Parabuild.php

<?php

use Drupal\node\Entity\Node;
use \Drupal\node\Entity\NodeType;
use Drupal\paragraphs\Entity\Paragraph;

include_once 'core/tests/Drupal/Tests/TestFileCreationTrait.php';
include_once 'core/tests/Drupal/Tests/RandomGeneratorTrait.php';
include_once 'modules/paragraphs/tests/src/FunctionalJavascript/ParagraphsTestBaseTrait.php';

/*
d8reset;
vendor/bin/drush si -y -vd standard --account-mail=alex@vit-al.com --account-name=admin --account-pass=admin --db-url=mysql://dev:dev@localhost/drupal8alt;sudo chmod -R 777 ./sites/default/files; sudo chmod 644 ./sites/default/settings.php
vendor/bin/drush en paragraphs simple_sitemap -y;
vendor/bin/drush scr paragraphs.php;
*/

class ParaBuild {
  use \Drupal\Tests\paragraphs\FunctionalJavascript\ParagraphsTestBaseTrait;
  use \Drupal\Tests\RandomGeneratorTrait;

  public function doIt() {
    if (NodeType::load('paragraphed_test')) {
      return;
    }
    $this->addParagraphedContentType('paragraphed_test', 'field_paragraphs');
    $this->addParagraphsType('paragraphs_container');
    $this->addParagraphsType('text');
    $this->addFieldtoParagraphType('text', 'field_text', 'text');
    $this->addParagraphsField('paragraphs_container', 'paragraphs_container_paragraphs', 'paragraph');
    \Drupal::service('simple_sitemap.generator')->setBundleSettings('node', 'paragraphed_test', [
      'index' => TRUE,
      'priority' => 0.5,
      'changefreq' => 'hourly',
    ]);
  }

    public function createNode() {
      // Create text paragraph.
      $text_paragraph_1 = Paragraph::create([
        'type' => 'text',
        'field_text' => [
          'value' =>  $this->getRandomGenerator()->sentences(20),
          'format' => 'plain_text',
        ],
      ]);
      $text_paragraph_1->save();

      // Create a second text paragraph.
      $text_paragraph_2 = Paragraph::create([
        'type' => 'text',
        'field_text' => [
          'value' => $this->getRandomGenerator()->sentences(20),
          'format' => 'plain_text',
        ],
      ]);
      $text_paragraph_2->save();

      // Create container that contains the first two text paragraphs.
      $paragraph = Paragraph::create([
        'type' => 'paragraphs_container',
        'paragraphs_container_paragraphs' => [$text_paragraph_1, $text_paragraph_2],
      ]);
      $paragraph->save();

      // Add test content with paragraph container.
      $node = Node::create([
        'type' => 'paragraphed_test',
        'title' => $this->getRandomGenerator()->sentences(5),
        'field_paragraphs' => [$paragraph],
      ]);
      $node->save();
    }
}

$builder = new ParaBuild();
$builder->doIt();
for ($i =0; $i < 5000; $i++) {
  $builder->createNode();
}