Fold.size: def of bend-toon-codec@0.1.0.0
Import: import bend-toon-codec@0.1.0.0/src/fold.bend as Fold
Lines 81-93 of bend-toon-codec@0.1.0.0/src/fold.bend: https://jend.leeeet.dev/read.txt?path=bend-toon-codec@0.1.0.0/src/fold.bend&start_line=81&end_line=93

import Base
import bend-toon-codec@0.1.0.0/src/json.bend as J

# Nodes in a value: the fuel for the fold.
def size(+j: J.Json) -> Nat:
  match j:
    case J.JArr{x}:
      1n+size(x)
    case J.JObj{x}:
      1n+size(x)
    case J.JCons{h, t}:
      1n+Nat.add(size(h), size(t))
    case J.JField{k, v, t}:
      1n+Nat.add(size(v), size(t))
    case _:
      1n

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/json.bend&name=Json