i am trying to city as dropdown in only checkout page with following script in Magento\Checkout\Block\Cart\LayoutProcessor.php

$  elements = [         'city' => [             'visible' => true,             'formElement' => 'select',             'label' => __('City'),             'options' => [                 [                     'value' => '',                     'label' => 'Please Select',                 ],                 [                     'value' => '1',                     'label' => 'First Option',                 ]             ],             'value' =>  null         ],         'country_id' => [             'visible' => true,             'formElement' => 'select',             'label' => __('Country'),             'options' => [],             'value' => null         ],         'region_id' => [             'visible' => true,             'formElement' => 'select',             'label' => __('State/Province'),             'options' => [],             'value' => null         ],         'postcode' => [             'visible' => true,             'formElement' => 'input',             'label' => __('Zip/Postal Code'),             'value' => null         ]     ]; 

but still it’s showing as input text filed. Any one can please suggest best solution