packages/node_modules/pouchdb-utils/src/isBinaryObject-browser.js - pouchdb - Git at Google

 function isBinaryObject(object) {
   return (typeof ArrayBuffer !== 'undefined' && object instanceof ArrayBuffer) ||
     (typeof Blob !== 'undefined' && object instanceof Blob);
 }

 export default isBinaryObject;
	function isBinaryObject(object) {
	return (typeof ArrayBuffer !== 'undefined' && object instanceof ArrayBuffer) \|\|
	(typeof Blob !== 'undefined' && object instanceof Blob);
	}

	export default isBinaryObject;