fallow

SKILL.md

Fallow: codebase intelligence for JavaScript and TypeScript

Codebase intelligence for JavaScript and TypeScript. The free static layer finds unused code, circular dependencies, code duplication, complexity hotspots, architecture boundary violations, and feature flag patterns. Runtime coverage merges production execution data into the same fallow health report for hot-path review, cold-path deletion confidence, and stale-flag evidence: a single local capture is free, while continuous/cloud runtime monitoring is paid. 95 framework plugins, zero configuration, sub-second static analysis.

When to Use

Finding dead code (unused files, exports, types, enum/class members)

Finding unused or unlisted dependencies

Detecting code duplication and clones

Checking code health and complexity hotspots

Cleaning up a codebase before a release or refactor

Auditing a project for structural issues

Setting up CI checks for dead code or duplication thresholds

Auto-fixing unused exports and dependencies

Detecting feature flag patterns (environment gates, SDK calls, config objects)

Investigating why a specific export or file appears unused

When NOT to Use