add server to monorepo.

packages/server/src/repositories/BillRepository.ts

@@ -0,0 +1,30 @@
+import moment from 'moment';
+import { Bill } from 'models';
+import TenantRepository from '@/repositories/TenantRepository';
+
+export default class BillRepository extends TenantRepository {
+  /**
+   * Gets the repository's model.
+   */
+  get model() {
+    return Bill.bindKnex(this.knex);
+  }
+
+  dueBills(asDate = moment().format('YYYY-MM-DD'), withRelations) {
+    return this.model
+      .query()
+      .modify('dueBills')
+      .modify('notOverdue')
+      .modify('fromDate', asDate)
+      .withGraphFetched(withRelations);
+  }
+
+  overdueBills(asDate = moment().format('YYYY-MM-DD'), withRelations) {
+    return this.model
+      .query()
+      .modify('dueBills')
+      .modify('overdue', asDate)
+      .modify('fromDate', asDate)
+      .withGraphFetched(withRelations);
+  }
+}