packages/node_modules/pouchdb-adapter-idb/src/countDocs.js

import { DOC_STORE } from './constants';

function countDocs(txn, cb) {
  var index = txn.objectStore(DOC_STORE).index('deletedOrLocal');
  index.count(IDBKeyRange.only('0')).onsuccess = function (e) {
    cb(e.target.result);
  };
}

export default countDocs;