dequeues()

Usage

This function runs automatically, so it is not called manually. Is this incorrect?

Additional Notes

This dequeues scripts that are not needed on certain pages.

Source File

Located in /libs/Optimization.php on line 610.

1 Hook

Find these filters and actions in the source code below to hook into them. Use do_action() and add_filter() in your functions file or plugin.

Filters

"pre_nebula_dequeues"
Need a new filter hook? Request one here.

Actions

This function has no action hooks available. Request one?

Note: This function contains 1 to-do comment.

PHP

        public function dequeues(){
            $override = apply_filters('pre_nebula_dequeues', null);
            if ( isset($override) ){return;}

            if ( !is_admin() ){
                $current_action = current_action(); //Get the current WordPress action handle that was called (so we know which one we are "inside")
                $timer_name = $this->timer('Advanced Dequeues (' . $current_action . ')');
                $this->deregister('contact-form-7', 'style'); //Removing CF7 styles in favor of Bootstrap + Nebula
                $this->deregister('wp-embed', 'script'); //WP Core WP-Embed - Override this only if embedding external WordPress posts into this WordPress site. Other oEmbeds are NOT AFFECTED by this!

                //Page specific dequeues
                if ( is_front_page() ){
                    $this->deregister('thickbox', 'style'); //WP Core Thickbox - Override this if thickbox type gallery IS used on the homepage.
                    $this->deregister('thickbox', 'script'); //WP Thickbox - Override this if thickbox type gallery IS used on the homepage.
                }

                if ( !empty($current_action) ){
                    //Ignore script dependencies on style-based hooks (enqueue_scripts and print_scripts)
                    // if ( strpos($current_action, 'scripts') !== false ){ //@todo "Nebula" 0: Update strpos() to str_contains() in PHP8
                    //    //Disabled because some functionality still needs wp-polyfill even in modern browsers. Ugh. Ex: https://nebula.gearside.com/functions/infinite_load_query/
                    //     //Remove "wp-polyfill" but first need to remove that dependency from other scripts. In the future, this may no longer be needed... hopefully. Watch this issue: https://github.com/WordPress/gutenberg/issues/21616
                    //     $scripts = wp_scripts(); //Get all of the script dependencies
                    //     foreach ( $scripts->registered as $registered_script ){ //Loop through all registered scripts
                    //         foreach ( $registered_script->deps as $dep_key => $handle ){ //Loop through each of the dependencies
                    //             if ( $handle === 'wp-polyfill' ){ //If this dependency is "wp-polyfill"
                    //                 unset($registered_script->deps[$dep_key]); //Remove this dependency
                    //             }
                    //         }
                    //     }
                    //     $this->deregister('wp-polyfill', 'script', false); //Now we can deregister "wp-polyfill" without breaking other assets
                    // }

                    //Dequeue styles based on selected Nebula options
                    if ( $current_action !== 'wp_print_scripts' ){ //Check the last hook to run and skip dequeuing styles on the print scripts hook
                        $styles_to_dequeue = $this->get_option('dequeue_styles');
                        if ( !empty($styles_to_dequeue) ){
                            $this->check_dequeue_rules($styles_to_dequeue, 'styles');
                        }
                    }

                    //Dequeue scripts based on selected Nebula options
                    if ( $current_action !== 'wp_print_styles' ){ //Check the last hook to run and skip dequeuing scripts on the print styles hook
                        $scripts_to_dequeue = $this->get_option('dequeue_scripts');
                        if ( !empty($scripts_to_dequeue) ){
                            $this->check_dequeue_rules($scripts_to_dequeue, 'scripts');
                        }
                    }
                }

                $this->timer($timer_name, 'end');
            }
        }

Override

To override this PHP function, use this hook in your child theme or plugin ("my_custom" can be changed):

PHP

add_filter('pre_nebula_dequeues', 'my_custom_dequeues'); 
function my_custom_dequeues(){ 
    //Write your own code here

    return true; //Return true to prevent the original function from running afterwords
}

You can completely disable this PHP function with a single line actions:

PHP

 add_filter('pre_nebula_dequeues', '__return_false');

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