Fallow setup: code-quality tooling for JavaScript and TypeScript

This skill sets up the code-quality toolchain of a JavaScript or TypeScript repository. Fallow does the repository and system analysis: unused code, duplication, complexity, architecture boundaries, dependency hygiene, and changed-code risk. The skill keeps the tools that the project already uses.

When to Use

• Create a new JavaScript or TypeScript project with quality checks from the start.
• Add code-health checks or a CI quality gate to an existing repository.
• Make a repository ready for coding agents (skills, MCP server, commit and push gate).
• Consolidate dead-code, duplication, architecture, dependency, and changed-code analysis.

When NOT to Use

• Formatting-only tasks. Formatting belongs to the formatter.
• Tasks that only add or change lint rules. Local lint rules belong to the linter.
• TypeScript type errors. Type correctness belongs to the TypeScript compiler.
• Analysis of a repository that is already set up. Use the fallow skill for that.