commit 413c7a5991b0cfc092e736542943085c03c187fe · knotbin.com/nozzle

.vscode/settings.json

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PRODUCTION_READINESS_ASSESSMENT.md

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        ## ❌ Critical Missing Features for Production

     

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        ### 1. **Transactions** 🔴 CRITICAL

     

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        **Status:** Not implemented

     

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       -
        

     

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        **Impact:** Cannot perform multi-document atomic operations

     

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       -
        

     

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        **Mongoose Equivalent:**

     

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        ```javascript

     

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        const session = await mongoose.startSession();

     

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        session.startTransaction();

     

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        try {

     

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          await UserModel.updateOne({...}, {...}, { session });

     

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          await OrderModel.create([...], { session });

     

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          await session.commitTransaction();

     

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        } catch (error) {

     

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          await session.abortTransaction();

     

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        }

     

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        ```

     

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       -
        

     

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        **Required for:**

     

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        - Financial operations

     

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        - Multi-collection updates

     

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        - Data consistency guarantees

     

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        - Rollback capabilities

     

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       ### 1. **Transactions** ✅ IMPLEMENTED

     

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       **Status:** ✅ **FULLY IMPLEMENTED** - Complete transaction support with MongoDB driver

     

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       **Current Features:**

     

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       - ✅ `withTransaction()` helper for automatic transaction management

     

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       - ✅ `startSession()` and `endSession()` for manual session management

     

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       - ✅ All Model methods accept `session` option

     

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       - ✅ Automatic commit on success, abort on error

     

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       - ✅ Support for TransactionOptions (read/write concern, etc.)

     

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       - ✅ Clean API matching MongoDB best practices

     

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       - ✅ Comprehensive documentation and examples

     

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       **Nozzle API:**

     

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       ```typescript

     

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       // Automatic transaction management

     

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       const result = await withTransaction(async (session) => {

     

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         await UserModel.insertOne({ name: "Alice" }, { session });

     

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         await OrderModel.insertOne({ userId: "123" }, { session });

     

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         return { success: true };

     

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       });

     

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       +
       

     

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       // Manual session management

     

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       const session = startSession();

     

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       try {

     

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         await session.withTransaction(async () => {

     

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           await UserModel.updateOne({...}, {...}, { session });

     

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         });

     

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       } finally {

     

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         await endSession(session);

     

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       }

     

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       ```

     

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       **Supported Operations:**

     

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       - ✅ Insert (insertOne, insertMany)

     

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       - ✅ Find (find, findOne, findById)

     

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       - ✅ Update (update, updateOne, replaceOne)

     

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       - ✅ Delete (delete, deleteOne)

     

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       - ✅ Aggregate

     

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       - ✅ Count

     

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       **Requirements:**

     

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       - Requires MongoDB 4.0+ with Replica Set or MongoDB 4.2+ with Sharded Cluster

     

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       - All operations must pass the session parameter

     

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        ---

     

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        | Basic CRUD | ✅ | ✅ | ✅ |

     

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        | Type Safety | ✅✅ | ✅ | ✅ |

     

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        | Schema Validation | ✅ | ✅✅ | ✅ |

     

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        | Transactions | ❌ | ✅ | 🔴 |

     

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        | Transactions | ✅ | ✅ | 🔴 |

     

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        | Middleware/Hooks | ❌ | ✅ | 🔴 |

     

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        | Index Management | ✅ | ✅ | 🟡 |

     

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        | Update Validation | ✅ | ✅ | 🟡 |

     
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        If you want to make Nozzle production-ready:

     

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       **Phase 1: Critical (Must Have)**

     

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       1. ❌ Implement transactions

     

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       **Phase 1: Critical (Must Have)** ✅ **ALL COMPLETED**

     

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       1. ✅ **COMPLETED** - Implement transactions

     

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       2. ✅ **COMPLETED** - Add connection retry logic

     

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       3. ✅ **COMPLETED** - Improve error handling

     

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       4. ✅ **COMPLETED** - Add update validation

     
···

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       | Type Safety | 9/10 | 15% | 1.35 |

     

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       | Error Handling | 8/10 | 15% | 1.2 |

     

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       | Connection Management | 7/10 | 15% | 1.05 |

     

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       | Advanced Features | 2/10 | 20% | 0.4 |

     

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       | Advanced Features | 5/10 | 20% | 1.0 |

     

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       | Testing & Docs | 7/10 | 10% | 0.7 |

     

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       | Production Features | 5/10 | 5% | 0.25 |

     

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       **Overall Score: 6.55/10** (Significantly Improved - Approaching Production Ready)

     

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       **Overall Score: 7.15/10** (Production Ready for Most Use Cases)

     

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        **Mongoose Equivalent Score: ~8.5/10**

     

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···

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       ## 🆕 Recent Improvements

     

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       1. ✅ **Structured Error Handling Implemented** (errors.ts)

     

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       1. ✅ **Transaction Support Implemented** (client.ts, model.ts)

     

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          - `withTransaction()` helper for automatic transaction management

     

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          - `startSession()` and `endSession()` for manual control

     

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          - All Model methods accept session options

     

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          - Automatic commit/abort handling

     

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          - Support for TransactionOptions

     

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          - Clean API matching MongoDB best practices

     

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          - Comprehensive documentation with examples

     

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          - Works with MongoDB 4.0+ replica sets and 4.2+ sharded clusters

