WordPress at a glance
filter is not described

woocommerce_component_settings_preload_endpoints filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_component_settings_preload_endpoints', 'filter_function_name_3615' );
function filter_function_name_3615( $array ){
	// filter...

	return $array;
}
$array
-

Where the hook is called

Loader::add_component_settings()
woocommerce_component_settings_preload_endpoints
woocommerce/packages/woocommerce-admin/src/Loader.php 1057
$preload_data_endpoints = apply_filters( 'woocommerce_component_settings_preload_endpoints', array( '/wc/v3' ) );

Where in WP core the hook is used WooCommerce

woocommerce/packages/woocommerce-admin/src/Features/Analytics.php 42
add_filter( 'woocommerce_component_settings_preload_endpoints', array( $this, 'add_preload_endpoints' ) );
woocommerce/packages/woocommerce-admin/src/Features/AnalyticsDashboard.php 41
add_filter( 'woocommerce_component_settings_preload_endpoints', array( $this, 'add_preload_endpoints' ) );