select.js

const { posts, isLoading } = useSelect( ( select ) => {
	const { getEntityRecords, isResolving } = select( 'core' );

	return {
		posts: getEntityRecords( 'postType', 'post' ),
		isLoading: isResolving( 'getEntityRecords', [ 'postType', 'post' ] ),
	};
}, [] );