     

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       2. ✅ **Structured Error Handling Implemented** (errors.ts)

     

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          - Custom error class hierarchy with `NozzleError` base class

     

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          - `ValidationError` with Zod issue integration and field grouping

     

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          - `ConnectionError` with URI context

     
···

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        ## 📋 Changelog

     

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       ### Version 0.4.0 (Latest)

     

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       ### Version 0.5.0 (Latest)

     

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       - ✅ **TRANSACTIONS IMPLEMENTED** - Full transaction support

     

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       - ✅ `withTransaction()` helper for automatic transaction management

     

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       - ✅ All Model methods accept session options

     

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       - ✅ Automatic commit/abort handling

     

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       - ✅ Phase 1 Critical Features: **ALL COMPLETED** 🎉

     

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       - Updated scores (7.15/10, up from 6.55/10)

     

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       - Advanced Features upgraded from 2/10 to 5/10

     

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       - **Production Ready** status achieved for most use cases

     

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       ### Version 0.4.0

     

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       - ✅ Structured error handling implemented (custom error classes)

     

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       - ✅ `ValidationError` with field-specific error grouping

     

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       - ✅ `ConnectionError`, `ConfigurationError`, and other error types

+35 -1

README.md

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         { key: { createdAt: 1 }, name: "created_at_idx" },

     

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       ]);

     

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       // Transactions (Requires MongoDB Replica Set or Sharded Cluster)

     

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       import { withTransaction } from "@nozzle/nozzle";

     

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       // Automatic transaction management with withTransaction

     

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       const result = await withTransaction(async (session) => {

     

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         // All operations in this callback are part of the same transaction

     

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         const user = await UserModel.insertOne(

     

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           { name: "Alice", email: "alice@example.com" },

     

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           { session } // Pass session to each operation

     

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         );

     

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         const order = await OrderModel.insertOne(

     

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           { userId: user.insertedId, total: 100 },

     

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           { session }

     

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         );

     

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         // If any operation fails, the entire transaction is automatically aborted

     

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         // If callback succeeds, transaction is automatically committed

     

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         return { user, order };

     

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       });

     

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       // Manual session management (for advanced use cases)

     

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       import { startSession, endSession } from "@nozzle/nozzle";

     

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       const session = startSession();

     

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       try {

     

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         await session.withTransaction(async () => {

     

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           await UserModel.insertOne({ name: "Bob", email: "bob@example.com" }, { session });

     

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           await UserModel.updateOne({ name: "Alice" }, { balance: 50 }, { session });

     

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         });

     

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       } finally {

     

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         await endSession(session);

     

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       }

     

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       // Error Handling

     

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       import { ValidationError, ConnectionError } from "@nozzle/nozzle";

     

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···

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       ## 🗺️ Roadmap

     

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       ### 🔴 Critical (Must Have)

     

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       -
       - [ ] Transactions support

     

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       - [x] Transactions support

     

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       - [x] Connection retry logic

     

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       - [x] Improved error handling

     

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       - [x] Connection health checks

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client.ts

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       import { type Db, type MongoClientOptions, MongoClient } from "mongodb";

     

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       import { 

     

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         type Db, 

     

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         type MongoClientOptions, 

     

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         type ClientSession,

     

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         type TransactionOptions,

     

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         MongoClient 

     

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       } from "mongodb";

     

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       import { ConnectionError } from "./errors.ts";

     

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       interface Connection {

     
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         if (connection) {

     

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           await connection.client.close();

     

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           connection = null;

     

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         }

     

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       }

     

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       /**

     

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        * Start a new client session for transactions

     

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        * 

     

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        * Sessions must be ended when done using `endSession()`

     

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        * 

     

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        * @example

     

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        * ```ts

     

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        * const session = await startSession();

     

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        * try {

     

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        *   // use session

     

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        * } finally {

     

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        *   await endSession(session);

     

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        * }

     

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       +
        * ```

     

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       +
        */

     

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       export function startSession(): ClientSession {

     

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       +
         if (!connection) {

     

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       +
           throw new ConnectionError("MongoDB not connected. Call connect() first.");

     

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       +
         }

     

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       +
         return connection.client.startSession();

     

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       +
       }

     

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       +
       

     

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       /**

     

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        * End a client session

     

       139
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       +
        * 

     

       140
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        * @param session - The session to end

     

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       +
        */

     

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       export async function endSession(session: ClientSession): Promise<void> {

     

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         await session.endSession();

     

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       +
       }

     

       145
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       +
       

     

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       /**

     

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        * Execute a function within a transaction

     

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       +
        * 

     

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        * Automatically handles session creation, transaction start/commit/abort, and cleanup.

     

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        * If the callback throws an error, the transaction is automatically aborted.

     

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        * 

     

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        * @param callback - Async function to execute within the transaction. Receives the session as parameter.

     

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        * @param options - Optional transaction options (read/write concern, etc.)

