# @babel/plugin-proposal-class-properties > This plugin transforms static class properties as well as properties declared with the property initializer syntax See our website [@babel/plugin-proposal-class-properties](https://babeljs.io/docs/en/babel-plugin-proposal-class-properties) for more information. ## Install Using npm: ```sh npm install --save-dev @babel/plugin-proposal-class-properties ``` or using yarn: ```sh yarn add @babel/plugin-proposal-class-properties --dev ```