From b24ee702301a847c2f2c4e1815b8814f4f8dd614 Mon Sep 17 00:00:00 2001 From: "codegen-sh[bot]" <131295404+codegen-sh[bot]@users.noreply.github.com> Date: Sun, 28 Dec 2025 00:28:06 +0000 Subject: [PATCH] Add comprehensive NPM package analysis for michie v1.0.0 - Complete 13-section analysis covering architecture, API, features, and quality - Analyzed entry points, exports, and functionality deep dive - Zero dependencies, ESM-only, plugin-based architecture - Quality score: 6.5/10 (excellent design, needs tests and TypeScript) - 15 core features including memoization engine and 10 plugins - Comprehensive integration examples and recommendations Co-authored-by: Zeeeepa --- npm_analysis/packages/michie_analysis.md | 813 +++++++++++++++++++++++ 1 file changed, 813 insertions(+) create mode 100644 npm_analysis/packages/michie_analysis.md diff --git a/npm_analysis/packages/michie_analysis.md b/npm_analysis/packages/michie_analysis.md new file mode 100644 index 00000000..68c37edd --- /dev/null +++ b/npm_analysis/packages/michie_analysis.md @@ -0,0 +1,813 @@ +# Package Analysis: michie + +**Analysis Date**: 2025-12-28 +**Package**: michie +**Version**: 1.0.0 +**NPM URL**: https://www.npmjs.com/package/michie +**Repository**: https://github.com/catpea/michie +**License**: MIT + +--- + +## Executive Summary + +**Michie** is an intelligent memoization library for JavaScript, created in honor of Donald Michie (1923-2007), a pioneer of Artificial Intelligence and the inventor of memoization. The package provides a robust, plugin-based memoization system that caches expensive function results to dramatically improve performance. + +**Key Strengths**: +- 🎯 **Elegant API**: Single-line integration with Proxy-based transparent memoization +- 🔌 **Extensible Architecture**: 10 built-in plugins for advanced caching strategies +- ⚡ **Performance**: Claims 100x+ speedups for expensive computations +- 🧠 **Intelligent**: Automatic cache key generation, TTL support, async handling +- 📦 **Lightweight**: 42.7 kB unpacked, 12.8 kB tarball + +**Package Maturity**: v1.0.0 (Initial release) - Early stage, production-ready design but limited adoption metrics available + +--- + +## 1. Package Overview + +### Basic Information +- **Name**: michie +- **Current Version**: 1.0.0 +- **Description**: "Intelligent memoization for JavaScript - honoring Donald Michie, pioneer of AI and inventor of memoization" +- **Author**: Created in honor of Donald Michie (1923-2007) +- **Contributors**: Claude (Anthropic) - AI Assistant and Implementation +- **License**: MIT +- **Repository**: https://github.com/catpea/michie + +### Package Statistics +- **Package Size**: 12.8 kB (tarball) +- **Unpacked Size**: 42.7 kB +- **Total Files**: 15 +- **Downloads/Week**: Data not available (new package) +- **Dependents**: 0 (new package) +- **Last Published**: 2025 (recent) + +### Keywords & Categories +- **Primary**: memoization, memoize, cache, caching +- **Secondary**: performance, optimization, donald-michie, ai, machine-learning +- **Use Cases**: lazy-evaluation, function-cache, decorator, proxy + +### Node.js Requirements +- **Minimum**: Node.js >= 14.0.0 +- **Module Type**: ESM (ES Modules) - `"type": "module"` in package.json + +### Repository Information +- **Type**: git +- **URL**: https://github.com/catpea/michie +- **GitHub Stars**: Unknown (new repository) +- **Issues**: Unknown +- **Pull Requests**: Unknown + +--- + +## 2. Installation & Setup + +### Installation + +```bash +npm install michie +``` + +### Quick Start Example + +```javascript +import { Memoize } from 'michie'; + +class Website { + constructor({ src, dest }) { + this.src = src; + this.dest = dest; + + // Single line to enable memoization + return new Memoize(this, [this.books, this.stats]); + } + + async stats() { + console.log('Computing stats...'); + return { books: await this.books() }; + } + + async books() { + console.log('Loading books...'); + return await fetchBooksFromDatabase(); + } +} + +const site = new Website({ src: './content', dest: './dist' }); + +await site.stats(); // "Computing stats..." "Loading books..." (1.183ms) +await site.stats(); // Nothing logged (0.010ms) - 100x faster! +``` + +### Configuration Steps + +1. **Import the library**: + ```javascript + import { Memoize } from 'michie'; + ``` + +2. **Wrap your instance** in constructor return: + ```javascript + return new Memoize(this, methodsToCache, options); + ``` + +3. **Optional: Add plugins** for advanced features: + ```javascript + const memoized = new Memoize(this, methods); + memoized.use(new LeastRecentlyUsedEviction({ maxSize: 100 })); + ``` + +### Environment Variables +- **None required** - Pure in-memory caching by default +- Optional: PersistenceLayer plugin supports custom storage backends + +--- + +## 3. Architecture & Code Structure + +### 3.1 Directory Organization + +``` +michie/ +├── src/ +│ ├── index.js # Main entry point, exports all classes +│ ├── Memoize.js # Core memoization engine (301 lines) +│ └── plugins/ # Plugin system (10 plugins) +│ ├── CacheInvalidation.js # Auto-invalidate cache on mutations +│ ├── CacheWarming.js # Pre-populate cache +│ ├── ConditionalCaching.js # Conditional cache storage +│ ├── CustomKeySerialization.js # Custom cache key generation +│ ├── ErrorCachingControl.js # Error caching behavior +│ ├── HitMissStatistics.js # Performance metrics tracking +│ ├── LeastRecentlyUsedEviction.js # LRU/FIFO/LFU eviction +│ ├── NamespaceTags.js # Tag-based cache management +│ ├── PersistenceLayer.js # External storage integration +│ └── StaleWhileRevalidate.js # Serve stale, revalidate async +├── LICENSE # MIT License +├── package.json # Package metadata +└── README.md # Comprehensive documentation (14KB) +``` + +**Purpose of Key Directories**: +- `src/`: Source code directory containing all implementation +- `src/plugins/`: Modular plugin system for extending functionality +- Root: Package configuration and documentation + + +### 3.2 Module System + +**Type**: **ESM (ECMAScript Modules)** - Pure ES6 module format + +**Module Resolution**: +- Uses native ES6 `import`/`export` statements +- All imports require `.js` extension (ESM requirement) +- Example: `export { Memoize } from './Memoize.js';` + +**Barrel Exports**: +- `src/index.js` serves as the main barrel export file +- Re-exports all core classes and plugins from a single entry point + +**Circular Dependencies**: None detected - clean unidirectional dependency flow + +**Dependency Graph**: +``` +index.js (barrel) +├── Memoize.js (core) +└── plugins/* (independent, no inter-plugin dependencies) +``` + +### 3.3 Design Patterns + +**Architectural Patterns**: +1. **Proxy Pattern** - Core implementation uses JavaScript Proxy for transparent method interception +2. **Plugin Pattern** - Extensible architecture via plugin system with lifecycle hooks +3. **Decorator Pattern** - Methods are decorated with caching behavior +4. **Strategy Pattern** - Plugins implement different caching strategies (LRU, FIFO, LFU) +5. **Observer Pattern** - Event hooks system (`onCacheHit`, `onCacheMiss`, `beforeGet`, etc.) + +**Code Organization**: +- **Layered Architecture**: Clear separation between core engine and plugins +- **Single Responsibility**: Each plugin handles one specific concern +- **Open/Closed Principle**: Core is closed for modification, open for extension via plugins + +**Separation of Concerns**: +- **Core (`Memoize.js`)**: Cache management, proxy handling, method interception +- **Plugins**: Individual features (invalidation, eviction, persistence, metrics) +- **Entry Point (`index.js`)**: Simple barrel exports + +--- + +## 4. Core Features & API + +### 4.1 Feature Inventory + +Michie provides **11 major features** organized into core functionality and 10 plugins: + +#### Core Features (Memoize.js) + +1. **Basic Method Memoization** + - Cache parameterless methods + - Automatic getter memoization + - API: `new Memoize(target, [methods])` + +2. **Parameterized Method Caching** + - Automatic cache key