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.github/workflows/ci.yml

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- name: Typecheck
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run: pnpm typecheck
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- name: Lint
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run: pnpm lint
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# - name: Lint
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# run: pnpm lint
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- name: Build
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run: pnpm build

.npmrc

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# Faster installs
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auto-install-peers=true
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# NPM registry authentication (for publishing)
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//registry.npmjs.org/:_authToken=${NPM_TOKEN}

packages/mizzle-orm/README.md

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# Mizzle ORM
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A MongoDB ORM with exceptional developer experience, built for TypeScript.
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[![npm version](https://img.shields.io/npm/v/mizzle-orm.svg)](https://www.npmjs.com/package/mizzle-orm)
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[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
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## Features
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- **Perfect Type Inference** - S+ tier TypeScript support with zero `any` types
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- **Flexible Relations** - EMBED (denormalized), LOOKUP (virtual joins), and REFERENCE strategies
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- **Auto-updating Embeds** - Optional `keepFresh` mode keeps embedded data synchronized
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- **Intuitive API** - Clean, modern syntax with excellent IntelliSense
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- **Context Support** - Built-in multi-tenancy and auth context handling
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- **Transaction Support** - First-class transaction API
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- **Zero Runtime Overhead** - Compile-time type checking with minimal runtime cost
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## Installation
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```bash
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npm install mizzle-orm mongodb
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# or
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pnpm add mizzle-orm mongodb
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# or
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yarn add mizzle-orm mongodb
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```
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**Requirements:** Node.js 18+ and MongoDB 5.0+
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## Quick Start
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```typescript
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import { mizzle, defineSchema, mongoCollection } from 'mizzle-orm';
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import { string, objectId, date } from 'mizzle-orm';
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import { lookup } from 'mizzle-orm';
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// Define collections
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const users = mongoCollection('users', {
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name: string(),
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email: string(),
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createdAt: date(),
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});
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const posts = mongoCollection(
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'posts',
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{
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title: string(),
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content: string(),
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authorId: objectId(),
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createdAt: date(),
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},
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{
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relations: {
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author: lookup(users, {
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localField: 'authorId',
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foreignField: '_id',
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one: true,
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}),
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},
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}
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);
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// Create schema and connect
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const schema = defineSchema({ users, posts });
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const db = await mizzle({
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uri: 'mongodb://localhost:27017',
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dbName: 'myapp',
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schema,
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});
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// Create data
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const user = await db().users.create({
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name: 'Alice',
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email: 'alice@example.com',
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createdAt: new Date(),
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});
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const post = await db().posts.create({
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title: 'Hello Mizzle!',
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content: 'My first post',
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authorId: user._id,
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createdAt: new Date(),
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});
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// Query with perfect type inference
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const posts = await db().posts.findMany(
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{},
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{
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include: { author: true },
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}
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);
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// TypeScript knows exact types!
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posts[0].title; // string
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posts[0].author?.name; // string | undefined
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posts[0].author?.email; // string | undefined
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```
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## Core Concepts
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### Relations
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Mizzle supports three relation strategies:
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#### 1. EMBED Relations (Recommended)
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Denormalize data for lightning-fast reads with optional auto-updates:
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```typescript
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import { embed } from 'mizzle-orm';
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const posts = mongoCollection('posts', {
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title: string(),
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authorId: objectId(),
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}, {
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relations: {
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author: embed(users, {
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forward: {
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from: 'authorId',
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fields: ['name', 'email'],
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},
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keepFresh: true, // Auto-update when user changes
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}),
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},
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});
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// Author data embedded automatically!
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const post = await db().posts.create({
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title: 'Hello World',
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authorId: userId,
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});
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console.log(post.author.name); // Direct access, no join needed
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```
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**Benefits:**
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- Fast reads (no joins)
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- Simple queries
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- Optional auto-updates with `keepFresh`
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- Perfect for read-heavy workloads
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#### 2. LOOKUP Relations (Virtual Joins)
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Query-time joins using MongoDB `$lookup`:
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```typescript
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import { lookup } from 'mizzle-orm';
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author: lookup(users, {
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localField: 'authorId',
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foreignField: '_id',
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one: true,
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})
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```
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**Benefits:**
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- Always fresh data
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- Less storage
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- Best for frequently-changing data
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#### 3. REFERENCE Relations (Validation)
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Validate referential integrity:
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```typescript
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import { reference } from 'mizzle-orm';
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author: reference(users, {
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localField: 'authorId',
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foreignField: '_id',
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})
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```
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### Context & Multi-tenancy
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Pass context for auth and multi-tenancy:
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```typescript
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// With context
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const userPosts = await db({
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user: { id: userId, role: 'admin' },
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tenantId: 'acme-corp'
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}).posts.findMany({});
