|
| 1 | +# Nx Optimizations Applied |
| 2 | + |
| 3 | +## Summary |
| 4 | + |
| 5 | +Based on Perplexity's advice, we've implemented comprehensive Nx optimizations for the IFLA Standards Docusaurus monorepo. These optimizations significantly improve build performance, caching efficiency, and task orchestration. |
| 6 | + |
| 7 | +## ✅ **Optimizations Implemented** |
| 8 | + |
| 9 | +### 1. **Task Dependency Orchestration (`dependsOn` rules)** |
| 10 | + |
| 11 | +#### **Global Configuration (nx.json)** |
| 12 | +```json |
| 13 | +{ |
| 14 | + "build": { |
| 15 | + "dependsOn": ["^build"], // Dependencies build first |
| 16 | + "outputs": ["{projectRoot}/build", "{projectRoot}/dist", "{projectRoot}/.docusaurus"], |
| 17 | + "cache": true |
| 18 | + }, |
| 19 | + "test": { |
| 20 | + "dependsOn": ["^build"], // Tests run after dependencies are built |
| 21 | + "outputs": ["{projectRoot}/coverage", "{projectRoot}/test-results"] |
| 22 | + }, |
| 23 | + "typecheck": { |
| 24 | + "dependsOn": ["^build"], // TypeCheck after dependencies built |
| 25 | + "cache": true |
| 26 | + } |
| 27 | +} |
| 28 | +``` |
| 29 | + |
| 30 | +#### **Project-Specific Dependencies** |
| 31 | +- **Theme Package**: `typecheck` depends on `^build` |
| 32 | +- **Portal**: `typecheck` depends on `^build`, ensuring theme is built first |
| 33 | +- **Standards Sites**: `typecheck` depends on `^build` |
| 34 | + |
| 35 | +**Result**: Theme library always builds before dependent Docusaurus sites. |
| 36 | + |
| 37 | +### 2. **Explicit Outputs Configuration** |
| 38 | + |
| 39 | +#### **Before** |
| 40 | +```json |
| 41 | +// Missing outputs led to poor caching |
| 42 | +"build": { |
| 43 | + "cache": true |
| 44 | +} |
| 45 | +``` |
| 46 | + |
| 47 | +#### **After** |
| 48 | +```json |
| 49 | +// Explicit outputs enable remote caching and artifact sharing |
| 50 | +"build": { |
| 51 | + "outputs": ["{projectRoot}/build", "{projectRoot}/dist", "{projectRoot}/.docusaurus"], |
| 52 | + "cache": true |
| 53 | +} |
| 54 | +``` |
| 55 | + |
| 56 | +**Applied to**: |
| 57 | +- Global build target |
| 58 | +- Global test target (coverage, test-results) |
| 59 | +- Project-specific E2E targets |
| 60 | + |
| 61 | +### 3. **Enhanced Input Specifications** |
| 62 | + |
| 63 | +#### **Test Targets** |
| 64 | +```json |
| 65 | +"test": { |
| 66 | + "inputs": [ |
| 67 | + "default", |
| 68 | + "{projectRoot}/src/**/*.{test,spec}.{js,ts,jsx,tsx}", |
| 69 | + "{workspaceRoot}/vite.config.ts", |
| 70 | + "{workspaceRoot}/vitest.config.*" |
| 71 | + ] |
| 72 | +} |
| 73 | +``` |
| 74 | + |
| 75 | +#### **TypeCheck Targets** |
| 76 | +```json |
| 77 | +"typecheck": { |
| 78 | + "inputs": [ |
| 79 | + "default", |
| 80 | + "{projectRoot}/tsconfig.json", |
| 81 | + "{workspaceRoot}/tsconfig.json" |
| 82 | + ] |
| 83 | +} |
| 84 | +``` |
| 85 | + |
| 86 | +**Result**: More precise cache invalidation and better caching efficiency. |
| 87 | + |
| 88 | +### 4. **Missing TypeCheck Targets Added** |
| 89 | + |
| 90 | +Added `typecheck` targets to projects that were missing them: |
| 91 | +- **Portal** (`portal/project.json`) |
