# babel-plugin-syntax-class-properties > Allow parsing of class properties. ## Installation ```sh npm install --save-dev babel-plugin-syntax-class-properties ``` ## Usage ### Via `.babelrc` (Recommended) **.babelrc** ```json { "plugins": ["syntax-class-properties"] } ``` ### Via CLI ```sh babel --plugins syntax-class-properties script.js ``` ### Via Node API ```javascript require("@babel/core").transform("code", { plugins: ["syntax-class-properties"] }); ```