feat: Add enhanced PR analysis features v0.2.0

CHANGELOG.md

@@ -0,0 +1,49 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.2.0] - 2025-12-22
+
+### Added
+
+- **Test Suggestions**: Automatically detects code changes without corresponding tests and generates copyable test templates
+  - Supports Jest, Mocha, Vitest, pytest, and unittest frameworks
+  - Auto-detects testing framework from project configuration
+  - Suggests appropriate test file paths based on project structure
+
+- **Coverage Reporting**: Reports test coverage percentage when a coverage tool is configured
+  - Supports Jest/NYC JSON, lcov, and Cobertura XML formats
+  - Only runs when coverage tool is detected in project (per user preference)
+  - Shows overall percentage, line coverage, and branch coverage
+
+- **DevOps Cost Estimation**: Estimates AWS infrastructure costs for DevOps-related changes
+  - Detects Terraform, CloudFormation, CDK, Pulumi, Docker, and Kubernetes files
+  - Built-in pricing data for EC2, Lambda, S3, RDS, ECS, ALB, NAT Gateway, and more
+  - Shows confidence level for each estimate
+
+- **Enhanced CLI Output**: New sections in `pr-agent analyze` output
+  - 🧪 Test Suggestions section with copyable test code
+  - 📊 Coverage Report section with percentage and file breakdown
+  - 💰 AWS Cost Estimates section with monthly cost impact
+
+- **Smart Change Detection**: Agent automatically shows only relevant outputs
+  - Categorizes files as code, test, or DevOps
+  - Code without tests → Shows test suggestions
+  - Terraform/CloudFormation → Shows cost estimates
+  - Coverage tool configured → Shows coverage report
+
+### New Files
+
+- `src/tools/test-suggestion-tool.ts` - Test framework detection and test generation
+- `src/tools/coverage-reporter.ts` - Coverage report parsing and formatting
+- `src/tools/devops-cost-estimator.ts` - IaC file detection and AWS cost estimation
+
+### Changed
+
+- `src/types/agent.types.ts` - Added `CodeSuggestion`, `TestSuggestion`, `DevOpsCostEstimate`, and `CoverageReport` interfaces
+- `src/tools/index.ts` - Exports for new tools
+- `src/cli/commands/analyze.command.ts` - Display sections for new features
+

dist/agents/base-pr-agent-workflow.d.ts

@@ -54,6 +54,10 @@ export declare abstract class BasePRAgentWorkflow {
      * Fast path execution - skip refinement loop but still use LLM for detailed analysis
      */
     private executeFastPath;
+    /**
+     * Smart change detection - analyzes files and returns only relevant enhanced features
+     */
+    private detectAndAnalyzeChangeTypes;
     private analyzeFilesNode;
     private detectRisksNode;
     private calculateComplexityNode;

dist/tools/coverage-reporter.d.ts

@@ -0,0 +1,40 @@
+/**
+ * Coverage Reporter Tool for PR Analysis
+ * Reads coverage reports and extracts metrics when coverage tool is configured
+ */
+import { DynamicStructuredTool } from '@langchain/core/tools';
+import { z } from 'zod';
+import { CoverageReport } from '../types/agent.types.js';
+/**
+ * Detect if coverage tool is configured in the project
+ */
+export declare function detectCoverageTool(repoPath?: string): {
+    tool: string | null;
+    configured: boolean;
+    coveragePath?: string;
+};
+/**
+ * Find existing coverage report files
+ */
+export declare function findCoverageFiles(repoPath?: string): string[];
+/**
+ * Read and parse coverage report
+ */
+export declare function readCoverageReport(repoPath?: string): CoverageReport;
+/**
+ * Create coverage reporter tool
+ */
+export declare function createCoverageReporterTool(): DynamicStructuredTool<z.ZodObject<{
+    repoPath: z.ZodOptional<z.ZodString>;
+    forceRead: z.ZodOptional<z.ZodBoolean>;
+}, z.core.$strip>, {
+    repoPath?: string;
+    forceRead?: boolean;
+}, {
+    repoPath?: string | undefined;
+    forceRead?: boolean | undefined;
+}, string>;
+/**
+ * Format coverage report for display
+ */
+export declare function formatCoverageReport(report: CoverageReport): string;