feat(nbstore): add indexer storage (#10953)

packages/common/nbstore/src/frontend/index.ts

@@ -1,3 +1,4 @@
 export * from './awareness';
 export * from './blob';
 export * from './doc';
+export * from './indexer';

packages/common/nbstore/src/frontend/indexer.ts

@@ -0,0 +1,45 @@
+import type { IndexerStorage } from '../storage';
+import type { IndexerSync } from '../sync/indexer';
+
+export class IndexerFrontend {
+  constructor(
+    public readonly storage: IndexerStorage,
+    public readonly sync: IndexerSync
+  ) {}
+
+  get state$() {
+    return this.sync.state$;
+  }
+
+  docState$(docId: string) {
+    return this.sync.docState$(docId);
+  }
+
+  search = this.storage.search.bind(this.storage);
+  aggregate = this.storage.aggregate.bind(this.storage);
+  // eslint-disable-next-line rxjs/finnish
+  search$ = this.storage.search$.bind(this.storage);
+  // eslint-disable-next-line rxjs/finnish
+  aggregate$ = this.storage.aggregate$.bind(this.storage);
+
+  addPriority(docId: string, priority: number) {
+    return this.sync.addPriority(docId, priority);
+  }
+
+  waitForCompleted(signal?: AbortSignal) {
+    return this.sync.waitForCompleted(signal);
+  }
+
+  waitForDocCompleted(docId: string, signal?: AbortSignal) {
+    return this.sync.waitForDocCompleted(docId, signal);
+  }
+
+  waitForDocCompletedWithPriority(
+    docId: string,
+    priority: number,
+    signal?: AbortSignal
+  ) {
+    const undo = this.addPriority(docId, priority);
+    return this.sync.waitForDocCompleted(docId, signal).finally(() => undo());
+  }
+}