generation from arguments + - Supports multiple argument combinations + - JSON-based argument serialization + +3. **Time-To-Live (TTL)** + - Per-method TTL configuration + - Automatic cache expiration + - API: `{ key: method, ttl: milliseconds }` + +4. **Async Method Support** + - Promise caching + - Prevents duplicate concurrent async calls + - Automatic error handling + +5. **Plugin System** + - Lifecycle hooks for extensibility + - API: `memoized.use(plugin)` + +#### Plugin Features + +6. **Cache Invalidation** (`CacheInvalidation`) + - Auto-invalidate cache when mutation methods are called + - Configuration: `invalidateOn: [methodNames]` + +7. **LRU/FIFO/LFU Eviction** (`LeastRecentlyUsedEviction`) + - Limit cache size with smart eviction strategies + - Supports LRU (Least Recently Used), FIFO (First In First Out), LFU (Least Frequently Used) + - API: `new LeastRecentlyUsedEviction({ maxSize: 100, strategy: 'lru' })` + +8. **Stale-While-Revalidate** (`StaleWhileRevalidate`) + - Serve cached data immediately while refreshing in background + - Configurable stale time + - API: `{ key: method, staleWhileRevalidate: true, staleTime: ms }` + +9. **Conditional Caching** (`ConditionalCaching`) + - Only cache results meeting specific criteria + - API: `{ key: method, cacheIf: (value) => boolean }` + +10. **Hit/Miss Statistics** (`HitMissStatistics`) + - Track cache performance metrics + - Hit rate, miss rate, evictions, response times + - Callbacks for real-time monitoring + +11. **Custom Key Serialization** (`CustomKeySerialization`) + - Custom cache key generation logic + - API: `{ key: method, keyFn: (args, prop) => string }` + +12. **Cache Warming** (`CacheWarming`) + - Pre-populate cache before requests arrive + - API: `memoized.warm([methods], argsMap)` + +13. **Namespace Tags** (`NamespaceTags`) + - Tag cache entries for group operations + - Clear by tag: `memoized.clearCacheByTag('users')` + +14. **Error Caching Control** (`ErrorCachingControl`) + - Control error caching behavior + - Separate TTL for errors + - API: `{ key: method, cacheErrors: true, errorTTL: ms }` + +15. **Persistence Layer** (`PersistenceLayer`) + - Save cache to external storage (Redis, file system, etc.) + - Async save/load operations + - API: Provide `save(key, value)` and `load(key)` functions + +### 4.2 API Documentation + +#### Core Class: `Memoize` + +**Constructor Signature**: +```javascript +new Memoize(target, keys, options) +``` + +**Parameters**: +- `target` (Object, **required**): The object instance to memoize +- `keys` (Array, **required**): Methods/properties to cache + - Can be: function reference, string name, or configuration object +- `options` (Object, optional): Default options applied to all keys + - `ttl` (Number): Default time-to-live in milliseconds + +**Return Value**: Proxy-wrapped target object with memoization + +**Example**: +```javascript +const memoized = new Memoize(this, [ + this.expensiveMethod, // Function reference + "propertyName", // String name + { key: this.fetch, ttl: 5000 } // Config object +], { ttl: 10000 }); // Default TTL +``` + + +--- + +## 5. Entry Points & Exports Analysis + +### 5.1 Package.json Entry Points + +```json +{ + "main": "src/index.js", + "type": "module" +} +``` + +**Entry Point Configuration**: +- **main**: `src/index.js` - Single entry point for both CommonJS and ESM +- **module**: Not specified (uses `main` for ESM via `"type": "module"`) +- **types**: Not specified - No TypeScript definitions included +- **exports**: Not specified - Uses simple `main` field only + +**Module Format**: Pure ESM - Package is ESM-only (no CommonJS support) + +### 5.2 Exports Map Analysis + +**Package does NOT use conditional exports.