feat: add snjs package

packages/snjs/lib/Migrations/Versions/2_7_0.ts

@@ -0,0 +1,32 @@
+import { CompoundPredicate, Predicate, SNComponent } from '@standardnotes/models'
+import { Migration } from '@Lib/Migrations/Migration'
+import { ContentType } from '@standardnotes/common'
+import { ApplicationStage } from '@standardnotes/services'
+
+export class Migration2_7_0 extends Migration {
+  static override version(): string {
+    return '2.7.0'
+  }
+
+  protected registerStageHandlers(): void {
+    this.registerStageHandler(ApplicationStage.FullSyncCompleted_13, async () => {
+      await this.deleteBatchManagerSingleton()
+      this.markDone()
+    })
+  }
+
+  private async deleteBatchManagerSingleton() {
+    const batchMgrId = 'org.standardnotes.batch-manager'
+
+    const batchMgrPred = new CompoundPredicate('and', [
+      new Predicate<SNComponent>('content_type', '=', ContentType.Component),
+      new Predicate<SNComponent>('identifier', '=', batchMgrId),
+    ])
+
+    const batchMgrSingleton = this.services.singletonManager.findSingleton(ContentType.Component, batchMgrPred)
+
+    if (batchMgrSingleton) {
+      await this.services.itemManager.setItemToBeDeleted(batchMgrSingleton)
+    }
+  }
+}