feat(core): create DOMInsertionService

npm/ng-packs/packages/core/src/lib/services/dom-insertion.service.ts

@@ -0,0 +1,17 @@
+import { Injectable } from '@angular/core';
+import { ContentStrategy } from '../strategies/content.strategy';
+import { generateHash } from '../utils';
+
+@Injectable({ providedIn: 'root' })
+export class DOMInsertionService {
+  readonly inserted = new Set();
+
+  insertElement(contentStrategy: ContentStrategy) {
+    const hash = generateHash(contentStrategy.content);
+
+    if (this.inserted.has(hash)) return;
+
+    contentStrategy.insertElement();
+    this.inserted.add(hash);
+  }
+}

npm/ng-packs/packages/core/src/lib/services/index.ts

@@ -1,6 +1,7 @@
 export * from './application-configuration.service';
 export * from './auth.service';
 export * from './config-state.service';
+export * from './dom-insertion.service';
 export * from './lazy-load.service';
 export * from './localization.service';
 export * from './profile-state.service';