bp_is_activity_heartbeat_active( bool $default = true )

function bp_is_activity_heartbeat_active( $default = true ) {

	/**
	 * Filters whether or not Activity Heartbeat refresh is enabled.
	 *
	 * @since BuddyPress 2.0.0
	 *
	 * @param bool $value Whether or not Activity Heartbeat refresh is enabled.
	 */
	return (bool) apply_filters( 'bp_is_activity_heartbeat_active', (bool) bp_get_option( '_bp_enable_heartbeat_refresh', $default ) );
}