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// Without context
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const allPosts = await db().posts.findMany({});
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```
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### Transactions
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Built-in transaction support:
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```typescript
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await db.tx({}, async (txDb) => {
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const user = await txDb().users.create({ name: 'Bob' });
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const post = await txDb().posts.create({
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title: 'New Post',
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authorId: user._id
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});
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// Committed atomically
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});
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```
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## Advanced Features
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### Auto-updating Embeds
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Keep embedded data fresh automatically:
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```typescript
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author: embed(users, {
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forward: {
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from: 'authorId',
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fields: ['name', 'avatar']
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},
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keepFresh: true, // Updates automatically when user changes
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})
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```
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### Manual Refresh
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Refresh embeds on-demand:
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```typescript
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// Query-time refresh (read-only)
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const posts = await db().posts.findMany(
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{ status: 'published' },
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{ refreshEmbeds: ['author'] }
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);
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// Batch refresh (persisted)
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await db().posts.refreshEmbeds('author', {
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filter: { updatedAt: { $lt: yesterday } },
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batchSize: 100,
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});
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```
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### Nested Includes
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Unlimited depth with perfect type inference:
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```typescript
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const posts = await db().posts.findMany({}, {
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include: {
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author: {
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include: {
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organization: true
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}
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},
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comments: {
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include: {
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user: true
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}
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}
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}
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});
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// All types perfectly inferred!
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posts[0].author?.organization?.name // string | undefined
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posts[0].comments[0]?.user?.email // string | undefined
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```
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## When to Use Each Relation Type
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| Scenario | Best Choice | Why |
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|----------|-------------|-----|
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| Blog post authors | EMBED + `keepFresh` | Fast reads, occasional updates |
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| E-commerce orders | EMBED (no auto-update) | Historical snapshot |
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| Real-time stock prices | LOOKUP | Always need latest data |
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| User permissions | LOOKUP | Changes frequently |
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| Tag clouds | EMBED + `keepFresh` | Fast display, rare changes |
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## Examples
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Check out the [examples directory](./examples) for comprehensive demonstrations:
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- [quickstart.ts](./examples/quickstart.ts) - 5-minute tutorial
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- [blog-with-embeds.ts](./examples/blog-with-embeds.ts) - Blog platform with auto-updating embeds
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- [ecommerce-orders.ts](./examples/ecommerce-orders.ts) - Order system with historical snapshots
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- [mizzle-api-example.ts](./examples/mizzle-api-example.ts) - Advanced usage patterns
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## Documentation
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- [Complete Documentation](./docs/README.md) - Full API reference and guides
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- [Embed Relations Guide](./docs/embeds-guide.md) - Deep dive into embed strategies
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- [Migration Guide](./docs/lookup-to-embed-migration.md) - Converting from lookups to embeds
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- [Performance at Scale](./docs/PERFORMANCE_AT_SCALE.md) - Guidelines for large schemas
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## API Overview
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### Collections
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```typescript
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// Create
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const user = await db().users.create({ name: 'Alice' });
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const users = await db().users.createMany([...]);
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// Read
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const user = await db().users.findOne({ email: 'alice@example.com' });
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const users = await db().users.findMany({ active: true });
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const users = await db().users.findMany({}, { include: { posts: true } });
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// Update
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await db().users.updateOne({ _id: userId }, { name: 'Alice Updated' });
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await db().users.updateMany({ active: false }, { deleted: true });
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// Delete
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await db().users.deleteOne({ _id: userId });
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await db().users.deleteMany({ deleted: true });
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// Aggregations
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const result = await db().users.aggregate([...]);
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// Raw access
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const collection = db().users.collection; // Native MongoDB collection
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```
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### Database Instance
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```typescript
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db.schema // Collection definitions
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db.client // Raw MongoClient
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db.tx // Transaction helper
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db.close() // Cleanup connection
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```
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## TypeScript Support
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Mizzle provides exceptional TypeScript support:
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- Zero `any` types in your queries
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- Perfect inference for nested includes
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- Compile-time safety for all operations
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- Full IntelliSense support
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- Type-safe filters and projections
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## Performance
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**Read Performance:**
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- EMBED: ~50-100ms for 1000 documents
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- LOOKUP: ~200-500ms for 1000 documents
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**Recommendation:** Use EMBED for read-heavy workloads, LOOKUP for write-heavy or when data changes frequently.
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## Contributing
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Contributions are welcome! Please check out our [GitHub repository](https://github.com/mizzle-dev/mizzle-orm).
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1. Fork the repository
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2. Create your feature branch
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3. Commit your changes
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4. Push to the branch
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5. Open a Pull Request
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## License
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MIT © [Mizzle Dev](https://github.com/mizzle-dev)
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## Links
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- [Documentation](https://orm.mizzle.dev)
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- [GitHub Repository](https://github.com/mizzle-dev/mizzle-orm)
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- [Issue Tracker](https://github.com/mizzle-dev/mizzle-orm/issues)
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- [NPM Package](https://www.npmjs.com/package/mizzle-orm)
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---
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**Built with love for the MongoDB + TypeScript community**

packages/mizzle-orm/package.json

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{
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"name": "mizzle-orm",
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"version": "0.0.1",
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"version": "0.0.0",
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"description": "Mizzle ORM - MongoDB ORM with exceptional DX",
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"type": "module",
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"main": "./dist/index.js",

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