebarComponent,
     MenuSelectionDirective,
-    MenuToggleDirective
+    MenuToggleDirective,
+    TokenRatioPipe
   ],
   exports: [
     TopbarComponent,
     FooterComponent,
     SidebarComponent,
-    MenuSelectionDirective
+    MenuSelectionDirective,
+    TokenRatioPipe
   ],
     imports: [
         CommonModule,