Implement STATES on drupal8

mymodule.php

<?php
  $formIds = [
    'node_location_form',
    'node_location_edit_form',
  ];
  if (in_array($form_id, $formIds)) {
    $form['#attached']['library'][] = 'care_location/care_location_node_form';
    $form['field_location_google_streetview']['#states'] = [
      'visible' => [
        ':input[name="field_location_what_to_display"]' => ['value' => 'field_location_google_streetview'],
      ]
    ];
    $form['field_location_images']['#states'] = [
      'visible' => [
        ':input[name="field_location_what_to_display"]' => ['value' => 'field_location_images'],
      ]
    ];
    $form['field_location_images_modal']['#states'] = [
      'visible' => [
        ':input[name="field_location_what_to_display"]' => ['value' => 'field_location_images'],
      ]
    ];
  }