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Create sessionStorage State

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Store your shared state that lives in sessionStorage and synchronize the state of a component with the data stored in the sessionStorage. Lift your state up and passing them deeply into your React app without worrying about performance.

Usage

src/context/sidebar-active.tsx
import { createSessionStorageState } from 'foxact/create-session-storage-state'; export const [useSidebarActive, useSidebarActiveValue, useSetSidebarActive] = createSessionStorageState( 'sidebar-active', // The sessionStorage key /** * The initial value to use if there is no item in the local storage with the provided key, * the undefined value will be used if no initial value is provided. * * Also, the initial value will also be used during the server-side rendering, see below. */ false, /** * Optional configuration object enables the customization of value serialization before it's stored in local storage. */ { // Optional, default to false. When set to "true", the value will be passed to the sessionStorage API as is. raw: false, // Optional, default to "JSON.stringify". Can only be specified when the "raw" is set to false (which is the default). serializer: JSON.stringify, // Optional, default to "JSON.parse". Can only be specified when the "raw" is set to false (which is the default). deserializer: JSON.parse, } );

And now you can use these hooks anywhere in your app:

s../../components/sidebar.tsx
import { memo } from 'react'; import { useSetSidebarActive, useSidebarActive, useSidebarActiveValue } from '../context/sidebar-active'; function Sidebar() { const [sidebarActive, setSidebarActive] = useSidebarActive(); // If you only need the value, you can use useSidebarActiveValue instead: const sidebarActive = useSidebarActiveValue(); // If you only need the setter, you can use useSetSidebarActive instead: const setSidebarActive = useSetSidebarActive(); return ( <div className={`sidebar ${sidebarActive ? 'active' : ''}`}> <button onClick={() => setSidebarActive(false)}>Close Sidebar</button> <button onClick={() => setSidebarActive(true)}>Open Sidebar</button> </div> ); } export default memo(Sidebar);

Server-side Rendering

See createLocalStorageState for more details.