React is a popular JavaScript library for building user interfaces, and with its hooks feature, developers can easily manage and update the state of their components. One such hook that can be particularly useful is the react useSyncExternalStore hook. This hook allows you to synchronize the state of a React component with an external store, such as a server or a database.
In this blog post, we’ll go over how to use the useSyncExternalStore hook in a real-world example. We’ll be building a simple to-do application that allows users to add and remove items from a list, and synchronizes the list with an external store.
First, we’ll need to install the useSyncExternalStore hook. We can do this by running the following command in our terminal:
npm install react-use-sync-external-storeNext, we’ll import the hook into our component and set up our external store. In this example, we’ll be using a simple JSON file as our external store. We’ll import the useSyncExternalStore hook and then set up our store by passing in the file path and an initial state.
import useSyncExternalStore from 'react-use-sync-external-store';
const externalStore = useSyncExternalStore('path/to/store.json', { items: [] });Now, we can use the externalStore object to access and update the state in our external store. For example, we can add an item to our list by calling the addItem function on the externalStore object and passing in the item.
function addItem(item) {
externalStore.addItem(item);
}We can also remove an item from our list by calling the removeItem function and passing in the index of the item to be removed.
function removeItem(index) {
externalStore.removeItem(index);
}In this example, we have demonstrated the basic usage of the react useSyncExternalStore hook in a real-world scenario. The useSyncExternalStore hook can help to simplify the process of synchronizing the state of a React component with an external store, and can be easily integrated into your own projects.
