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[utils] Port
useLocalStorageState hook from Toolpad (mui#41096)
Signed-off-by: Jan Potoms <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| export { default } from './useLocalStorageState'; |
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packages/mui-utils/src/useLocalStorageState/useLocalStorageState.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,155 @@ | ||
| 'use client'; | ||
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| import * as React from 'react'; | ||
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| const NOOP = () => {}; | ||
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| // storage events only work across tabs, we'll use an event emitter to announce within the current tab | ||
| const currentTabChangeListeners = new Map<string, Set<() => void>>(); | ||
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| function onCurrentTabStorageChange(key: string, handler: () => void) { | ||
| let listeners = currentTabChangeListeners.get(key); | ||
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| if (!listeners) { | ||
| listeners = new Set(); | ||
| currentTabChangeListeners.set(key, listeners); | ||
| } | ||
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| listeners.add(handler); | ||
| } | ||
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| function offCurrentTabStorageChange(key: string, handler: () => void) { | ||
| const listeners = currentTabChangeListeners.get(key); | ||
| if (!listeners) { | ||
| return; | ||
| } | ||
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| listeners.delete(handler); | ||
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| if (listeners.size === 0) { | ||
| currentTabChangeListeners.delete(key); | ||
| } | ||
| } | ||
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| function emitCurrentTabStorageChange(key: string) { | ||
| const listeners = currentTabChangeListeners.get(key); | ||
| if (listeners) { | ||
| listeners.forEach((listener) => listener()); | ||
| } | ||
| } | ||
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| function subscribe(area: Storage, key: string, cb: () => void): () => void { | ||
| const storageHandler = (event: StorageEvent) => { | ||
| if (event.storageArea === area && event.key === key) { | ||
| cb(); | ||
| } | ||
| }; | ||
| window.addEventListener('storage', storageHandler); | ||
| onCurrentTabStorageChange(key, cb); | ||
| return () => { | ||
| window.removeEventListener('storage', storageHandler); | ||
| offCurrentTabStorageChange(key, cb); | ||
| }; | ||
| } | ||
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| function getSnapshot(area: Storage, key: string): string | null { | ||
| return area.getItem(key); | ||
| } | ||
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| function setValue(area: Storage, key: string, value: string | null) { | ||
| if (typeof window !== 'undefined') { | ||
| if (value === null) { | ||
| area.removeItem(key); | ||
| } else { | ||
| area.setItem(key, String(value)); | ||
| } | ||
| emitCurrentTabStorageChange(key); | ||
| } | ||
| } | ||
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| type Initializer<T> = () => T; | ||
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| type UseStorageStateHookResult<T> = [T, React.Dispatch<React.SetStateAction<T>>]; | ||
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| function useLocalStorageStateServer( | ||
| key: string | null, | ||
| initializer: string | Initializer<string>, | ||
| ): UseStorageStateHookResult<string>; | ||
| function useLocalStorageStateServer( | ||
| key: string | null, | ||
| initializer?: string | null | Initializer<string | null>, | ||
| ): UseStorageStateHookResult<string | null>; | ||
| function useLocalStorageStateServer( | ||
| key: string | null, | ||
| initializer: string | null | Initializer<string | null> = null, | ||
| ): UseStorageStateHookResult<string | null> | UseStorageStateHookResult<string> { | ||
| const [initialValue] = React.useState(initializer); | ||
| return [initialValue, () => {}]; | ||
| } | ||
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| /** | ||
| * Sync state to local storage so that it persists through a page refresh. Usage is | ||
| * similar to useState except we pass in a storage key so that we can default | ||
| * to that value on page load instead of the specified initial value. | ||
| * | ||
| * Since the storage API isn't available in server-rendering environments, we | ||
| * return initialValue during SSR and hydration. | ||
| * | ||
| * Things this hook does different from existing solutions: | ||
| * - SSR-capable: it shows initial value during SSR and hydration, but immediately | ||
| * initializes when clientside mounted. | ||
| * - Sync state across tabs: When another tab changes the value in the storage area, the | ||
| * current tab follows suit. | ||
| */ | ||
| function useLocalStorageStateBrowser( | ||
| key: string | null, | ||
| initializer: string | Initializer<string>, | ||
| ): UseStorageStateHookResult<string>; | ||
| function useLocalStorageStateBrowser( | ||
| key: string | null, | ||
| initializer?: string | null | Initializer<string | null>, | ||
| ): UseStorageStateHookResult<string | null>; | ||
| function useLocalStorageStateBrowser( | ||
| key: string | null, | ||
| initializer: string | null | Initializer<string | null> = null, | ||
| ): UseStorageStateHookResult<string | null> | UseStorageStateHookResult<string> { | ||
| const [initialValue] = React.useState(initializer); | ||
| const area = window.localStorage; | ||
| const subscribeKey = React.useCallback( | ||
| (cb: () => void) => (key ? subscribe(area, key, cb) : NOOP), | ||
| [area, key], | ||
| ); | ||
| const getKeySnapshot = React.useCallback( | ||
| () => (key && getSnapshot(area, key)) ?? initialValue, | ||
| [area, initialValue, key], | ||
| ); | ||
| const getKeyServerSnapshot = React.useCallback(() => initialValue, [initialValue]); | ||
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| const storedValue = React.useSyncExternalStore( | ||
| subscribeKey, | ||
| getKeySnapshot, | ||
| getKeyServerSnapshot, | ||
| ); | ||
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| const setStoredValue = React.useCallback( | ||
| (value: React.SetStateAction<string | null>) => { | ||
| if (key) { | ||
| const valueToStore = value instanceof Function ? value(storedValue) : value; | ||
| setValue(area, key, valueToStore); | ||
| } | ||
| }, | ||
| [area, key, storedValue], | ||
| ); | ||
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| const [nonStoredValue, setNonStoredValue] = React.useState(initialValue); | ||
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| if (!key) { | ||
| return [nonStoredValue, setNonStoredValue]; | ||
| } | ||
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| return [storedValue, setStoredValue]; | ||
| } | ||
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| export default typeof window === 'undefined' | ||
| ? useLocalStorageStateServer | ||
| : useLocalStorageStateBrowser; |