Fix WooCommerce Product Bundles to appear as individual items in Print Invoices & Packing Lists' packing lists.

show-bundled-items-individually-in-pip-packing-lists.php

<?php
/**
 * @see https://woocommerce.com/products/print-invoices-packing-lists/
 * @see https://woocommerce.com/products/product-bundles/
 */

$show_bundled_items_individually_in_packing_lists = function( string $type, \WC_PIP_Document $document, \WC_Order $order ) {
	if ( 'packing-list' !== $type ) {
		return;
	}

	// Nothing to do.
	if( !class_exists(\WC_PB_PIP_Compatibility::class )) {
	    return;
    }

    /**
     * @see \WC_PIP_Document::get_table_row_order_item_data()
     */
    $hide_product_bundle_items = function( bool $visible, \WC_Order_Item_Product $item, string $type ) {

        $product = $item->get_product();

        if ( $product instanceof \WC_Product_Bundle ) {
            return false;
        }

        return $visible;
    };
    add_filter( 'wc_pip_order_item_visible', $hide_product_bundle_items, 10, 3 );

    /**
     * Remove the hooks added by WooCommerce Product Bundles.
     *
     * @see \WC_PB_PIP_Compatibility::init()
     */
    remove_action( 'wc_pip_before_body', array( \WC_PB_PIP_Compatibility::class, 'before_body' ), 10 );
    remove_action( 'wc_pip_after_body', array( \WC_PB_PIP_Compatibility::class, 'after_body' ), 10 );
    remove_filter( 'wc_pip_order_items_count', array( \WC_PB_PIP_Compatibility::class, 'items_count' ), 1000 );
    remove_filter( 'wc_pip_document_table_row_item_data', array( \WC_PB_PIP_Compatibility::class, 'row_item_data' ), 10 );
    remove_filter( 'wc_pip_document_table_rows', array( \WC_PB_PIP_Compatibility::class, 'table_rows' ), 52 );
    remove_filter( 'wc_pip_document_table_product_class', array( \WC_PB_PIP_Compatibility::class, 'bundled_item_class' ), 10 );
    remove_filter( 'wc_pip_order_item_name', array( \WC_PB_PIP_Compatibility::class, 'bundled_item_name' ), 10 );
    remove_action( 'wc_pip_order_item_meta_end', array( \WC_PB_PIP_Compatibility::class, 'add_assembled_order_item_meta' ), 10 );
    remove_filter( 'wc_pip_packing-list_hide_virtual_item', array( \WC_PB_PIP_Compatibility::class, 'hide_item' ), 10 );
    remove_filter( 'wc_pip_packing-list_list_group_item_as_uncategorized', array( \WC_PB_PIP_Compatibility::class, 'group_bundled_items_as_uncategorized' ), 10 );
    remove_action( 'wc_pip_styles', array( \WC_PB_PIP_Compatibility::class, 'add_styles' ) );
};

/**
 * @see woocommerce-pip/templates/pip/head.php
 */
add_action( 'wc_pip_head', $show_bundled_items_individually_in_packing_lists, 10, 3 );