eslint-visitor-keys provides a curated list of AST node properties that should be traversed during static analysis. It offers a standardized way to access visitor keys for different ECMAScript versions and AST specifications like ESTree. This package is essential for tools like ESLint rule developers, linters, and code transformers that need to consistently and comprehensively analyze JavaScript code structure. By using this library, developers can simplify AST traversal logic and ensure compatibility across various JavaScript parsers and versions.