Bytes.unb64.if: def of bend-kit-bytes@0.3.3.0
Import: import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes
Lines 752-758 of bend-kit-bytes@0.3.3.0/bytes.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&start_line=752&end_line=758

import Base

def unb64.if(ok: Bool, +s: String, +n: U32, +pads: U32) -> Maybe<&1, Bytes>:
  match ok:
    case True{}:
      +len = ((n >> 2n) * 3 - pads : U32)
      decoded(len, unb64.go(s, alloc(len), 0, 0, True{}, len, (n - pads : U32)))
    case False{}:
      None{}

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shrn
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=Bytes
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=alloc
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=decoded
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=unb64.go