wticreatorstudio/Modules/RegistrationAgreement/Services/AugmentationService.php

<?php
namespace Modules\RegistrationAgreement\Services;

class AugmentationService
{
    public function __construct() {
        $this->addAgreementCheckbox();
    }

    public static function addAgreementCheckbox() {
        if (isModuleActive('RegistrationFormSteps')) {
            $path = module_path('RegistrationFormSteps', 'Resources/views/customer/steps/_summary.blade.php');
            if (file_exists($path)) {
                $update = false;
                $content = file_get_contents($path);

                if (!preg_match("/@include\('registrationagreement::components\.agreement_checkbox'\)/", $content)) {
                    $matches = null;
                    preg_match("/@include\('registrationformsteps::payments\.stripe_payment'\)/", $content, $matches);
                    if (count($matches) > 0) {
                        $code = $matches[0];
                        $snippet = "
            @if (isModuleActive('RegistrationFormSteps'))
                 @include('registrationagreement::components.agreement_checkbox')
            @endif

            @include('registrationformsteps::payments.stripe_payment')
                        ";
                        $code = $snippet;
                        $content = preg_replace("/@include\('registrationformsteps::payments\.stripe_payment'\)/", $code, $content);
                         $update = true;
                    }
                }

                if ($update) {
                    file_put_contents($path, $content);
                }
            }
        }
    }   
}