| 92 | +- **ISBDM** (`standards/ISBDM/project.json`) |
| 93 | + |
| 94 | +Pattern can be replicated to other standards sites: |
| 95 | +```json |
| 96 | +"typecheck": { |
| 97 | + "executor": "nx:run-commands", |
| 98 | + "options": { |
| 99 | + "command": "tsc --noEmit", |
| 100 | + "cwd": "{projectRoot}" |
| 101 | + }, |
| 102 | + "cache": true, |
| 103 | + "dependsOn": ["^build"], |
| 104 | + "inputs": [ |
| 105 | + "default", |
| 106 | + "{projectRoot}/tsconfig.json", |
| 107 | + "{workspaceRoot}/tsconfig.json" |
| 108 | + ] |
| 109 | +} |
| 110 | +``` |
| 111 | + |
| 112 | +### 5. **Improved Caching Configuration** |
| 113 | + |
| 114 | +#### **Global Named Inputs** |
| 115 | +Already excellent configuration with: |
| 116 | +- `docusaurus`: Includes theme dependency |
| 117 | +- `docusaurus-no-theme`: For projects not using theme |
| 118 | +- `production`: Excludes test files appropriately |
| 119 | + |
| 120 | +#### **Enhanced Test Caching** |
| 121 | +```json |
| 122 | +"test": { |
| 123 | + "dependsOn": ["^build"], |
| 124 | + "cache": true, |
| 125 | + "outputs": ["{projectRoot}/coverage", "{projectRoot}/test-results"], |
| 126 | + "inputs": [ |
| 127 | + "default", |
| 128 | + "{projectRoot}/test/**/*", |
| 129 | + "{projectRoot}/**/*.test.{js,ts,jsx,tsx}", |
| 130 | + "{projectRoot}/**/*.spec.{js,ts,jsx,tsx}", |
| 131 | + "{workspaceRoot}/vite.config.ts", |
| 132 | + "{workspaceRoot}/vitest.config.*" |
| 133 | + ] |
| 134 | +} |
| 135 | +``` |
| 136 | + |
| 137 | +## 🚀 **Performance Benefits** |
| 138 | + |
| 139 | +### **Build Sequence Optimization** |
| 140 | +```mermaid |
| 141 | +graph LR |
| 142 | + A[@ifla/theme:build] --> B[portal:typecheck] |
| 143 | + A --> C[isbdm:typecheck] |
| 144 | + A --> D[Other sites:typecheck] |
| 145 | + E[parallel execution] --> B & C & D |
| 146 | +``` |
| 147 | + |
| 148 | +### **Caching Improvements** |
| 149 | +- **Input-based cache invalidation**: Only affected projects rebuild |
| 150 | +- **Output caching**: Built artifacts shared across environments |
| 151 | +- **Remote caching ready**: Nx Cloud optimization enabled |
| 152 | + |
| 153 | +### **Dependency Management** |
| 154 | +- **Automatic orchestration**: Theme builds before sites |
| 155 | +- **Parallel execution**: Independent tasks run simultaneously |
| 156 | +- **Smart scheduling**: Nx optimizes resource utilization |
| 157 | + |
| 158 | +## 📊 **Expected Performance Gains** |
| 159 | + |
| 160 | +### **Build Times** |
| 161 | +- **Theme changes**: All sites rebuild (necessary) |
| 162 | +- **Site-specific changes**: Only affected sites rebuild |
| 163 | +- **Configuration changes**: Smart invalidation based on inputs |
| 164 | + |
| 165 | +### **Development Workflow** |
| 166 | +- **`pnpm typecheck`**: Now orchestrates dependencies properly |
| 167 | +- **`pnpm test`**: Ensures dependencies built before testing |
| 168 | +- **`pnpm build:affected`**: Optimal build order automatically |
| 169 | + |
| 170 | +### **CI Performance** |
| 171 | +- **Better caching**: Explicit outputs enable artifact reuse |
| 172 | +- **Reduced redundancy**: Smart dependency management |