     

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        * @returns The result from the callback function

     

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       +
        * 

     

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        * @example

     

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       +
        * ```ts

     

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       +
        * const result = await withTransaction(async (session) => {

     

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        *   await UserModel.insertOne({ name: "Alice" }, { session });

     

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        *   await OrderModel.insertOne({ userId: "123", total: 100 }, { session });

     

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        *   return { success: true };

     

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        * });

     

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        * ```

     

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       +
        */

     

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       +
       export async function withTransaction<T>(

     

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       +
         callback: (session: ClientSession) => Promise<T>,

     

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       +
         options?: TransactionOptions

     

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       +
       ): Promise<T> {

     

       169
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       +
         const session = await startSession();

     

       170
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       +
         

     

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       +
         try {

     

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       +
           let result: T;

     

       173
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       +
           

     

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       +
           await session.withTransaction(async () => {

     

       175
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       +
             result = await callback(session);

     

       176
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       +
           }, options);

     

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       +
           

     

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           return result!;

     

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       +
         } finally {

     

       180
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       +
           await endSession(session);

     

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         }

     

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       }

     

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examples/.github/workflows/publish.yml

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examples/user.ts

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       import { z } from "@zod/zod";

     

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       import { ObjectId } from "mongodb";

     

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       import {

     

       4
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         connect,

     

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         disconnect,

     

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         type InferModel,

     

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         type Input,

     

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         Model,

     

       9
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       } from "../mod.ts";

     

       10
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       -
       

     

       11
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       // 1. Define your schema using Zod

     

       12
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       const userSchema = z.object({

     

       13
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         name: z.string(),

     

       14
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         email: z.email(),

     

       15
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         age: z.number().int().positive().optional(),

     

       16
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         createdAt: z.date().default(() => new Date()),

     

       17
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       });

     

       18
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       -
       

     

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       // Infer the TypeScript type from the Zod schema

     

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       type User = InferModel<typeof userSchema>;

     

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       type UserInsert = Input<typeof userSchema>;

     

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       -
       

     

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       async function runExample() {

     

       24
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         try {

     

       25
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           // 3. Connect to MongoDB

     

       26
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       -
           await connect("mongodb://localhost:27017", "nozzle_example");

     

       27
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           console.log("Connected to MongoDB");

     

       28
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       -
       

     

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           // 2. Create a Model for your collection

     

       30
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           const UserModel = new Model("users", userSchema);

     

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       32
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           // Clean up previous data

     

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           await UserModel.delete({});

     

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       -
       

     

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           // 4. Insert a new document

     

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           const newUser: UserInsert = {

     

       37
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       -
             name: "Alice Smith",

     

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             email: "alice@example.com",

     

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             age: 30,

     

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       -
           };

     

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           const insertResult = await UserModel.insertOne(newUser);

     

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           console.log("Inserted user:", insertResult.insertedId);

     

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       -
       

     

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           // 5. Find documents

     

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           const users = await UserModel.find({ name: "Alice Smith" });

     

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           console.log("Found users:", users);

     

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       -
       

     

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           // 6. Find one document

     

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           const foundUser = await UserModel.findOne({

     

       50
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       -
             _id: new ObjectId(insertResult.insertedId),

     

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       -
           });

     

       52
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           console.log("Found one user:", foundUser);

     

       53
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       -
       

     

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       -
           // 7. Update a document

     

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           const updateResult = await UserModel.update(

     

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             { _id: new ObjectId(insertResult.insertedId) },

     

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             { age: 31 },

     

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           );

     

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           console.log("Updated user count:", updateResult.modifiedCount);

     

       60
       60
       -
       

     

       61
       61
       -
           const updatedUser = await UserModel.findOne({

     

       62
       62
       -
             _id: new ObjectId(insertResult.insertedId),

     

       63
       63
       -
           });

     

       64
       64
       -
           console.log("Updated user data:", updatedUser);

     

       65
       65
       -
       

     

       66
       66
       -
           // 8. Delete documents

     

       67
       67
       -
           const deleteResult = await UserModel.delete({ name: "Alice Smith" });

     

       68
       68
       -
           console.log("Deleted user count:", deleteResult.deletedCount);

     

       69
       69
       -
         } catch (error) {

     

       70
       70
       -
           console.error("Error during example run:", error);

     

       71
       71
       -
         } finally {

     

       72
       72
       -
           // 9. Disconnect from MongoDB

     

       73
       73
       -
           await disconnect();

     

       74
       74
       -
           console.log("Disconnected from MongoDB");

     

       75
       75
       -
         }

     

       76
       76
       -
       }

     

       77
       77
       -
       

     

       78
       78
       -
       // Only run the example if this is the main module

     

       79
       79
       -
       if (import.meta.main) {

     

       80
       80
       -
         runExample();

     

       81
       81
       -
       }

+13 -1

mod.ts

···

       1
       1
        
       export { type InferModel, type Input } from "./schema.ts";

     

       2
       2
       -
       export { connect, disconnect, healthCheck, type ConnectOptions, type HealthCheckResult } from "./client.ts";

     

       2
       2
       +
       export { 

     

       3
       3
       +
         connect, 

     

       4
       4
       +
         disconnect, 

     

       5
       5
       +
         healthCheck, 

     

       6
       6
       +
         startSession,

     

       7
       7
       +
         endSession,

     

       8
       8
       +
         withTransaction,

     

       9
       9
       +
         type ConnectOptions, 

     

       10
       10
       +
         type HealthCheckResult 

     

       11
       11
       +
       } from "./client.ts";

     

       3
       12
        
       export { Model } from "./model.ts";

     

       4
       13
        
       export {

     

       5
       14
        
         NozzleError,

     
···

       10
       19
        
         OperationError,

     

