A lightweight ESLint shareable configuration named **eslint‑config‑cosmo** provides the default linting rules used by the Cosmo CLI. It extends Airbnb’s base config, integrates Prettier and Flow support, and can be added to any JavaScript project (or automatically applied when a project is boot‑strapped with Cosmo) by installing the listed dev dependencies and extending `"cosmo"` in the project’s `.eslintrc.js`. The package is aimed at developers who want a ready‑made, opinionated linting setup that works out‑of‑the‑box with Prettier and Flow.