| 173 | +- **Parallel optimization**: Maximum resource utilization |
| 174 | + |
| 175 | +## 🔧 **Technical Implementation** |
| 176 | + |
| 177 | +### **Key Nx Features Leveraged** |
| 178 | + |
| 179 | +1. **Task Pipeline Configuration**: `dependsOn` rules ensure correct build order |
| 180 | +2. **Input/Output Specification**: Precise caching and invalidation |
| 181 | +3. **Named Inputs**: Reusable input patterns across projects |
| 182 | +4. **Implicit Dependencies**: Theme package dependency management |
| 183 | +5. **Affected Detection**: Only build/test what changed |
| 184 | + |
| 185 | +### **Docusaurus-Specific Optimizations** |
| 186 | + |
| 187 | +1. **Theme Dependency**: All sites depend on `@ifla/theme` build |
| 188 | +2. **Docusaurus Inputs**: Include `.docusaurus`, `build`, `static` directories |
| 189 | +3. **Port Management**: Each site has unique port configuration |
| 190 | +4. **Configuration Isolation**: `docusaurus-no-theme` for self-contained sites |
| 191 | + |
| 192 | +## 🏗️ **Monorepo Architecture Benefits** |
| 193 | + |
| 194 | +### **Shared Theme Package** |
| 195 | +- **Single build**: Theme builds once, used by all sites |
| 196 | +- **Dependency management**: Automatic rebuild when theme changes |
| 197 | +- **Version consistency**: All sites use same theme version |
| 198 | + |
| 199 | +### **Independent Sites** |
| 200 | +- **Isolated builds**: Each site builds independently when possible |
| 201 | +- **Shared dependencies**: Common packages cached and reused |
| 202 | +- **Parallel execution**: Sites build simultaneously when dependencies met |
| 203 | + |
| 204 | +## 📋 **Next Steps for Full Optimization** |
| 205 | + |
| 206 | +### **Apply to All Standards Sites** |
| 207 | +Replicate the optimizations applied to ISBDM to: |
| 208 | +- `standards/LRM/project.json` |
| 209 | +- `standards/FRBR/project.json` |
| 210 | +- `standards/isbd/project.json` |
| 211 | +- `standards/muldicat/project.json` |
| 212 | +- `standards/unimarc/project.json` |
| 213 | + |
| 214 | +### **Template Pattern** |
| 215 | +Consider creating a project template for standards sites to reduce duplication: |
| 216 | +```bash |
| 217 | +nx g @nx/workspace:lib-executors standards-template |
| 218 | +``` |
| 219 | + |
| 220 | +### **Remote Caching** |
| 221 | +Your Nx Cloud is already configured (`nxCloudId: "6857fccbb755d4191ce6fbe4"`): |
| 222 | +- Enables artifact sharing across team/CI |
| 223 | +- Speeds up builds through remote cache hits |
| 224 | +- Reduces CI compute costs |
| 225 | + |
| 226 | +## ✅ **Verification** |
| 227 | + |
| 228 | +The optimizations are working correctly as demonstrated by: |
| 229 | + |
| 230 | +```bash |
| 231 | +pnpm typecheck |
| 232 | +# Result: |
| 233 | +# 1. @ifla/theme:build runs first |
| 234 | +# 2. portal:typecheck, isbdm:typecheck run in parallel after theme builds |
| 235 | +# 3. Proper dependency orchestration achieved |
| 236 | +``` |
| 237 | + |
| 238 | +These optimizations align perfectly with Perplexity's recommendations and leverage Nx's advanced features for optimal Docusaurus monorepo performance. |
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