ThoughtMCP

# Build System Guide ## Overview ThoughtMCP uses a comprehensive build system that enforces all quality standards automatically. The build process includes security auditing, code formatting, linting, type checking, and complete test suite execution before creating production artifacts. ## Build Commands ### Production Build (Recommended) ```bash npm run build ``` **What it does:** 1. **Clean** - Removes all build artifacts (`dist/`, `coverage/`, `.vitest/`) 2. **Format** - Auto-formats all code with Prettier 3. **Security Audit** - Checks for moderate+ severity vulnerabilities 4. **Format Check** - Verifies code formatting is correct 5. **Lint** - Runs ESLint on all TypeScript files 6. **Type Check** - Verifies TypeScript types with zero errors 7. **Test** - Runs complete test suite (unit, integration, e2e) 8. **Build Types** - Generates TypeScript declaration files 9. **Build Bundle** - Creates optimized production bundle with esbuild **Build fails if ANY step fails.** This ensures zero technical debt and production-ready code. ### Quick Build (Skip Validation) ```bash npm run build:quick ``` **What it does:** 1. Clean build artifacts 2. Generate TypeScript declarations 3. Create production bundle **Use only when:** - You've already run `npm run validate` successfully - You're iterating on build configuration - You need a fast rebuild during development **⚠️ Warning:** This skips all quality gates. Always run full build before committing. ### Individual Build Steps ```bash # Clean build artifacts npm run clean # Generate TypeScript declarations only npm run build:types # Create production bundle only npm run build:bundle # Watch mode for development npm run build:watch ``` ## Quality Gates ### 1. Security Audit ```bash npm run audit:check ``` - Checks for npm package vulnerabilities - Fails on moderate or higher severity - Must have **0 vulnerabilities** to pass **Fix vulnerabilities:** ```bash # Update vulnerable packages npm audit fix # Or update specific package npm install package@latest --save-dev ``` ### 2. Code Formatting ```bash # Auto-format all code npm run format # Check formatting without changes npm run format:check ``` - Uses Prettier for consistent code style - Formats TypeScript, JavaScript, JSON, and Markdown - Build automatically formats code before validation **Configuration:** `.prettierrc` and `.prettierignore` ### 3. Linting ```bash # Run ESLint npm run lint # Auto-fix linting issues npm run lint:fix ``` - Enforces code quality and style rules - Zero tolerance for errors and warnings - Checks TypeScript-specific rules **Key Rules:** - No `any` types - No `@ts-ignore` or `@ts-expect-error` - Prefer nullish coalescing (`??`) over logical OR (`||`) - Explicit function return types - No floating promises - No unused variables **Configuration:** `eslint.config.js` ### 4. Type Checking ```bash npm run typecheck ``` - Verifies TypeScript types without emitting files - Must have **0 errors and 0 warnings** - Checks all files in `src/` **Configuration:** `tsconfig.json` ### 5. Testing ```bash # Run all tests npm test # Run with coverage npm run test:coverage # Run specific test types npm run test:unit npm run test:integration npm run test:e2e ``` - Runs complete test suite with Vitest - Must have **100% pass rate** - Requires **75%+ coverage** for lines, branches, functions, and statements **See:** [Testing Guide](testing.md) for details ## Build Output ### Directory Structure ``` dist/ ├── index.js # Main entry point (bundled) ├── index.js.map # Source map ├── index.d.ts # Type declarations (main) ├── cognitive/ # Cognitive components │ ├── index.js │ ├── index.d.ts │ └── ... ├── server/ # MCP server │ ├── CognitiveMCPServer.js │ ├── CognitiveMCPServer.d.ts │ └── ... └── utils/ # Utilities ├── index.js ├── index.d.ts └── ... ``` ### Bundle Characteristics - **Minified**: Production code is minified for smaller size - **Source Maps**: Included for debugging - **Type Declarations**: Full TypeScript definitions - **Executable**: Main entry point has execute permissions - **ES Modules**: Uses modern ES module format ### Bundle Size Current bundle sizes (optimized with esbuild): - **index.js**: 1.2 KB (minified) - **index.js.map**: 3.4 KB (source map) - **index.d.ts**: 297 B (type declarations) - **Total**: ~4.9 KB **Optimization Results:** - 50% size reduction through minification - Tree-shaking removes unused code - Fast builds (~15ms for current codebase) ## Build Configuration ### esbuild Configuration Located in `scripts/build.mjs`: ```javascript { entryPoints: ['src/index.ts'], bundle: true, platform: 'node', target: 'node18', format: 'esm', outdir: 'dist', sourcemap: true, minify: true, external: ['@modelcontextprotocol/sdk'] } ``` ### TypeScript Configuration Located in `tsconfig.json`: ```json { "compilerOptions": { "target": "ES2022", "module": "ESNext", "moduleResolution": "bundler", "strict": true, "declaration": true, "declarationMap": true, "outDir": "dist" } } ``` ## Continuous Integration ### GitHub Actions Workflow ```yaml name: CI on: [push, pull_request] jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v3 - uses: actions/setup-node@v3 with: node-version: "18" - run: npm ci - run: npm run validate:ci ``` ### CI Validation ```bash npm run validate:ci ``` **What it does:** 1. Security audit 2. Format check 3. Lint 4. Type check 5. Quick build (without re-validation) 6. Test suite ## Troubleshooting ### Build Fails on Security Audit **Problem:** Moderate or higher severity vulnerabilities found **Solution:** ```bash # Check vulnerabilities npm audit # Fix automatically npm audit fix # Or update specific package npm install package@latest --save-dev # Rebuild npm run build ``` ### Build Fails on Formatting **Problem:** Code formatting doesn't match Prettier rules **Solution:** ```bash # Auto-format all code npm run format # Rebuild npm run build ``` ### Build Fails on Linting **Problem:** ESLint errors or warnings **Solution:** ```bash # Try auto-fix npm run lint:fix # If auto-fix doesn't work, manually fix errors # Check error messages for specific issues # Rebuild npm run build ``` ### Build Fails on Type Checking **Problem:** TypeScript type errors **Solution:** ```bash # Run type check to see errors npm run typecheck # Fix type errors in source code # Common issues: # - Missing return types # - Using 'any' type # - Type mismatches # Rebuild npm run build ``` ### Build Fails on Tests **Problem:** Test failures **Solution:** ```bash # Run tests to see failures npm test # Run specific test file npm test -- src/__tests__/path/to/test.test.ts # Fix failing tests # See Testing Guide for details # Rebuild npm run build ``` ### Build is Slow **Problem:** Build takes too long **Solutions:** 1. **Use Quick Build During Development:** ```bash npm run build:quick ``` 2. **Use Watch Mode:** ```bash npm run build:watch ``` 3. **Skip Tests During Iteration:** ```bash npm run clean npm run format npm run lint npm run typecheck npm run build:quick ``` 4. **Run Full Build Before Commit:** ```bash npm run build ``` ## Best Practices ### Before Committing Always run full build: ```bash npm run build ``` This ensures: - No security vulnerabilities - Code is properly formatted - No linting errors - No type errors - All tests pass - Build artifacts are up to date ### During Development Use quick iteration cycle: ```bash # Make changes npm run dev # Run tests in watch mode npm run test:watch # When ready, run full build npm run build ``` ### Before Pull Request Run CI validation: ```bash npm run validate:ci ``` This matches what CI will run and catches issues early. ### After Pulling Changes Rebuild to ensure dependencies and build artifacts are up to date: ```bash npm install npm run build ``` ## Performance Optimization ### Build Performance Current build times: - **Full Build**: ~10-15 seconds (with all quality gates) - **Quick Build**: ~1-2 seconds (skip validation) - **Type Generation**: <1 second - **Bundle Creation**: ~15ms (esbuild) ### esbuild Optimization ThoughtMCP uses esbuild for production builds: **Features:** - **Minification**: Removes whitespace, shortens names (~50% reduction) - **Tree-shaking**: Removes unused code automatically - **Bundling**: Combines modules for optimal loading - **Source maps**: Enables debugging of minified code **Configuration:** ```javascript { platform: "node", target: "node18", format: "esm", bundle: true, minify: true, sourcemap: true, treeShaking: true } ``` ### Optimization Tips 1. **Use Quick Build for Iteration:** - Run `npm run build:quick` during development - Run full build before commits 2. **Use Watch Mode:** - `npm run build:watch` for continuous type checking - `npm run test:watch` for continuous testing 3. **Optimize Imports:** ```typescript // Good: Import only what you need import { specificFunction } from "./utils"; // Bad: Import everything import * as utils from "./utils"; ``` 4. **Keep Dependencies Minimal:** - Review package.json regularly - Remove unused dependencies - Use peer dependencies when appropriate 5. **Parallel Execution:** - Tests run in parallel automatically - Build steps run sequentially for reliability 6. **Caching:** - npm caches dependencies - TypeScript caches type information - Vitest caches test results ## Zero Technical Debt Policy The build system enforces zero technical debt: ❌ **Build FAILS if:** - Security vulnerabilities exist (moderate+) - Code is not formatted - Linting errors or warnings exist - TypeScript errors or warnings exist - Any test fails - Coverage is below 75% for any metric ✅ **Build SUCCEEDS only if:** - 0 security vulnerabilities - All code properly formatted - 0 linting errors/warnings - 0 TypeScript errors/warnings - 100% test pass rate - 75%+ coverage for lines, branches, functions, and statements This ensures production-ready code at all times. ## Related Documentation - **[Development Guide](development.md)** - Complete development workflow - **[Testing Guide](testing.md)** - TDD principles and test utilities - **[Database Guide](database.md)** - PostgreSQL setup and configuration - **[Environment Guide](environment.md)** - Environment variables and configuration --- **Last Updated**: December 2025 **Version**: 0.5.0