Browser Storage Utility

Build a browser storage utility that works across different browsers and environments, including older browsers and privacy modes where standard storage may not be available.

Requirements

Your utility should provide persistent key-value storage that:

1. Works in all browser environments - including modern browsers, older browsers, and privacy/incognito modes where standard storage mechanisms may fail
2. Automatically selects working storage - tries multiple storage mechanisms and uses the first one that works
3. Provides consistent API - offers simple get/set operations regardless of the underlying storage mechanism
4. Handles storage failures gracefully - doesn't crash when a storage mechanism is unavailable

Storage Priority

The utility should attempt to use storage mechanisms in this order:

1. localStorage (primary)
2. sessionStorage (secondary)
3. In-memory storage (fallback)

Test Cases

• Setting a string value and retrieving it returns the correct value @test
• The utility correctly reports storage availability status @test
• Multiple values can be stored and retrieved independently @test

Implementation

@generates

API

/**
 * Stores a value under the given key
 * @param {string} key - The storage key
 * @param {any} value - The value to store (will be serialized)
 */
export function set(key, value);

/**
 * Retrieves a value by key
 * @param {string} key - The storage key
 * @returns {any} The stored value, or undefined if not found
 */
export function get(key);

/**
 * Checks if persistent storage is available
 * @returns {boolean} true if persistent storage is working, false if using in-memory fallback
 */
export function isAvailable();

Dependencies { .dependencies }

store { .dependency }

Provides cross-browser local storage support.