drupal-8.email_widget_size_setting-2578741.php

<?php


/**
 * @file
 * Contains SQL necessary to add a new component for an email field/widget to
 * the 'node.article.default' entity form display.
 */
use Drupal\Core\Database\Database;
$connection = Database::getConnection();
$config = $connection->select('config', 'c')
    ->fields('c')
    ->condition('collection', '')
    ->condition('name', 'core.entity_form_display.node.article.default')
    ->execute()
    ->fetchAssoc();
$data = unserialize($config['data']);
// Manually add a new component that simulates an email field using the default
// email widget.
$data['content']['field_email_2578741'] = [
    'weight' => 20,
    'settings' => [
        'placeholder' => '',
    ],
    'third_party_settings' => [],
    'type' => 'email_default',
];
$connection->update('config')
    ->fields([
    'data' => serialize($data),
])
    ->condition('collection', '')
    ->condition('name', 'core.entity_form_display.node.article.default')
    ->execute();