** It relies on the legacy `main` field with `"type": "module"`. + +**Impact**: +- Simple, straightforward entry point +- ESM-only - will NOT work in CommonJS environments +- No subpath exports - all imports must go through main entry + +**Import Options**: +```javascript +// Default import (imports Memoize class) +import { Memoize } from 'michie'; + +// Named imports for plugins +import { + Memoize, + CacheInvalidation, + LeastRecentlyUsedEviction, + StaleWhileRevalidate +} from 'michie'; +``` + +### 5.3 Exported Symbols Deep Dive + +#### Main Export: `src/index.js` + +**ALL Exports** (12 total): + +##### Core Class +1. **`Memoize`** (Class) + - **Purpose**: Main memoization engine + - **Type**: ES6 Class + - **Constructor**: `(target, keys, options)` + - **Methods**: + - `use(plugin)` - Add plugin + - `get _internal()` - Internal API for plugins + - **Returns**: Proxy-wrapped target + +##### Plugin Classes (10 total) +2. **`CacheInvalidation`** (Class) +3. **`LeastRecentlyUsedEviction`** (Class) +4. **`StaleWhileRevalidate`** (Class) +5. **`ConditionalCaching`** (Class) +6. **`HitMissStatistics`** (Class) +7. **`CustomKeySerialization`** (Class) +8. **`CacheWarming`** (Class) +9. **`NamespaceTags`** (Class) +10. **`ErrorCachingControl`** (Class) +11. **`PersistenceLayer`** (Class) + +**No constants, enums, or standalone functions are exported.** + +### 5.4 Entry Point Execution Flow + +**When you import michie:** + +```javascript +import { Memoize } from 'michie'; +``` + +**Execution Sequence**: +1. **Loads**: `src/index.js` +2. **Side Effects**: None - pure module, no initialization code runs +3. **Imports**: Loads `Memoize.js` and all plugin files +4. **Export Resolution**: Re-exports all classes +5. **Result**: Classes available for instantiation + +**No global state, no side effects, no automatic initialization.** + +--- + +## 6. Functionality Deep Dive + +### 6.1 Core Functionality Mapping + +``` +michie +├─ Memoization Engine (Memoize class) +│ ├─ Proxy-based Method Interception +│ ├─ Cache Management (Map-based) +│ ├─ TTL Expiration +│ ├─ Async Promise Handling +│ └─ Plugin Lifecycle Hooks +│ +├─ Cache Invalidation +│ └─ Auto-clear on mutation methods +│ +├─ Eviction Strategies +│ ├─ LRU (Least Recently Used) +│ ├─ FIFO (First In First Out) +│ └─ LFU (Least Frequently Used) +│ +├─ Performance Optimization +│ ├─ Stale-While-Revalidate +│ ├─ Cache Warming +│ └─ Conditional Caching +│ +├─ Observability +│ ├─ Hit/Miss Statistics +│ └─ Custom Event Callbacks +│ +├─ Advanced Features +│ ├─ Custom Key Serialization +│ ├─ Namespace Tags +│ ├─ Error Caching Control +│ └─ Persistence Layer +│ +└─ Plugin System + └─ Extensible lifecycle hooks +``` + +### 6.2 Data Flow Analysis + +**Input Sources**: +1. Constructor parameters (target object, method list, options) +2. Method calls on proxied object (runtime) +3. Plugin configurations +4. External storage (PersistenceLayer) + +**Processing Stages**: +1. **Configuration** → Parse method list, build config map +2. **Interception** → Proxy intercepts property access +3. **Cache Lookup** → Check if result exists in cache +4. **TTL Check** → Verify cache entry hasn't expired +5. **Execution** → If miss, execute original method +6. **Serialization** → Convert arguments to cache key +7. **Storage** → Save result in cache Map +8. **Plugin Hooks** → Trigger lifecycle events + +**Output Destinations**: +1. Return values (cached or fresh) +2. Cache Map (in-memory) +3. Plugin callbacks (metrics, logging) +4. External storage (optional persistence) + +**Data Flow Diagram**: +``` +Method Call + ↓ +Proxy Intercept + ↓ +Check Config → Not Configured → Return Original + ↓ Configured +beforeGet Hook + ↓ +Cache Lookup + ↓ +Hit? → Yes → onCacheHit Hook → Return Cached + ↓ No +onCacheMiss Hook + ↓ +Execute Method + ↓ +Handle Async? + ↓ +Store Result → afterSet Hook + ↓ +Return Result +``` + +### 6.3 State Management + +**State Storage Location**: In-memory JavaScript `Map` + +**State Structure**: +```javascript +cache: Map { + 'method:methodName:{"arg1":"value"}' => { + value: result, + timestamp: Date.now(), + expiresAt: Date.now() + ttl + } +} +``` + +**State Mutations**: +- `set`: Add new cache entry +- `get`: Retrieve cached value +- `delete`: Remove expired or invalidated entry +- Plugin modifications via `_internal` API + +**State Persistence**: Optional via PersistenceLayer plugin + +**State Cleanup**: +- Automatic on TTL expiration +- Manual via `clearCache()` methods +- Plugin-driven (LRU eviction) + +--- + +## 7. Dependencies & Data Flow + +### 7.1 Dependency Analysis + +**Production Dependencies**: **ZERO** ✅ + +The package has NO external dependencies, making it: +- Lightweight +- Secure (no supply chain risks) +- Easy to audit +- Fast to install + +**Dev Dependencies**: None specified + +**Peer Dependencies**: None + +**Optional Dependencies**: None + +**Bundled Dependencies**: None + +### 7.2 Dependency Graph + +``` +michie (0 dependencies) +└─ (none) +``` + +**This is a significant advantage** - no dependency bloat, no version conflicts, no security vulnerabilities from third-party code. + +### 7.3 Bundle Size Impact + +- **Total Package Size**: 12.8 kB (gzipped tarball) +- **Unpacked Size**: 42.7 kB +- **Tree-Shaking**: Excellent - ESM format allows tree-shaking unused plugins +- **Zero Dependencies**: No transitive dependency weight + +**Size Breakdown by File** (from repomix analysis): +1. README.md: 14 KB (30% - documentation, not bundled) +2. Memoize.js: 8.7 KB (19.3% - core engine) +3. Plugins: ~20 KB total (45%) +4. Other: ~5 KB + +**Estimated Bundle Impact**: ~10-15 KB minified (if using all features) + +--- + +## 8. Build & CI/CD Pipeline + +### Build Scripts + +**package.json scripts**: +```json +{ + "test": "echo \"Tests coming soon\" && exit 0" +} +``` + +**Build System**: None - Package ships source code directly (no transpilation) + +**Test Framework**: None currently - Tests are planned but not implemented + +**Linting**: Not configured + +**Formatting**: Not configured + +**CI/CD**: No GitHub Actions workflows detected + +### Publishing Workflow + +- **Manual publish** to NPM (no automated pipeline) +- **Version**: 1.0.0 (semantic versioning) +- **Files Published**: `src/`, `README.md`, `LICENSE` (via `files` field) + +--- + +## 9. Quality & Maintainability + +**Quality Score**: **6.5/10** + +**Strengths** ✅: +- Clean, well-structured code +- Extensive documentation (14KB README) +- Zero dependencies +- Modern ES6+ syntax +- Plugin architecture + +**Weaknesses** ⚠️: +- No tests (major concern) +- No TypeScript definitions +- No CI/CD pipeline +- No linting/formatting +- Limited adoption metrics (new package) +- No changelog + +**Test Coverage**: 0% (no tests) + +**Documentation Quality**: ⭐⭐⭐⭐ Excellent +- Comprehensive README with examples +- Clear API documentation +- Use case demonstrations +- Philosophy and background + +**Code Complexity**: Low-Medium +- Core class is ~300 lines +- Plugins are small and focused (50-150 lines each) +- Clear separation of concerns + +**Maintenance Status**: +- ✅ Active (v1.0.0 released recently) +- ⚠️ Single contributor (AI-generated) +- ⚠️ Unknown community support + +--- + +## 10. Security Assessment + +**Known Vulnerabilities**: None (0 dependencies = minimal attack surface) + +**Security Advisories**: None + +**License Compliance**: ✅ MIT License - permissive, no restrictions + +**Security Considerations**: +- ✅ No external dependencies +- ✅ No native code +- ✅ No network calls +- ⚠️ Stores sensitive data in memory (cache) +- ⚠️ No input sanitization (assumes trusted code) +- ⚠️ Proxy can capture all method calls (privacy consideration) + +**Recommendations**: +1. Add security policy (SECURITY.md) +2. Consider memory limits for cache (DOS prevention) +3. Document data privacy implications of caching +4. Add input validation for plugin configurations + +--- + +## 11. Integration & Usage Guidelines + +### Framework Compatibility + +**Compatible With**: +- ✅ Node.js >= 14.0.0 +- ✅ Modern browsers (ESM support required) +- ✅ Deno (ESM-native) +- ✅ Bun (ESM-native) +- ❌ CommonJS environments (requires ESM) +- ❌ Older Node.js versions (< 14) + +### Platform Support + +- **Server-side**: Node.js, Deno, Bun +- **Client-side**: Modern browsers with ESM support +- **Edge**: Cloudflare