       11
       20
        
         AsyncValidationError,

     

       12
       21
        
       } from "./errors.ts";

     

       22
       22
       +
       

     

       23
       23
       +
       // Re-export MongoDB types that users might need

     

       24
       24
       +
       export type { ClientSession, TransactionOptions } from "mongodb";

+67 -18

model.ts

···

       10
       10
        
         IndexSpecification,

     

       11
       11
        
         InsertManyResult,

     

       12
       12
        
         InsertOneResult,

     

       13
       13
       +
         InsertOneOptions,

     

       14
       14
       +
         FindOptions,

     

       15
       15
       +
         UpdateOptions,

     

       16
       16
       +
         ReplaceOptions,

     

       17
       17
       +
         DeleteOptions,

     

       18
       18
       +
         CountDocumentsOptions,

     

       19
       19
       +
         AggregateOptions,

     

       13
       20
        
         ListIndexesOptions,

     

       14
       21
        
         OptionalUnlessRequiredId,

     

       15
       22
        
         UpdateResult,

     

       16
       23
        
         WithId,

     

       24
       24
       +
         BulkWriteOptions,

     

       17
       25
        
       } from "mongodb";

     

       18
       26
        
       import { ObjectId } from "mongodb";

     

       19
       27
        
       import { getDb } from "./client.ts";

     
···

       81
       89
        
           this.schema = schema;

     

       82
       90
        
         }

     

       83
       91
        
       

     

       84
       84
       -
         async insertOne(data: Input<T>): Promise<InsertOneResult<Infer<T>>> {

     

       92
       92
       +
         async insertOne(

     

       93
       93
       +
           data: Input<T>,

     

       94
       94
       +
           options?: InsertOneOptions

     

       95
       95
       +
         ): Promise<InsertOneResult<Infer<T>>> {

     

       85
       96
        
           const validatedData = parse(this.schema, data);

     

       86
       97
        
           return await this.collection.insertOne(

     

       87
       98
        
             validatedData as OptionalUnlessRequiredId<Infer<T>>,

     

       99
       99
       +
             options

     

       88
       100
        
           );

     

       89
       101
        
         }

     

       90
       102
        
       

     

       91
       91
       -
         async insertMany(data: Input<T>[]): Promise<InsertManyResult<Infer<T>>> {

     

       103
       103
       +
         async insertMany(

     

       104
       104
       +
           data: Input<T>[],

     

       105
       105
       +
           options?: BulkWriteOptions

     

       106
       106
       +
         ): Promise<InsertManyResult<Infer<T>>> {

     

       92
       107
        
           const validatedData = data.map((item) => parse(this.schema, item));

     

       93
       108
        
           return await this.collection.insertMany(

     

       94
       109
        
             validatedData as OptionalUnlessRequiredId<Infer<T>>[],

     

       110
       110
       +
             options

     

       95
       111
        
           );

     

       96
       112
        
         }

     

       97
       113
        
       

     

       98
       98
       -
         async find(query: Filter<Infer<T>>): Promise<(WithId<Infer<T>>)[]> {

     

       99
       99
       -
           return await this.collection.find(query).toArray();

     

       114
       114
       +
         async find(

     

       115
       115
       +
           query: Filter<Infer<T>>,

     

       116
       116
       +
           options?: FindOptions

     

       117
       117
       +
         ): Promise<(WithId<Infer<T>>)[]> {

     

       118
       118
       +
           return await this.collection.find(query, options).toArray();

     

       100
       119
        
         }

     

       101
       120
        
       

     

       102
       102
       -
         async findOne(query: Filter<Infer<T>>): Promise<WithId<Infer<T>> | null> {

     

       103
       103
       -
           return await this.collection.findOne(query);

     

       121
       121
       +
         async findOne(

     

       122
       122
       +
           query: Filter<Infer<T>>,

     

       123
       123
       +
           options?: FindOptions

     

       124
       124
       +
         ): Promise<WithId<Infer<T>> | null> {

     

       125
       125
       +
           return await this.collection.findOne(query, options);

     

       104
       126
        
         }

     

       105
       127
        
       

     

       106
       106
       -
         async findById(id: string | ObjectId): Promise<WithId<Infer<T>> | null> {

     

       128
       128
       +
         async findById(

     

       129
       129
       +
           id: string | ObjectId,

     

       130
       130
       +
           options?: FindOptions

     

       131
       131
       +
         ): Promise<WithId<Infer<T>> | null> {

     

       107
       132
        
           const objectId = typeof id === "string" ? new ObjectId(id) : id;

     

       108
       108
       -
           return await this.findOne({ _id: objectId } as Filter<Infer<T>>);

     

       133
       133
       +
           return await this.findOne({ _id: objectId } as Filter<Infer<T>>, options);

     

       109
       134
        
         }

     

       110
       135
        
       

     

       111
       136
        
         async update(

     

       112
       137
        
           query: Filter<Infer<T>>,

     

       113
       138
        
           data: Partial<z.infer<T>>,

     

       139
       139
       +
           options?: UpdateOptions

     

       114
       140
        
         ): Promise<UpdateResult<Infer<T>>> {

     

       115
       141
        
           const validatedData = parsePartial(this.schema, data);

     

       116
       116
       -
           return await this.collection.updateMany(query, { $set: validatedData as Partial<Infer<T>> });

     

       142
       142
       +
           return await this.collection.updateMany(

     

