Multipart.decoder: def of bend-kit-multipart@0.3.0.0
Import: import bend-kit-multipart@0.3.0.0/multipart.bend as Multipart
Lines 602-605 of bend-kit-multipart@0.3.0.0/multipart.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-multipart@0.3.0.0/multipart.bend&start_line=602&end_line=605

import Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes

# A decoder for boundary b. It starts with a CRLF, so a delimiter at the very start is found like any other.
def decoder(b: String) -> Dec:
  +delim = "\r\n--" ++ b
  Dec{delim, Bytes.count(delim, 0), Pre{}, Bytes.from_string("\r\n")}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.append
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=count
  https://jend.leeeet.dev/definition.txt?path=bend-kit-bytes@0.3.3.0/bytes.bend&name=from_string
  https://jend.leeeet.dev/definition.txt?path=bend-kit-multipart@0.3.0.0/multipart.bend&name=Dec
  https://jend.leeeet.dev/definition.txt?path=bend-kit-multipart@0.3.0.0/multipart.bend&name=Stage