wpseek.com
A WordPress-centric search engine for devs and theme authors

function wp_should_load_block_assets_on_demand() {
	if ( is_admin() || is_feed() || wp_is_rest_endpoint() ) {
		return false;
	}

	/*
	 * For backward compatibility, the default return value for this function is based on the return value of
	 * `wp_should_load_separate_core_block_assets()`. Initially, this function used to control both of these concerns.
	 */
	$load_assets_on_demand = wp_should_load_separate_core_block_assets();

	/**
	 * Filters whether block styles should be loaded on demand.
	 *
	 * Returning false loads all block assets, regardless of whether they are rendered in a page or not.
	 * Returning true loads block assets only when they are rendered.
	 *
	 * The default value of the filter depends on the result of {@see wp_should_load_separate_core_block_assets()},
	 * which controls whether Core block stylesheets should be loaded separately or via a combined 'wp-block-library'
	 * stylesheet.
	 *
	 * @since 6.8.0
	 *
	 * @param bool $load_assets_on_demand Whether to load block assets only when they are rendered.
	 */
	return apply_filters( 'should_load_block_assets_on_demand', $load_assets_on_demand );
}