       143
       143
       +
             query, 

     

       144
       144
       +
             { $set: validatedData as Partial<Infer<T>> },

     

       145
       145
       +
             options

     

       146
       146
       +
           );

     

       117
       147
        
         }

     

       118
       148
        
       

     

       119
       149
        
         async updateOne(

     

       120
       150
        
           query: Filter<Infer<T>>,

     

       121
       151
        
           data: Partial<z.infer<T>>,

     

       152
       152
       +
           options?: UpdateOptions

     

       122
       153
        
         ): Promise<UpdateResult<Infer<T>>> {

     

       123
       154
        
           const validatedData = parsePartial(this.schema, data);

     

       124
       124
       -
           return await this.collection.updateOne(query, { $set: validatedData as Partial<Infer<T>> });

     

       155
       155
       +
           return await this.collection.updateOne(

     

       156
       156
       +
             query, 

     

       157
       157
       +
             { $set: validatedData as Partial<Infer<T>> },

     

       158
       158
       +
             options

     

       159
       159
       +
           );

     

       125
       160
        
         }

     

       126
       161
        
       

     

       127
       162
        
         async replaceOne(

     

       128
       163
        
           query: Filter<Infer<T>>,

     

       129
       164
        
           data: Input<T>,

     

       165
       165
       +
           options?: ReplaceOptions

     

       130
       166
        
         ): Promise<UpdateResult<Infer<T>>> {

     

       131
       167
        
           const validatedData = parseReplace(this.schema, data);

     

       132
       168
        
           // Remove _id from validatedData for replaceOne (it will use the query's _id)

     
···

       134
       170
        
           return await this.collection.replaceOne(

     

       135
       171
        
             query,

     

       136
       172
        
             withoutId as Infer<T>,

     

       173
       173
       +
             options

     

       137
       174
        
           );

     

       138
       175
        
         }

     

       139
       176
        
       

     

       140
       140
       -
         async delete(query: Filter<Infer<T>>): Promise<DeleteResult> {

     

       141
       141
       -
           return await this.collection.deleteMany(query);

     

       177
       177
       +
         async delete(

     

       178
       178
       +
           query: Filter<Infer<T>>,

     

       179
       179
       +
           options?: DeleteOptions

     

       180
       180
       +
         ): Promise<DeleteResult> {

     

       181
       181
       +
           return await this.collection.deleteMany(query, options);

     

       142
       182
        
         }

     

       143
       183
        
       

     

       144
       144
       -
         async deleteOne(query: Filter<Infer<T>>): Promise<DeleteResult> {

     

       145
       145
       -
           return await this.collection.deleteOne(query);

     

       184
       184
       +
         async deleteOne(

     

       185
       185
       +
           query: Filter<Infer<T>>,

     

       186
       186
       +
           options?: DeleteOptions

     

       187
       187
       +
         ): Promise<DeleteResult> {

     

       188
       188
       +
           return await this.collection.deleteOne(query, options);

     

       146
       189
        
         }

     

       147
       190
        
       

     

       148
       148
       -
         async count(query: Filter<Infer<T>>): Promise<number> {

     

       149
       149
       -
           return await this.collection.countDocuments(query);

     

       191
       191
       +
         async count(

     

       192
       192
       +
           query: Filter<Infer<T>>,

     

       193
       193
       +
           options?: CountDocumentsOptions

     

       194
       194
       +
         ): Promise<number> {

     

       195
       195
       +
           return await this.collection.countDocuments(query, options);

     

       150
       196
        
         }

     

       151
       197
        
       

     

       152
       152
       -
         async aggregate(pipeline: Document[]): Promise<Document[]> {

     

       153
       153
       -
           return await this.collection.aggregate(pipeline).toArray();

     

       198
       198
       +
         async aggregate(

     

       199
       199
       +
           pipeline: Document[],

     

       200
       200
       +
           options?: AggregateOptions

     

       201
       201
       +
         ): Promise<Document[]> {

     

       202
       202
       +
           return await this.collection.aggregate(pipeline, options).toArray();

     

       154
       203
        
         }

     

       155
       204
        
       

     

       156
       205
        
         // Pagination support for find

+329

tests/transactions_test.ts

···

       1
       1
       +
       import { assertEquals, assertExists, assertRejects } from "@std/assert";

     

       2
       2
       +
       import {

     

       3
       3
       +
         connect,

     

       4
       4
       +
         disconnect,

     

       5
       5
       +
         Model,

     

       6
       6
       +
         withTransaction,

     

       7
       7
       +
         startSession,

     

       8
       8
       +
         endSession,

     

       9
       9
       +
       } from "../mod.ts";

     

       10
       10
       +
       import { z } from "@zod/zod";

     

       11
       11
       +
       import { MongoMemoryReplSet } from "mongodb-memory-server-core";

     

       12
       12
       +
       

     

       13
       13
       +
       let replSet: MongoMemoryReplSet | null = null;

     

       14
       14
       +
       

     

       15
       15
       +
       async function setupTestReplSet() {

     

       16
       16
       +
         if (!replSet) {

     

       17
       17
       +
           replSet = await MongoMemoryReplSet.create({

     

       18
       18
       +
             replSet: { 

     

       19
       19
       +
               count: 3,

     

       20
       20
       +
               storageEngine: 'wiredTiger' // Required for transactions

     

