flickr-justified-gallery/src/utils/ready.js

Flickr's justified images gallery

function ready(callback) {
  if (document.readyState === 'complete' || document.readyState === 'interactive') {
    // Already ready or interactive, execute callback
    callback();
  } else {
    document.addEventListener('DOMContentLoaded', callback, {
      capture: true,
      once: true,
      passive: true,
    });
  }
}

export default ready;