Add the awareness in the shared document interface (#282)

* Add the awareness in the shared document interface

* integrity

Author: brichet

javascript/src/api.ts

@@ -23,6 +23,7 @@ import type {
 import type { IObservableDisposable } from '@lumino/disposable';
 import type { ISignal } from '@lumino/signaling';
 import * as Y from 'yjs';
+import { IAwareness } from './awareness.js';
 
 /**
  * Changes on Sequence-like data are expressed as Quill-inspired deltas.
@@ -96,6 +97,11 @@ interface ISharedDocumentNoSource extends ISharedBase {
    */
   readonly state: JSONObject;
 
+  /**
+   * Document awareness
+   */
+  readonly awareness: IAwareness;
+
   /**
    * Get the value for a state attribute
    *