That's in the removed code. There are two lines that set `bytes`:

`bytes = FS.readFile(filename);`

`bytes = HEAPU8.subarray(rwops.bytes, rwops.bytes + rwops.count);`

Both of these will be `Uint8Array` objects.

> are you concerned about the unneeded overhead in the common case?

Nah, it just was no longer necessary from what I could see. In the grand scheme of things, the overhead from constructing the object is completely negligible.