filesize -package:basement -package:ghc -package:directory -package:turtle -package:base -package:ghc-lib is:exact

fileSize :: FileStatus -> FileOffset
unix System.Posix.Files System.Posix.Files.ByteString System.Posix.Files.PosixString, unix-compat System.PosixCompat.Files
Size of the file in bytes. If this file is a symbolic link the size is the length of the pathname it contains.
fileSize :: StreamFileStatus -> Int64
http-client Network.HTTP.Client Network.HTTP.Client.Internal, http-conduit Network.HTTP.Client.Conduit
fileSize :: SimpleStat -> FileOffset
MissingH System.IO.HVFS.InstanceHelpers
Set to 0 if unknown or a directory
fileSize :: FileStatusCompat -> FileOffset
MissingH System.IO.StatCompat
fileSize :: FindClause FileOffset
filemanip System.FilePath.Find
fileSize :: FileInfo -> !FileOffset
tar-conduit Data.Conduit.Tar.Types
File size