# @babel/plugin-proposal-optional-chaining > Transform optional chaining operators into a series of nil checks See our website [@babel/plugin-proposal-optional-chaining](https://babeljs.io/docs/en/babel-plugin-proposal-optional-chaining) for more information. ## Install Using npm: ```sh npm install --save-dev @babel/plugin-proposal-optional-chaining ``` or using yarn: ```sh yarn add @babel/plugin-proposal-optional-chaining --dev ```
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