def png.passes.bytes
import gralha-png-decode@0.1.0.1/png.bend as Pngimport Base
141def png.passes.bytes(xs: List<&2, PNGPass>, total: U32) -> U32:
142 match xs:
143 case Nil{}: total
144 case Con{h, t}: png.passes.bytes(t, (total + png.pass.bytes(h) : U32))