text: const defaultSettings = {
  	elements_selector: "img",
  	container: document,
  	threshold: 300,
  	data_src: "src",
  	data_srcset: "srcset",
  	data_sizes: "sizes",
  	class_loading: "loading",
  	class_loaded: "loaded",
  	class_error: "error",
  	load_delay: 0,
  	callback_load: null,
  	callback_error: null,
  	callback_set: null,
  	callback_enter: null,
  	to_webp: false
  };
  
  export default customSettings => {
  	return Object.assign({}, defaultSettings, customSettings);
  };
  