wp-calypso/packages/data-stores/src/user/README.md

User store

This store includes behavior for checking if a user is logged in, and fetching info about the current user.

Usage

Register the user store:

import { User } from '@automattic/data-stores';

const USER_STORE = User.register();

Current user

Check if a current user is logged in:

import { useSelect } from '@wordpress/data';

function MyComponent() {
    const isLoggedIn = useSelect( ( select ) => select( USER_STORE ).isCurrentUserLoggedIn() );
    // …snip
}