ng-lens
A Node.js tool that statically analyzes Angular components to detect service usage patterns and routing information from any API library.
Overview
NgLens is a static analysis tool for Angular applications that examines TypeScript components to identify service dependencies and method usage. It helps developers understand API consumption, plan refactoring, and map component relationships in large codebases.
Key Features
- Service Injection Detection — Identifies services from specified API libraries injected via Angular constructor dependency injection.
- Method Usage Tracking — Analyzes component code to track which service methods are actually called.
- Routing Analysis — Scans Angular routing modules to extract component, full path, menu ID, and import path data.
- Scalable Architecture — Class-based design capable of analyzing thousands of files efficiently.
- Structured JSON Output — Provides clean, formatted output suitable for integration with other tools.
- Configurable Analysis — Allows customization of target modules and source file patterns.
Architecture
NgLens follows a modular, class-based architecture adhering to the Single Responsibility Principle. Key components include the AngularAnalyzer orchestrator, ImportAnalyzer for detecting injections, ServiceUsageAnalyzer for method call tracking, RoutingAnalyzer for route parsing, and ReportGenerator for output formatting.
Philosophy
NgLens is designed to provide deep, actionable insights into Angular codebases through static analysis, enabling better understanding of API usage and component dependencies without runtime overhead.
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