@babel/plugin-transform-private-property-in-object enables Babel to transform private class properties accessed reflectively using the in operator. This plugin is essential for achieving broader browser compatibility when your JavaScript code leverages modern private class features. Without this transformation, older browsers might not correctly interpret the in operator used with private fields, leading to unexpected errors or behavior. By incorporating this plugin, developers can confidently use private class properties while ensuring their code runs smoothly across various environments.