Workers, Vercel Edge, Deno Deploy + +### Integration Examples + +#### With Express.js + +```javascript +import express from 'express'; +import { Memoize, LeastRecentlyUsedEviction } from 'michie'; + +class UserService { + constructor() { + const memoized = new Memoize(this, [ + { key: this.fetchUser, ttl: 60000 } + ]); + memoized.use(new LeastRecentlyUsedEviction({ maxSize: 100 })); + return memoized; + } + + async fetchUser(id) { + // Expensive database query + return await db.users.findById(id); + } +} + +const service = new UserService(); +app.get('/users/:id', async (req, res) => { + const user = await service.fetchUser(req.params.id); + res.json(user); +}); +``` + +#### With React (Server Components) + +```javascript +import { Memoize } from 'michie'; + +class DataFetcher { + constructor() { + return new Memoize(this, [this.fetchPosts]); + } + + async fetchPosts() { + const res = await fetch('https://api.example.com/posts'); + return res.json(); + } +} + +const fetcher = new DataFetcher(); + +export default async function PostsPage() { + const posts = await fetcher.fetchPosts(); // Cached! + return
{posts.map(post => ...)}
; +} +``` + +### Common Use Cases + +1. **API Response Caching** - Cache external API calls +2. **Database Query Caching** - Reduce database load +3. **Expensive Computations** - Fibonacci, data transformations +4. **Static Site Generation** - Cache file reads, markdown parsing +5. **Microservices** - Cache service-to-service calls + +--- + +## 12. Recommendations + +### For Package Maintainers + +1. **HIGH PRIORITY**: + - ✅ Add comprehensive test suite (Jest/Vitest) + - ✅ Add TypeScript definitions (.d.ts files) + - ✅ Set up CI/CD (GitHub Actions) + - ✅ Add linting (ESLint) and formatting (Prettier) + +2. **MEDIUM PRIORITY**: + - Add changelog (CHANGELOG.md) + - Add contributing guidelines + - Add security policy + - Add code of conduct + - Improve package.json with more metadata + +3. **LOW PRIORITY**: + - Add examples directory + - Add benchmarks + - Add browser build (UMD) + - Add CDN support + +### For Developers Considering This Package + +**Use Michie If**: +- ✅ You need simple, elegant memoization +- ✅ You want zero dependencies +- ✅ You value extensibility (plugins) +- ✅ You're building Node.js >= 14 or modern browsers +- ✅ You need advanced caching strategies (LRU, stale-while-revalidate) + +**Avoid Michie If**: +- ❌ You need CommonJS support +- ❌ You require TypeScript definitions +- ❌ You need battle-tested, widely-adopted solution +- ❌ You need synchronous-only caching (this supports async) +- ❌ You're in an old Node.js environment + +**Alternatives**: +- `memoizee` - More mature, CommonJS support +- `p-memoize` - Focused on promise memoization +- `fast-memoize` - Performance-focused +- `lru-cache` - Just LRU caching + +--- + +## 13. Conclusion + +**Michie** is a **well-designed**, **zero-dependency** memoization library that brings intelligent caching to JavaScript applications. Its **plugin architecture** and **clean API** make it stand out from traditional memoization libraries. + +**Key Highlights**: +- 🎯 **Elegant Design**: Single-line integration with powerful features +- 🔌 **Highly Extensible**: 10 plugins for advanced scenarios +- ⚡ **Zero Dependencies**: Minimal security risk, fast install +- 🧠 **Intelligent**: Automatic key generation, TTL, async support +- 📦 **Lightweight**: Only 12.8 kB + +**Main Concerns**: +- No test coverage (critical gap) +- No TypeScript definitions +- Limited community adoption (new package) +- ESM-only (no CommonJS) + +**Final Verdict**: **7/10** - Promising library with excellent design, but needs production hardening (tests, types, adoption). + +**Recommendation**: **Suitable for** experimental projects and modern ESM environments. **Wait for** v1.1+ with tests and TypeScript before production use in critical systems. + +--- + +**Generated by**: Codegen NPM Analysis Agent +**Analysis Date**: 2025-12-28 +**Analysis Duration**: Comprehensive +**Package Version Analyzed**: 1.0.0