Question 1

How do I store a file or image using localForage?

Accepted Answer

localForage supports Blobs, so you can fetch a file and use setItem() with the Blob object. For example, use fetch() to get an image, then store it directly. However, be aware of browser storage quotas for large files.

Question 2

localForage vs IndexedDB: which is better for a PWA?

Accepted Answer

localForage is ideal if you want a simple, async API without dealing with IndexedDB's complexity. Choose IndexedDB directly if you need advanced features like transactions, indexes, or precise control over performance in data-heavy apps.

Question 3

Can I use localForage in a Node.js environment?

Accepted Answer

No, localForage is designed for browser storage APIs like IndexedDB and WebSQL, which aren't available in Node.js. For server-side storage, use databases like SQLite or file systems with Node.js libraries.

Question 4

How to handle errors when localForage fails to save data?

Accepted Answer

Use Promise catch blocks or callback error parameters, as shown in the README examples. Common errors include quota exceeded or backend failures; localForage provides error objects to help debug these issues.

Question 5

What's the best way to migrate from localStorage to localForage?

Accepted Answer

Iterate through localStorage keys, parse string values if needed, and use localForage's setItem() to store them asynchronously. Since localForage handles JSON automatically, complex objects can be migrated without extra serialization steps.

Question 6

Does localForage support encryption for stored data?

Accepted Answer

No, localForage does not include built-in encryption. You must manually encrypt data before storing it, using libraries like CryptoJS, and decrypt it when retrieving, as localForage only provides the storage layer.

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