ECC: Skill for Claude Code

Coding Standards & Best Practices

Baseline coding conventions applicable across projects.

This skill is the shared floor, not the detailed framework playbook.

• Use frontend-patterns for React, state, forms, rendering, and UI architecture.
• Use backend-patterns or api-design for repository/service layers, endpoint design, validation, and server-specific concerns.
• Use rules/common/coding-style.md when you need the shortest reusable rule layer instead of a full skill walkthrough.

When to Activate

• Starting a new project or module
• Reviewing code for quality and maintainability
• Refactoring existing code to follow conventions
• Enforcing naming, formatting, or structural consistency
• Setting up linting, formatting, or type-checking rules
• Onboarding new contributors to coding conventions

Scope Boundaries

Activate this skill for:

• descriptive naming
• immutability defaults
• readability, KISS, DRY, and YAGNI enforcement
• error-handling expectations and code-smell review

Do not use this skill as the primary source for:

• React composition, hooks, or rendering patterns
• backend architecture, API design, or database layering
• domain-specific framework guidance when a narrower ECC skill already exists

Code Quality Principles

1. Readability First

• Code is read more than written
• Clear variable and function names
• Self-documenting code preferred over comments
• Consistent formatting

2. KISS (Keep It Simple, Stupid)

• Simplest solution that works
• Avoid over-engineering
• No premature optimization
• Easy to understand > clever code

3. DRY (Don't Repeat Yourself)

• Extract common logic into functions
• Create reusable components
• Share utilities across modules
• Avoid copy-paste programming

4. YAGNI (You Aren't Gonna Need It)

• Don't build features before they're needed
• Avoid speculative generality
• Add complexity only when required
• Start simple, refactor when needed

TypeScript/JavaScript Standards

Variable Naming