jsonc-eslint-parser extends ESLint's capabilities to lint and fix JSON with comments (JSONC). It enables developers to maintain code quality and enforce styling rules within JSONC files, which are commonly used for configuration and data storage. By leveraging this parser, ESLint can identify potential errors, enforce consistent formatting, and improve the overall maintainability of JSONC codebases. It supports a wide range of ESLint rules, providing comprehensive linting for JSONC projects.