Drupal 7 module funcitons for including angular app into page/block

MYMODULE.page.inc

/**
 * Page for application.
 */
function MYMODULE_application_page_callback() {

  global $user;

  drupal_add_html_head([
    '#tag' => 'base',
    '#attributes' => array(
      'href' => '/MYMODULE_PATH',
    ),
  ],

  list($assets_js, $assets_css) = MYMODULE_get_application_assets();
  return [
    '#theme' => 'MYMODULE_MYAPP',
    '#data' => [
      'uuid' => $user->uuid, // Required if requesting/posting back data
      'csrf' => drupal_get_token('services'), // Required if requesting/posting back data
      'js' => $assets_js,
      'css' => $assets_css
    ],
  ];
}

/**
 * Implements hook_theme().
 */
function MYMODULE_theme() {
  // @see https://gist.github.com/paullinney/55a9f6052229432e645bc63c269aa950
  return array(
    'MYMODULE_MYAPP' => array(
      'render_element' => 'element',
      'variables' => array('data' => NULL),
      'template' => 'templates/MYMODULE_MYAPP',
    ),
  );
}

/**
 * Scan app dist folder and return webpack bundles in correct order.
 */
function MYMODULE_get_application_assets() {
  $application_dist_path = '/app/dist';
  $path = drupal_get_path('module', 'MYMODULE') . $application_dist_path;
  $files = file_scan_directory(dirname(__DIR__) . $application_dist_path, '/(js|css)$/', ['recurse' => FALSE]);
  $assets_js = $assets_css = [];

  $asset_order = [
    'inline',
    'polyfills',
    'scripts',
    'vendor',
    'main',
    'styles'
  ];

  foreach ($asset_order as $asset) {
    if (preg_match('/^styles$/', $asset)) {
      $assets_css[] = $path . '/' . MYMODULE_application_assets_ordering($asset, $files);
    }
    else {
      $assets_js[] = $path . '/' . MYMODULE_application_assets_ordering($asset, $files);
    }
  }

  return [$assets_js, $assets_css];
}

function MYMODULE_application_assets_ordering($asset, $files){
  foreach ($files as $file) {
    if (preg_match('/^(' . $asset . ')\.(.*)\.bundle\.(js|css)$/', $file->filename)) {
      return $file->filename;
      break;
    }
  }
}