Store

Simple, powerful and elegant implementation of the repository pattern, using generics.

Why? 🤔

There are a couple of ways to implement the Repository-pattern in Swift. Creating custom classes for each one of your stores will lead to a lot of boiler-plate. Also, you'd probably need to implement support for Combine, async-functions to fetch the data etc.

What? 🤷🏽‍♂️

In order to remedy this, Store provides two generic protocols ReadStore and Store that can be used. It also comes with some implementations out-of-the-box:

• AsyncStore for feching data asynchronously.
• MemoryStore for when you already have the data on hand.

Stores have a state (loading, error or loaded) and also have a fetch()-function to do the initial fetching. Stores can be chained using the chainWith()-function. This means, you can use the output from the first fetch as input for a second fetch. Perfect when you for instance get an ID from a network call and need to do another call to fetch the entity. You can also do parallel fetching (using the parallel()-function). If any of these calls fail, the store state will be errored. The stores can be mapped, unwrapped etc.