ai/browserslist
Browserslist
Browserslist is a browser compatibility configuration tool and a shared specification that synchronizes target browser versions across front-end build tools. It serves as a centralized system for defining browser support, ensuring consistency across CSS autoprefixers, JavaScript transpilers, and linting tools.
The tool integrates browser usage analytics to determine target lists based on real-world traffic statistics and global usage data. It also functions as a user agent regex generator, converting browser version queries into regular expressions for matching and validating browser user agent strings.
The project provides capabilities for cross-tool configuration sharing, web usage analysis, and frontend environment management. It includes utilities to calculate user coverage, analyze current configurations, and import shareable settings from external packages.
Features
- Cross-Tool Configuration Standards - Provides a centralized shared specification that synchronizes target browser versions across CSS autoprefixers, transpilers, and linters.
- Browser Compatibility Targets - Defines a centralized list of compatible browser versions that serves as the single source of truth for all front-end tools.
- Browser Usage Analytics - Integrates real-world traffic statistics from analytics providers to determine which browser versions to target.
- Version Filtering - Filters browser versions from a master database based on usage percentages or feature support criteria.
- Browser Compatibility Configurations - Provides a centralized system for defining target browser versions used by front-end build tools to ensure consistency.
- Configuration Distribution and Sharing - Synchronizes browser support targets across multiple tools like Autoprefixer and Babel to avoid redundant configuration.
- Browser Version Resolution - Resolves a specific list of supported browser versions based on usage statistics and feature support queries.
- User Agent Regex Generation - Translates browser version queries into regular expressions for precise user agent string matching.
- Browser Compatibility & Utilities - Ensures consistent behavior across various web browser environments by defining a unified set of target versions.
- Browser Usage Statistics - Integrates global and real-world traffic statistics to help determine compatible browser target lists.
- Usage Reporting - Uses global and custom traffic reports to determine the necessary browser versions for support.
- Environment Variable Mapping - Binds environment variables to specific browser query strings to vary targets between development and production.
- External Configuration Loading - Resolves and imports browser target configurations from external npm packages to synchronize standards across projects.
- Frontend Development Environments - Manages the browser compatibility requirements for different frontend development and production environments.
- Project Metadata Analyzers - Provides a command line interface to inspect project settings and list the exact browser versions being targeted.
- Shareable Configurations - Supports the distribution and reuse of browser compatibility settings across multiple projects via shareable packages.
- Environment Variable Management - Manages the assignment of different browser target lists for production and development stages using environment variables.
- Version Databases - Provides an up-to-date database of browser versions and global usage statistics via a separate data package.
- User Agent Detection Libraries - Generates regular expressions to validate and match browser user agent strings during application testing.
- User Agent Regex Generators - Converts browser version queries into regular expressions for matching and validating browser user agent strings.
- Centralized Configuration Systems - Implements a centralized system for organizing target browser settings to ensure consistency across different build tools.
- User Coverage Calculators - Computes the total percentage of global or custom users reached by the selected list of browsers.
- User Agent Validators - Generates regular expressions to identify and filter specific browser versions during application testing.
- Build and Transpilation Tools - Tool for sharing target browser configurations across tools.
Star history
How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.
