This Babel plugin enables parsing of class properties, a Stage 3 ECMAScript proposal. It allows you to use modern JavaScript syntax like public, private, and static class fields in your code. Without this plugin, Babel will not recognize and transpile class properties, leading to syntax errors. Using @babel/plugin-syntax-class-properties ensures your code remains compatible across different environments by enabling Babel to correctly interpret and transform your class property syntax. Useful for simplifying class structures and enhancing code readability during development.