       21
       21
       +
             },

     

       22
       22
       +
           });

     

       23
       23
       +
         }

     

       24
       24
       +
         return replSet.getUri();

     

       25
       25
       +
       }

     

       26
       26
       +
       

     

       27
       27
       +
       Deno.test.afterEach(async () => {

     

       28
       28
       +
         // Clean up database

     

       29
       29
       +
         if (replSet) {

     

       30
       30
       +
           try {

     

       31
       31
       +
             const { getDb } = await import("../client.ts");

     

       32
       32
       +
             const db = getDb();

     

       33
       33
       +
             await db.dropDatabase();

     

       34
       34
       +
           } catch {

     

       35
       35
       +
             // Ignore if not connected

     

       36
       36
       +
           }

     

       37
       37
       +
         }

     

       38
       38
       +
         await disconnect();

     

       39
       39
       +
       });

     

       40
       40
       +
       

     

       41
       41
       +
       Deno.test.afterAll(async () => {

     

       42
       42
       +
         if (replSet) {

     

       43
       43
       +
           await replSet.stop();

     

       44
       44
       +
           replSet = null;

     

       45
       45
       +
         }

     

       46
       46
       +
       });

     

       47
       47
       +
       

     

       48
       48
       +
       // Test schemas

     

       49
       49
       +
       const userSchema = z.object({

     

       50
       50
       +
         name: z.string().min(1),

     

       51
       51
       +
         email: z.string().email(),

     

       52
       52
       +
         balance: z.number().nonnegative().default(0),

     

       53
       53
       +
       });

     

       54
       54
       +
       

     

       55
       55
       +
       const orderSchema = z.object({

     

       56
       56
       +
         userId: z.string(),

     

       57
       57
       +
         amount: z.number().positive(),

     

       58
       58
       +
         status: z.enum(["pending", "completed", "failed"]).default("pending"),

     

       59
       59
       +
       });

     

       60
       60
       +
       

     

       61
       61
       +
       Deno.test({

     

       62
       62
       +
         name: "Transactions: withTransaction - should commit successful operations",

     

       63
       63
       +
         async fn() {

     

       64
       64
       +
           const uri = await setupTestReplSet();

     

       65
       65
       +
           await connect(uri, "test_db");

     

       66
       66
       +
           

     

       67
       67
       +
           const UserModel = new Model("users", userSchema);

     

       68
       68
       +
           const OrderModel = new Model("orders", orderSchema);

     

       69
       69
       +
           

     

       70
       70
       +
           const result = await withTransaction(async (session) => {

     

       71
       71
       +
             const user = await UserModel.insertOne(

     

       72
       72
       +
               { name: "Alice", email: "alice@example.com", balance: 100 },

     

       73
       73
       +
               { session }

     

       74
       74
       +
             );

     

       75
       75
       +
             

     

       76
       76
       +
             const order = await OrderModel.insertOne(

     

       77
       77
       +
               { userId: user.insertedId.toString(), amount: 50 },

     

       78
       78
       +
               { session }

     

       79
       79
       +
             );

     

       80
       80
       +
             

     

       81
       81
       +
             return { userId: user.insertedId, orderId: order.insertedId };

     

       82
       82
       +
           });

     

       83
       83
       +
           

     

       84
       84
       +
           assertExists(result.userId);

     

       85
       85
       +
           assertExists(result.orderId);

     

       86
       86
       +
           

     

       87
       87
       +
           // Verify data was committed

     

       88
       88
       +
           const users = await UserModel.find({});

     

       89
       89
       +
           const orders = await OrderModel.find({});

     

       90
       90
       +
           assertEquals(users.length, 1);

     

       91
       91
       +
           assertEquals(orders.length, 1);

     

       92
       92
       +
         },

     

       93
       93
       +
         sanitizeResources: false,

     

       94
       94
       +
         sanitizeOps: false,

     

       95
       95
       +
       });

     

       96
       96
       +
       

     

       97
       97
       +
       Deno.test({

     

       98
       98
       +
         name: "Transactions: withTransaction - should abort on error",

     

       99
       99
       +
         async fn() {

     

       100
       100
       +
           const uri = await setupTestReplSet();

     

       101
       101
       +
           await connect(uri, "test_db");

     

       102
       102
       +
           

     

       103
       103
       +
           const UserModel = new Model("users", userSchema);

     

       104
       104
       +
           

     

       105
       105
       +
           await assertRejects(

     

       106
       106
       +
             async () => {

     

       107
       107
       +
               await withTransaction(async (session) => {

     

       108
       108
       +
                 await UserModel.insertOne(

     

       109
       109
       +
                   { name: "Bob", email: "bob@example.com" },

     

       110
       110
       +
                   { session }

     

       111
       111
       +
                 );

     

       112
       112
       +
                 

     

       113
       113
       +
                 // This will fail and abort the transaction

     

       114
       114
       +
                 throw new Error("Simulated error");

     

       115
       115
       +
               });

     

       116
       116
       +
             },

     

       117
       117
       +
             Error,

     

       118
       118
       +
             "Simulated error"

     

       119
       119
       +
           );

     

       120
       120
       +
           

     

       121
       121
       +
           // Verify no data was committed

     

       122
       122
       +
           const users = await UserModel.find({});

     

       123
       123
       +
           assertEquals(users.length, 0);

     

       124
       124
       +
         },

     

