Removed es6 changes breaking on IE (#270)
Removed es6 changes breaking on IE (#270)

Co-authored-by: Azhar <e06d6e729196c564869a2c58b1ba7b1454a04b25@L1119.local>
PubMatic/OpenWrap,PubMatic/OpenWrap,PubMatic/OpenWrap,PubMatic/OpenWrap