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Developer Quality Standards

BMAD Method Documentation

Introduction

This document defines the quality standards for developers working within the BMAD Method framework. These standards ensure consistent, maintainable, and high-quality code across all projects. The standards are designed to be measurable, actionable, and aligned with industry best practices.

Quality Dimensions

Developer quality is measured across six key dimensions, each with a specific weight in the overall quality assessment:

Dimension Weight Description
Code Quality 25% Structural quality of the code itself
Functionality 20% Correctness and completeness of implementation
Performance 15% Efficiency and responsiveness
Maintainability 15% Ease of understanding and modifying code
Testing 15% Test coverage and quality
Documentation 10% Completeness and clarity of documentation

Quality Standards by Dimension

1. Code Quality (25%)

1.1 Code Structure

  • Standard: Code follows the project's architectural patterns and design principles
  • Measurement: Automated static analysis tools and manual review
  • Threshold: No critical or high-severity structural issues

1.2 Code Complexity

  • Standard: Functions and components maintain reasonable complexity
  • Measurement: Cyclomatic complexity < 15, cognitive complexity < 10
  • Threshold: 90% of code meets complexity targets

1.3 Code Duplication

  • Standard: Minimal code duplication across the codebase
  • Measurement: Automated duplication detection
  • Threshold: < 5% duplication

1.4 Coding Standards Compliance

  • Standard: Code adheres to project style guide and linting rules
  • Measurement: Automated linting
  • Threshold: Zero linting errors, < 5 warnings

1.5 Clean Code Principles

  • Standard: Code follows clean code principles (meaningful names, single responsibility, etc.)
  • Measurement: Manual review using clean code checklist
  • Threshold: 90% compliance with clean code checklist

2. Functionality (20%)

2.1 Requirements Fulfillment

  • Standard: Implementation meets all specified requirements
  • Measurement: Requirements traceability matrix
  • Threshold: 100% of requirements implemented correctly

2.2 Error Handling

  • Standard: Robust error handling for all operations
  • Measurement: Error scenario testing and code review
  • Threshold: All identified error scenarios handled appropriately

2.3 Edge Case Handling

  • Standard: Code handles edge cases and boundary conditions
  • Measurement: Edge case test coverage
  • Threshold: All identified edge cases handled correctly

2.4 Accessibility Compliance

  • Standard: Implementation meets accessibility requirements
  • Measurement: Automated accessibility testing and manual review
  • Threshold: WCAG 2.1 AA compliance

2.5 Cross-browser/Cross-device Compatibility

  • Standard: Code works consistently across required platforms
  • Measurement: Cross-platform testing
  • Threshold: Consistent behavior across all specified platforms

3. Performance (15%)

3.1 Rendering Performance

  • Standard: UI renders and updates efficiently
  • Measurement: Render timing metrics
  • Threshold: Initial render < 200ms, updates < 50ms

3.2 Memory Usage

  • Standard: Efficient memory usage without leaks
  • Measurement: Memory profiling
  • Threshold: No memory leaks, memory usage within defined limits

3.3 Network Efficiency

  • Standard: Efficient network resource usage
  • Measurement: Network request count, payload size, caching
  • Threshold: Meets project-specific network performance budgets

3.4 Bundle Size

  • Standard: Optimized bundle size
  • Measurement: Bundle analysis
  • Threshold: Meets project-specific bundle size budgets

3.5 Algorithm Efficiency

  • Standard: Efficient algorithms and data structures
  • Measurement: Performance profiling and complexity analysis
  • Threshold: O(n) or better for common operations where possible

4. Maintainability (15%)

4.1 Code Readability

  • Standard: Code is easy to read and understand
  • Measurement: Manual review using readability checklist
  • Threshold: 90% compliance with readability standards

4.2 Modularity

  • Standard: Code is properly modularized with clear boundaries
  • Measurement: Module coupling and cohesion metrics
  • Threshold: High cohesion, low coupling across modules

4.3 Extensibility

  • Standard: Code can be extended without significant modification
  • Measurement: Manual review of extension points
  • Threshold: Key extension points identified and implemented

4.4 Configuration vs. Hardcoding

  • Standard: Configurable elements are not hardcoded
  • Measurement: Hardcoded value detection
  • Threshold: No business rules or configurable values hardcoded

4.5 Technical Debt

  • Standard: Minimal technical debt in implementation
  • Measurement: Technical debt tracking tools
  • Threshold: Technical debt ratio < 5%

5. Testing (15%)

5.1 Test Coverage

  • Standard: Comprehensive test coverage
  • Measurement: Code coverage metrics
  • Threshold: > 80% line coverage, 100% coverage of critical paths

5.2 Test Quality

  • Standard: Tests are reliable, maintainable, and meaningful
  • Measurement: Manual review of test quality
  • Threshold: 90% compliance with test quality checklist

5.3 Test Types

  • Standard: Appropriate mix of test types (unit, integration, e2e)
  • Measurement: Test type distribution
  • Threshold: Balanced test pyramid with appropriate coverage at each level

