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adev/shared-docs/providers/local-storage.ts
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SkyZeroZx
docs(docs-infra): apply OnPush change detection and remove redundant root provider
02 янв 2026, 10:23
02 янв 2026, 10:23
3b73eff
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/*! * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.dev/license */ import {isPlatformBrowser} from '@angular/common'; import {InjectionToken, PLATFORM_ID, inject} from '@angular/core'; export const LOCAL_STORAGE = new InjectionToken<Storage | null>('LOCAL_STORAGE', { factory: () => getStorage(inject(PLATFORM_ID)), }); const getStorage = (platformId: Object): Storage | null => { // Prerendering: localStorage is undefined for prerender build return isPlatformBrowser(platformId) ? new LocalStorage() : null; }; /** * LocalStorage is wrapper class for localStorage, operations can fail due to various reasons, * such as browser restrictions or storage limits being exceeded. A wrapper is providing error handling. */ class LocalStorage implements Storage { get length(): number { try { return localStorage.length; } catch { return 0; } } clear(): void { try { localStorage.clear(); } catch {} } getItem(key: string): string | null { try { return localStorage.getItem(key); } catch { return null; } } key(index: number): string | null { try { return localStorage.key(index); } catch { return null; } } removeItem(key: string): void { try { localStorage.removeItem(key); } catch {} } setItem(key: string, value: string): void { try { localStorage.setItem(key, value); } catch {} } }