function counters () {
  return sharp.counters();
}
Provides access to internal task counters.
- queue is the number of tasks this module has queued waiting for _libuv_ to provide a worker thread from its pool.
- process is the number of resize tasks currently being processed.

@example
const counters = sharp.counters(); // { queue: 2, process: 4 }

@returns {Object}