5.4 Test Independence

  • Standard: Tests are independent and deterministic
  • Measurement: Test flakiness metrics
  • Threshold: < 1% flaky tests

5.5 Test Maintainability

  • Standard: Tests are maintainable and follow testing best practices
  • Measurement: Manual review of test maintainability
  • Threshold: 90% compliance with test maintainability standards

6. Documentation (10%)

6.1 Code Comments

  • Standard: Code is appropriately commented
  • Measurement: Comment quality and coverage review
  • Threshold: All complex logic and non-obvious code commented

6.2 API Documentation

  • Standard: Complete and accurate API documentation
  • Measurement: API documentation coverage
  • Threshold: 100% of public APIs documented

6.3 README and Setup Documentation

  • Standard: Clear setup and usage documentation
  • Measurement: Documentation completeness review
  • Threshold: All setup steps and common usage scenarios documented

6.4 Architecture Documentation

  • Standard: Component architecture and relationships documented
  • Measurement: Architecture documentation review
  • Threshold: All major components and interactions documented

6.5 Knowledge Sharing

  • Standard: Complex implementations include knowledge sharing
  • Measurement: Knowledge sharing artifacts
  • Threshold: Knowledge sharing completed for all complex features

Quality Measurement Framework

Quality Scoring System

Each quality dimension is scored on a 5-point scale:

Score Description
5 Exceptional - Exceeds all standards
4 Strong - Meets all standards with some exceeding
3 Satisfactory - Meets all minimum standards
2 Needs Improvement - Falls short on some standards
1 Unsatisfactory - Falls short on multiple standards

Calculation of Overall Quality Score

The overall quality score is calculated as a weighted average of the dimension scores:

Overall Score = (Code Quality × 0.25) + (Functionality × 0.20) + (Performance × 0.15) + 
                (Maintainability × 0.15) + (Testing × 0.15) + (Documentation × 0.10)

Quality Levels

Based on the overall score, work is classified into one of four quality levels:

Level Score Range Description
Exceptional 4.5 - 5.0 Exemplary quality that can serve as a reference
Strong 3.5 - 4.4 High-quality work that meets all standards
Satisfactory 3.0 - 3.4 Acceptable quality that meets minimum standards
Needs Improvement < 3.0 Quality issues that need to be addressed

Quality Assurance Process

1. Self-Assessment

Developers perform a self-assessment against quality standards:

  • Complete the quality checklist for each dimension
  • Document any known deviations from standards
  • Prepare justification for any standards that cannot be met

2. Peer Review

Code undergoes peer review before being considered complete:

  • At least one peer reviewer must approve
  • Reviewer evaluates against all quality dimensions
  • Reviewer provides specific feedback on areas for improvement

3. Automated Checks

Automated tools verify compliance with measurable standards:

  • Static code analysis
  • Linting and style checking
  • Test coverage analysis
  • Performance benchmarking
  • Accessibility testing

4. Quality Gates

Implementation must pass quality gates at key milestones:

  • Development Complete: Self-assessment and automated checks pass
  • Review Complete: Peer review approval and resolution of feedback
  • Release Ready: Final quality verification and documentation complete

Continuous Improvement

Quality Metrics Tracking

Quality metrics are tracked over time to identify trends:

  • Team-level quality metrics dashboard
  • Individual developer quality profiles
  • Project-specific quality trends

Learning and Development

Continuous improvement is supported through:

  • Regular code quality workshops
  • Sharing of best practices and lessons learned
  • Recognition of exceptional quality work
  • Targeted training for areas needing improvement

Standards Evolution

Quality standards evolve based on:

  • Retrospective feedback
  • Industry best practice changes
  • Technology stack evolution
  • Project-specific requirements

Appendix: Quality Checklists

Code Quality Checklist

  • Code follows architectural patterns
  • Functions/components have single responsibility
  • Naming is clear and consistent
  • Error handling is comprehensive
  • No code smells (long methods, large classes, etc.)
  • No duplication of logic
  • Consistent formatting and style
  • No commented-out code
  • No hardcoded values that should be configurable
  • Appropriate use of language/framework features

Functionality Checklist

  • All requirements implemented correctly
  • Edge cases handled appropriately
  • Error states managed gracefully
  • Accessibility requirements met
  • Cross-browser/device compatibility verified
  • Internationalization supported if required
  • Security best practices followed
  • User experience consistent with design specifications
  • Performance requirements met
  • Integration points work correctly

Testing Checklist

  • Unit tests cover core functionality
  • Integration tests verify component interactions
  • Edge cases and error conditions tested
  • Performance tests for critical paths
  • Accessibility tests included
  • Tests are deterministic (no flakiness)
  • Test descriptions are clear and meaningful
  • Mocks and test doubles used appropriately
  • Test coverage meets minimum thresholds
  • Tests follow AAA (Arrange-Act-Assert) pattern

Last Updated: June 2025