Flint

About Flint

Flint is a fast, simple lint runner that doesn't slow down your AI coding. - Fast — native execution (no Docker), parallel, diff-aware (changed files only), opt-in (undeclared tools don't run), small binary cached by mise - Local + CI aligned — one binary, one config model, local defaults tuned for day-to-day work and broader coverage in CI - Sensible defaults — flint init scaffolds a working setup quickly, and most repos can stick with the generated defaults - Opinionated config — Flint chooses canonical config filenames per linter, while still letting you keep them in a directory such as .github/config - AI-friendly — quiet by default: clean runs print nothing, --fix surfaces only what still needs action - Separated ownership — dedicated linters and formatters own their file types to avoid overlapping rules and editor-config conflicts - Predictable and updatable linter versions — lint behavior stays stable until the repo intentionally updates pinned linter versions, for example via Renovate updates to mise.toml - Cross-platform — Linux, macOS, Windows - Autofix — --fix fixes what's fixable; reports what still needs review

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