add server to monorepo.

packages/server/src/models/BillPaymentEntry.ts

@@ -0,0 +1,45 @@
+import { Model } from 'objection';
+import TenantModel from 'models/TenantModel';
+
+export default class BillPaymentEntry extends TenantModel {
+  /**
+   * Table name
+   */
+  static get tableName() {
+    return 'bills_payments_entries';
+  }
+
+  /**
+   * Timestamps columns.
+   */
+  get timestamps() {
+    return [];
+  }
+
+  /**
+   * Relationship mapping.
+   */
+  static get relationMappings() {
+    const Bill = require('models/Bill');
+    const BillPayment = require('models/BillPayment');
+
+    return {
+      payment: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: BillPayment.default,
+        join: {
+          from: 'bills_payments_entries.billPaymentId',
+          to: 'bills_payments.id',
+        },
+      },
+      bill: {
+        relation: Model.BelongsToOneRelation,
+        modelClass: Bill.default,
+        join: {
+          from: 'bills_payments_entries.billId',
+          to: 'bills.id',
+        },
+      },
+    };
+  }
+}