# Core [//]: # 'AUTO INSERT HEADER PREPUBLISH' `lion-input-amount` component is based on the generic text input field. Its purpose is to provide a way for users to fill in an amount. ## Live Demo/Documentation > See our [storybook](http://lion-web-components.netlify.com/?path=/docs/core) for a live demo and API documentation ## How to use ### Installation ```sh npm i --save @lion/core ``` ```js import { dedupeMixin, LitElement } from '@lion/core'; ``` ### Example ```js const BaseMixin = dedupeMixin((superClass) => { return class extends superClass { ... }; }); ```