XO Linter

XO is an opinionated JavaScript and TypeScript linter that wraps ESLint, providing a zero-configuration setup with strict, readable code defaults. It aims to streamline code style enforcement and eliminate style-related discussions in pull requests. The current stable version is 2.0.2, with a relatively active release cadence to incorporate updates and maintain compatibility with its underlying dependencies. Key differentiators include its batteries-included approach, which bundles many useful ESLint plugins (e.g., `unicorn`, `import-x`, `n`), automatic caching for performance, first-class TypeScript support, and flexible integration options, including optional Prettier usage. It mandates an ESM-only project structure for optimal functionality.