support for sourcemaps in browser code (#5451)
support for sourcemaps in browser code (#5451)

changed from 'eval' to 'cheap-module-eval-source-map' to 
generate source map of the original code instead of transpiled code.
krishnasrinivas/minio,minio/minio,NitishT/minio,NitishT/minio,jimjag/minio,harshavardhana/minio,aead/minio,harshavardhana/minio,minio/minio,abperiasamy/minio,NitishT/minio,harshavardhana/minio,aead/minio,jimjag/minio,krishnasrinivas/minio,aead/minio,donatello/minio,krisis/minio,abperiasamy/minio,aead/minio,harshavardhana/minio,fwessels/minio,harshavardhana/minio,balamurugana/minio,jimjag/minio,abperiasamy/minio,krishnasrinivas/minio,krishnasrinivas/minio,donatello/minio,fwessels/minio,fwessels/minio,harshavardhana/minio,balamurugana/minio,vadmeste/minio,aead/minio,krisis/minio,aead/minio,vadmeste/minio,abperiasamy/minio,fwessels/minio,jimjag/minio,aead/minio,harshavardhana/minio,aead/minio,harshavardhana/minio,NitishT/minio