mongose.js

const find = ( Model ) => ( query, sort = {} ) =>
  Model.find({}).or( query ).sort( sort ).exec()

const findOne = ( Model ) => ( query, populate = '' ) =>
  Model.findOne( query ).populate( populate ).exec()

const count = ( Model ) => ( query ) =>
  Model.count( query ).exec()

const save = ( Model ) =>
  Model.save().then()

using.js

const test = async () => {
  let user = await findOne( UserModel )( { email: email } )
}