gppro_before_css_builder

Runs any custom action prior to building the CSS output.

Write the CSS build start time to the debug log

add_action( 'gppro_before_css_builder', 'my_before_css_builder' );
/**
 * Log the time before CSS build starts
 */
function my_before_css_builder( $data ) {
	error_log( 'CSS Build started at: ' . date( 'Y-m-d H:i:s' ) );
}