src/class-wp-register.php
protected static function look_if_process_files( $type ) {

		if ( is_string( self::$unify ) || isset( self::$unify[ "{$type}s" ] ) ) {
			return self::unify_files(
				self::prepare_files( $type )
			);
		}
	}
protected static function look_if_process_files( $type ) {

		if ( is_string( self::$unify ) || isset( self::$unify[ "{$type}s" ] ) ) {
			return self::unify_files(
				self::prepare_files( $type )
			);
		}
	}
Look whether to process files to minify or unify files.

@since 1.0.4

@param string $type → script|style.

@return boolean