       125
       125
       +
         sanitizeResources: false,

     

       126
       126
       +
         sanitizeOps: false,

     

       127
       127
       +
       });

     

       128
       128
       +
       

     

       129
       129
       +
       Deno.test({

     

       130
       130
       +
         name: "Transactions: withTransaction - should handle multiple operations",

     

       131
       131
       +
         async fn() {

     

       132
       132
       +
           const uri = await setupTestReplSet();

     

       133
       133
       +
           await connect(uri, "test_db");

     

       134
       134
       +
           

     

       135
       135
       +
           const UserModel = new Model("users", userSchema);

     

       136
       136
       +
           

     

       137
       137
       +
           const result = await withTransaction(async (session) => {

     

       138
       138
       +
             const users = [];

     

       139
       139
       +
             

     

       140
       140
       +
             for (let i = 0; i < 5; i++) {

     

       141
       141
       +
               const user = await UserModel.insertOne(

     

       142
       142
       +
                 { name: `User${i}`, email: `user${i}@example.com` },

     

       143
       143
       +
                 { session }

     

       144
       144
       +
               );

     

       145
       145
       +
               users.push(user.insertedId);

     

       146
       146
       +
             }

     

       147
       147
       +
             

     

       148
       148
       +
             return users;

     

       149
       149
       +
           });

     

       150
       150
       +
           

     

       151
       151
       +
           assertEquals(result.length, 5);

     

       152
       152
       +
           

     

       153
       153
       +
           // Verify all users were created

     

       154
       154
       +
           const users = await UserModel.find({});

     

       155
       155
       +
           assertEquals(users.length, 5);

     

       156
       156
       +
         },

     

       157
       157
       +
         sanitizeResources: false,

     

       158
       158
       +
         sanitizeOps: false,

     

       159
       159
       +
       });

     

       160
       160
       +
       

     

       161
       161
       +
       Deno.test({

     

       162
       162
       +
         name: "Transactions: withTransaction - should support read and write operations",

     

       163
       163
       +
         async fn() {

     

       164
       164
       +
           const uri = await setupTestReplSet();

     

       165
       165
       +
           await connect(uri, "test_db");

     

       166
       166
       +
           

     

       167
       167
       +
           const UserModel = new Model("users", userSchema);

     

       168
       168
       +
           

     

       169
       169
       +
           // Insert initial user

     

       170
       170
       +
           const initialUser = await UserModel.insertOne({

     

       171
       171
       +
             name: "Charlie",

     

       172
       172
       +
             email: "charlie@example.com",

     

       173
       173
       +
             balance: 100,

     

       174
       174
       +
           });

     

       175
       175
       +
           

     

       176
       176
       +
           const result = await withTransaction(async (session) => {

     

       177
       177
       +
             // Read

     

       178
       178
       +
             const user = await UserModel.findById(initialUser.insertedId, { session });

     

       179
       179
       +
             assertExists(user);

     

       180
       180
       +
             

     

       181
       181
       +
             // Update

     

       182
       182
       +
             await UserModel.updateOne(

     

       183
       183
       +
               { _id: initialUser.insertedId },

     

       184
       184
       +
               { balance: 150 },

     

       185
       185
       +
               { session }

     

       186
       186
       +
             );

     

       187
       187
       +
             

     

       188
       188
       +
             // Read again

     

       189
       189
       +
             const updatedUser = await UserModel.findById(initialUser.insertedId, { session });

     

       190
       190
       +
             

     

       191
       191
       +
             return updatedUser?.balance;

     

       192
       192
       +
           });

     

       193
       193
       +
           

     

       194
       194
       +
           assertEquals(result, 150);

     

       195
       195
       +
         },

     

       196
       196
       +
         sanitizeResources: false,

     

       197
       197
       +
         sanitizeOps: false,

     

       198
       198
       +
       });

     

       199
       199
       +
       

     

       200
       200
       +
       Deno.test({

     

       201
       201
       +
         name: "Transactions: withTransaction - should handle validation errors",

     

       202
       202
       +
         async fn() {

     

       203
       203
       +
           const uri = await setupTestReplSet();

     

       204
       204
       +
           await connect(uri, "test_db");

     

       205
       205
       +
           

     

       206
       206
       +
           const UserModel = new Model("users", userSchema);

     

       207
       207
       +
           

     

       208
       208
       +
           await assertRejects(

     

       209
       209
       +
             async () => {

     

       210
       210
       +
               await withTransaction(async (session) => {

     

       211
       211
       +
                 // Valid insert

     

       212
       212
       +
                 await UserModel.insertOne(

     

       213
       213
       +
                   { name: "Valid", email: "valid@example.com" },

     

       214
       214
       +
                   { session }

     

       215
       215
       +
                 );

     

       216
       216
       +
                 

     

       217
       217
       +
                 // Invalid insert (will throw ValidationError)

     

       218
       218
       +
                 await UserModel.insertOne(

     

       219
       219
       +
                   { name: "", email: "invalid" },

     

       220
       220
       +
                   { session }

     

       221
       221
       +
                 );

     

       222
       222
       +
               });

     

       223
       223
       +
             },

     

       224
       224
       +
             Error // ValidationError

     

       225
       225
       +
           );

     

       226
       226
       +
           

     

       227
       227
       +
           // Transaction should have been aborted, no data should exist

     

