What are the differences between Svelte stores?

What are the differences between writable, readable, and derived stores in Svelte?

Writable stores allow you to set and update values, readable stores are for values that can't be changed directly, and derived stores compute values based on other stores.

Can you give me an example of how to use a derived store?

Sure! You can create a derived store like this: const doubled = derived(originalStore, $original => $original * 2); This will create a store that always has double the value of originalStore.

When should I use a readable store instead of a writable store?

Use a readable store when you want to expose a value that shouldn't be modified directly, like a constant or a value from an API.

Are there any performance considerations when using derived stores?

Yes, derived stores can be more performance-intensive since they recompute their value whenever the source stores change. It's best to use them judiciously.