<?php
$DATABASE = [ [ 'id' => '001' ] ];
?>
class Model {

  constructor() {
    this.data = <?php print(json_encode($DATABASE)); ?> ;
  }

  async fetchList() {
    return this.data.map(item => ({"id": item.id}));
  }

  async fetchItem(identifier) {
    // TODO Iterate this.data and find the right item.
  }

}