use type Ytake\HHConfigAggreagator\ArrayProvider;
use type Ytake\HHConfigAggreagator\ConfigAggreagator;
use type Ytake\HHConfigAggreagator\PhpFileProvider;

$aggregator = new ConfigAggreagator(
  vec[
    new PhpFileProvider(
      __DIR__.'/resources/config/{{,*.}global,{,*.}local}.{hack,hackpartial}',
    ),
    new ArrayProvider(['config_cache_enabled' => true])
  ],
  __DIR__.'/resources/cached.config.cache.hackpartial'
);
$aggregator->getMergedConfig();