What problem does it solve?
JavaScript projects often accumulate bugs, inconsistent patterns, and performance issues when codebases evolve without disciplined async handling, module conventions, and error management.
Core Features & Use Cases
- Modern ES2023+ Implementation: Produce vanilla JavaScript using current language features (e.g., optional chaining, nullish coalescing) with ESM-first module structure.
- Robust Async/Promise Patterns: Implement async/await flows with explicit try/catch error handling and no unhandled Promise rejections.
- Maintainable Node.js & Browser API Code: Structure Node services and browser logic (including Fetch and Web Workers) with clear exports, JSDoc where needed, and performance-aware practices.
- Quality Gate by Testing & Validation: Lint for correctness, run comprehensive tests (Jest, 85%+ target coverage), and verify memory/performance characteristics before finalizing changes.
Quick Start
Use javascript-pro to refactor a Node.js module that mixes module styles and has unhandled async errors, then add Jest tests to reach at least 85% coverage.
