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---
name: code-quality
description: Code quality guidelines. ALWAYS use skill for ANY code changes.
---
# Code Quality Guidelines
## Don't write forgiving code
- Don't permit multiple input formats
- In TypeScript, this means avoiding Union Type (the `|` in types)
- Use preconditions
- Use schema libraries
- Assert that inputs match expected formats
- When expectations are violated, throw, don't log
- Don't add defensive try/catch blocks
- Usually we let exceptions propagate out
- Don't keep legacy code paths as fallbacks
- Remove old code instead of keeping it around for compatibility
## Naming Conventions
- Don't use abbreviations or acronyms
- Choose `number` instead of `num` and `greaterThan` instead of `gt`
## File Management
- Prefer editing an existing file to creating a new one
- Confirm with the user before creating any new markdown files
## Style
- Emoji and unicode characters are welcome
- Use them at the beginning of comments, commit messages, and in headers in docs
