eslint-plugin-es-x

eslint-plugin-es-x is an ESLint plugin that enforces rules based on ECMAScript version support, allowing developers to restrict or require specific syntactic features from ES5 through the latest proposals. It is designed for library authors and teams who need to ensure their code remains compatible with older JavaScript engines or who want to gradually adopt new language features. Its interest lies in providing fine-grained, per-feature control over JavaScript syntax, making it a powerful tool for managing polyfills, transpilation targets, and codebase modernization.