sindresorhus/xo
Xo
xo is a zero-config linting tool and ESLint wrapper that provides opinionated default rules for JavaScript and TypeScript. It functions as a static analysis tool to enforce code style and readability standards immediately upon installation without requiring manual configuration.
The tool distinguishes itself by providing a zero-config development workflow that eliminates the need for complex configuration files. It supports incremental codebase cleanup by allowing users to ignore known violations through a suppressions file, facilitating the gradual adoption of strict rules in existing projects.
Beyond basic linting, it includes capabilities for automated code formatting, TypeScript static analysis, and the ability to automatically fix syntax and style errors. It also manages parser project resolution for TypeScript and integrates with external plugins to analyze framework template files.
Performance is supported through the caching of linting results to avoid re-processing unchanged files.
Features
- Zero-Config Tooling - Provides a professional linting environment for JavaScript and TypeScript without requiring any manual configuration files.
- Configuration-Free Rule Sets - Provides a zero-config environment using predefined, opinionated coding standards to eliminate manual setup.
- Zero-Config Linters - Applies consistent code style and quality standards immediately upon installation without requiring manual configuration.
- Automated Lint Fixes - Corrects common style and syntax issues automatically to align code with defined rules.
- Configuration Wrappers - Encapsulates complex ESLint configurations behind a simplified, opinionated interface to remove manual setup.
- TypeScript Validators - Performs static analysis and type validation for TypeScript code to ensure correctness and readability.
- Analysis Suppressions - Allows ignoring known linting violations through a dedicated suppressions file for incremental adoption.
- JavaScript Linters - Acts as a static analysis tool that identifies style violations and potential errors in JavaScript code.
- JavaScript Style Linting - Enforces stylistic consistency and coding standards for JavaScript and TypeScript files.
- TypeScript Static Analysis - Lints TypeScript files and automatically manages parser project settings.
- Code Formatting - Provides automated code formatting to fix syntax and style violations.
- Code Formatting Tools - Integrates formatting tools like Prettier to automatically organize and style source code.
- Linting Configurations - Provides mechanisms to override default linting behavior via configuration files or manifests.
- Manifest-Based Rule Overrides - Allows users to customize default linting behavior via the package manifest or a configuration file.
- Linting Suppressions - Provides a suppressions file to ignore known violations, facilitating incremental adoption of strict linting rules.
- Parser Configuration Resolution - Automatically manages TypeScript project settings and parser configurations even without local config files.
- Shareable Configurations - Complete preconfigured setup for opinionated JavaScript linting.
Star history
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