Fallow: codebase intelligence for JavaScript and TypeScript Codebase intelligence for JavaScript and TypeScript. The free static layer reports quality, changed-code risk, cleanup opportunities, circular dependencies, code duplication, complexity hotspots, architecture boundary violations, and feature flag patterns. Runtime coverage merges production execution data into the same 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. 114 framework plugins, zero configuration, sub-seco…