# @babel/helper-annotate-as-pure > Helper function to annotate paths and nodes with #__PURE__ comment See our website [@babel/helper-annotate-as-pure](https://babeljs.io/docs/en/babel-helper-annotate-as-pure) for more information. ## Install Using npm: ```sh npm install --save @babel/helper-annotate-as-pure ``` or using yarn: ```sh yarn add @babel/helper-annotate-as-pure ```