Elixir Antipatterns

What it does

This skill enables AI agents to identify, analyze, and refactor code containing common Elixir programming antipatterns. It helps maintain code quality by detecting inefficient structures like excessive use of Enum functions or improper state management before they cause performance issues.

When to use it

• Reviewing legacy Elixir codebases to modernize outdated patterns.
• Validating new features during the development cycle to prevent technical debt.
• Auditing team pull requests for adherence to best practices and clean code principles.
• Preparing production systems for scaling by eliminating known performance bottlenecks.

Key capabilities

• Detects inefficient use of Enum module functions (e.g., chaining multiple passes).
• Identifies improper usage of Task.async! leading to blocking behavior.
• Flags excessive recursion that could cause stack overflows.
• Recognizes misuse of Process.registered? for state tracking instead of proper supervision trees.

Example prompts

• "Scan this module and list all instances where Enum.map is used unnecessarily."
• "Refactor the following function to remove the antipattern of blocking on async tasks."
• "Identify any code patterns in this file that violate Elixir's 'Eager is better than lazy' principle."

Tips & gotchas

Ensure your codebase includes standard library modules, as the skill relies on recognizing specific idiomatic structures. While effective for common issues, it may not catch every niche architectural flaw unique to complex domain logic.