Manually Enqueue Gravity Forms scripts for Gravity Forms Product Addons

functions.php

<?php


add_action( 'wp_enqueue_scripts', 'add_gravity_forms_scripts' );

function add_gravity_forms_scripts() {

	if ( ! class_exists( 'WC_GFPA_Main' ) ) {
		return;
	}

	$PRODUCT_ID = 100;
	if (is_page()) {
		$product           = wc_get_product( $PRODUCT_ID );
		$gravity_form_data = wc_gfpa()->get_gravity_form_data( $PRODUCT_ID );
		if ( $gravity_form_data && is_array( $gravity_form_data ) ) {
			wp_enqueue_style( 'wc-gravityforms-product-addons', WC_GFPA_Main::plugin_url() . '/assets/css/frontend.css', null );

			gravity_form_enqueue_scripts( $gravity_form_data['id'], false );

			$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';

			if ( WC_GFPA_Compatibility::is_wc_version_gte_2_5() ) {
				wp_register_script( 'accounting', WC()->plugin_url() . '/assets/js/accounting/accounting' . $suffix . '.js', array( 'jquery' ), '0.4.2' );
			} else {
				wp_register_script( 'accounting', WC()->plugin_url() . '/assets/js/admin/accounting' . $suffix . '.js', array( 'jquery' ), '0.4.2' );
			}

			wp_enqueue_script( 'wc-gravityforms-product-addons', WC_GFPA_Main::plugin_url() . '/assets/js/gravityforms-product-addons.js', array(
				'jquery',
				'accounting'
			), '3.2.4', true );

			$prices = array(
				$product->get_id() => wc_get_price_to_display( $product ),
			);

			if ( $product->has_child() ) {
				foreach ( $product->get_children() as $variation_id ) {
					$variation               = wc_get_product( $variation_id );
					$prices[ $variation_id ] = wc_get_price_to_display( $variation );
				}
			}

			// Accounting
			wp_localize_script( 'accounting', 'accounting_params', array(
				'mon_decimal_point' => wc_get_price_decimal_separator()
			) );

			$wc_gravityforms_params = array(
				'currency_format_num_decimals' => wc_get_price_decimals(),
				'currency_format_symbol'       => get_woocommerce_currency_symbol(),
				'currency_format_decimal_sep'  => esc_attr( wc_get_price_decimal_separator() ),
				'currency_format_thousand_sep' => esc_attr( wc_get_price_thousand_separator() ),
				'currency_format'              => esc_attr( str_replace( array( '%1$s', '%2$s' ), array(
					'%s',
					'%v'
				), get_woocommerce_price_format() ) ), // For accounting JS
				'prices'                       => $prices,
				'price_suffix'                 => array( $product->get_id() => $product->get_price_suffix() ),
				'use_ajax'                     => array( $product->get_id() => apply_filters( 'woocommerce_gforms_use_ajax', isset( $gravity_form_data['use_ajax'] ) ? ( $gravity_form_data['use_ajax'] == 'yes' ) : false ) )
			);

			wp_localize_script( 'wc-gravityforms-product-addons', 'wc_gravityforms_params', $wc_gravityforms_params );
		}
	}
}

Note: $PRODUCT_ID = 100; needs to be changed to the product ID that you're using this for.