Rpc.decide: def of ezmcp@0.1.0.0
Import: import ezmcp@0.1.0.0/src/rpc.bend as Rpc
Lines 195-202 of ezmcp@0.1.0.0/src/rpc.bend: https://jend.leeeet.dev/read.txt?path=ezmcp@0.1.0.0/src/rpc.bend&start_line=195&end_line=202

import Base
import emerging-ezjson@1.2.0.0/main.bend as Json

# what a message is, from its fields
def decide(head: Head) -> Msg:
  match head:
    case Head{obj, v2, has_id, id_ok, id, method, params, has_result, has_error}:
      Bool.pick(Msg, obj,
        decide.v2(v2, has_id, id_ok, id, method, params, has_result,
          has_error),
        Junk{Json.null(), "Invalid Request: not a JSON-RPC object"})

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.pick
  https://jend.leeeet.dev/definition.txt?path=emerging-ezjson@1.3.0.0/main.bend&name=null
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/rpc.bend&name=Head
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/rpc.bend&name=Msg
  https://jend.leeeet.dev/definition.txt?path=ezmcp@0.1.0.0/src/rpc.bend&name=decide.v2