Fallow - Codebase Health

April 12, 2026

Version updated for https://github.com/fallow-rs/fallow to version v2.29.1.

This action is used across all versions by 6 repositories.

Action Type

This is a Composite action.

Go to the GitHub Marketplace to find the latest changes.

Action Summary

This GitHub Action provides a high-performance codebase analysis tool for TypeScript and JavaScript projects, focusing on identifying unused code, duplication, complexity, and architectural issues. Designed to be fast, Rust-based, and configuration-free, it automates tasks such as detecting dead code, circular dependencies, and code duplication, while offering features like real-time analysis, framework-specific plugins, and automated fixes for dead code cleanup. This tool streamlines maintaining clean, efficient, and scalable codebases, especially in large projects or monorepos.

What’s Changed

Fix

Feature flag inline suppression now works (#108 follow-up)

// fallow-ignore-next-line feature-flag and // fallow-ignore-file feature-flag now suppress feature flag findings in the fallow flags command. Previously, the JSON output suggested this comment as an action but the command never consulted the suppression system, so the comment was silently ignored.

// fallow-ignore-next-line feature-flag
const darkMode = process.env.FEATURE_DARK_MODE;

const newCheckout = process.env.FEATURE_NEW_CHECKOUT; // still reported

Both the built-in detection loop and the custom SDK/env-prefix detection loop now call is_suppressed() / is_file_suppressed() with IssueKind::FeatureFlag.

Upgrade

npx @fallow-cli/fallow      # or
cargo install fallow-cli

Full Changelog: https://github.com/fallow-rs/fallow/compare/v2.29.0...v2.29.1