packages/node_modules/pouchdb-utils/src/cloneBinaryObject-browser.js

function cloneArrayBuffer(buff) {
  if (typeof buff.slice === 'function') {
    return buff.slice(0);
  }
  // IE10-11 slice() polyfill
  var target = new ArrayBuffer(buff.byteLength);
  var targetArray = new Uint8Array(target);
  var sourceArray = new Uint8Array(buff);
  targetArray.set(sourceArray);
  return target;
}

function cloneBinaryObject(object) {
  if (object instanceof ArrayBuffer) {
    return cloneArrayBuffer(object);
  }
  var size = object.size;
  var type = object.type;
  // Blob
  if (typeof object.slice === 'function') {
    return object.slice(0, size, type);
  }
  // PhantomJS slice() replacement
  return object.webkitSlice(0, size, type);
}

export default cloneBinaryObject;