// monkeypath Session.current to memoize 
var original = Parse.Session.current
Parse.Session.current = async (original) => {
  let delay = 400
  if( Parse.Session.group != undefined ){
    //console.log("caching request for "+delay+" ms")
    return new Promise( (resolve,reject) => Parse.Session.group.push(resolve) )  
  }
  Parse.Session.group = []
  return new Promise( async (resolve,reject) => {
    Parse.Session.group.push(resolve)
    var res = await original()
    setTimeout( () => {
      Parse.Session.group.map( (r) => r(res) )
      delete Parse.Session.group
    },delay)

  })
}
Parse.Session.current = Parse.Session.current.bind(Parse.Session,original)