       228
       228
       +
           const users = await UserModel.find({});

     

       229
       229
       +
           assertEquals(users.length, 0);

     

       230
       230
       +
         },

     

       231
       231
       +
         sanitizeResources: false,

     

       232
       232
       +
         sanitizeOps: false,

     

       233
       233
       +
       });

     

       234
       234
       +
       

     

       235
       235
       +
       Deno.test({

     

       236
       236
       +
         name: "Transactions: Manual session - should work with manual session management",

     

       237
       237
       +
         async fn() {

     

       238
       238
       +
           const uri = await setupTestReplSet();

     

       239
       239
       +
           await connect(uri, "test_db");

     

       240
       240
       +
           

     

       241
       241
       +
           const UserModel = new Model("users", userSchema);

     

       242
       242
       +
           

     

       243
       243
       +
           const session = startSession();

     

       244
       244
       +
           

     

       245
       245
       +
           try {

     

       246
       246
       +
             await session.withTransaction(async () => {

     

       247
       247
       +
               await UserModel.insertOne(

     

       248
       248
       +
                 { name: "Dave", email: "dave@example.com" },

     

       249
       249
       +
                 { session }

     

       250
       250
       +
               );

     

       251
       251
       +
               await UserModel.insertOne(

     

       252
       252
       +
                 { name: "Eve", email: "eve@example.com" },

     

       253
       253
       +
                 { session }

     

       254
       254
       +
               );

     

       255
       255
       +
             });

     

       256
       256
       +
           } finally {

     

       257
       257
       +
             await endSession(session);

     

       258
       258
       +
           }

     

       259
       259
       +
           

     

       260
       260
       +
           // Verify both users were created

     

       261
       261
       +
           const users = await UserModel.find({});

     

       262
       262
       +
           assertEquals(users.length, 2);

     

       263
       263
       +
         },

     

       264
       264
       +
         sanitizeResources: false,

     

       265
       265
       +
         sanitizeOps: false,

     

       266
       266
       +
       });

     

       267
       267
       +
       

     

       268
       268
       +
       Deno.test({

     

       269
       269
       +
         name: "Transactions: withTransaction - should support delete operations",

     

       270
       270
       +
         async fn() {

     

       271
       271
       +
           const uri = await setupTestReplSet();

     

       272
       272
       +
           await connect(uri, "test_db");

     

       273
       273
       +
           

     

       274
       274
       +
           const UserModel = new Model("users", userSchema);

     

       275
       275
       +
           

     

       276
       276
       +
           // Insert initial users

     

       277
       277
       +
           await UserModel.insertMany([

     

       278
       278
       +
             { name: "User1", email: "user1@example.com" },

     

       279
       279
       +
             { name: "User2", email: "user2@example.com" },

     

       280
       280
       +
             { name: "User3", email: "user3@example.com" },

     

       281
       281
       +
           ]);

     

       282
       282
       +
           

     

       283
       283
       +
           await withTransaction(async (session) => {

     

       284
       284
       +
             // Delete one user

     

       285
       285
       +
             await UserModel.deleteOne({ name: "User1" }, { session });

     

       286
       286
       +
             

     

       287
       287
       +
             // Delete multiple users

     

       288
       288
       +
             await UserModel.delete({ name: { $in: ["User2", "User3"] } }, { session });

     

       289
       289
       +
           });

     

       290
       290
       +
           

     

       291
       291
       +
           // Verify all were deleted

     

       292
       292
       +
           const users = await UserModel.find({});

     

       293
       293
       +
           assertEquals(users.length, 0);

     

       294
       294
       +
         },

     

       295
       295
       +
         sanitizeResources: false,

     

       296
       296
       +
         sanitizeOps: false,

     

       297
       297
       +
       });

     

       298
       298
       +
       

     

       299
       299
       +
       Deno.test({

     

       300
       300
       +
         name: "Transactions: withTransaction - should handle transaction options",

     

       301
       301
       +
         async fn() {

     

       302
       302
       +
           const uri = await setupTestReplSet();

     

       303
       303
       +
           await connect(uri, "test_db");

     

       304
       304
       +
           

     

       305
       305
       +
           const UserModel = new Model("users", userSchema);

     

       306
       306
       +
           

     

       307
       307
       +
           const result = await withTransaction(

     

       308
       308
       +
             async (session) => {

     

       309
       309
       +
               await UserModel.insertOne(

     

       310
       310
       +
                 { name: "Frank", email: "frank@example.com" },

     

       311
       311
       +
                 { session }

     

       312
       312
       +
               );

     

       313
       313
       +
               return "success";

     

       314
       314
       +
             },

     

       315
       315
       +
             {

     

       316
       316
       +
               readPreference: "primary",

     

       317
       317
       +
               readConcern: { level: "snapshot" },

     

       318
       318
       +
               writeConcern: { w: "majority" },

     

       319
       319
       +
             }

     

       320
       320
       +
           );

     

       321
       321
       +
           

     

       322
       322
       +
           assertEquals(result, "success");

     

       323
       323
       +
           

     

       324
       324
       +
           const users = await UserModel.find({});

     

       325
       325
       +
           assertEquals(users.length, 1);

     

       326
       326
       +
         },

     

       327
       327
       +
         sanitizeResources: false,

     

       328
       328
       +
         sanitizeOps: false,

     

       329
       329
       +
       });