The @babel/helper-fixtures package provides a standardized way to run test suites against Babel transforms. It offers a simple API for loading fixtures, applying Babel transformation options, and asserting expected outputs. This utility streamlines the process of verifying that Babel plugins and core transformations function as intended across various code examples, promoting robust testing practices and ensuring code quality within the Babel ecosystem. It simplifies the management and execution of fixture-based tests during Babel plugin development.