Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0

ReferenceErrors

`type.copy_cycle`

Type includes its own fields.

Area 2, Values and types; not declinable; the next step is usually the agent's.

An include that leads back to its own type would copy its fields from themselves:

example

type Title = Text {}type TodoView = Output {    include: [ListView]    title: Title}type ListView = Output {    include: [TodoView]}

jadpo checkcheck failed: 1 error, 1 file

error ListView includes its own fields

--> main.jadpo:9:15

  |9 |     include: [TodoView]  |               ^^^^^^^^ leads back here

reason: TodoView leads back to ListView through its own include, so its fields would be copied from themselves and the type could never be written out.
next: Remove TodoView from include, or write the fields it needs (agent)
rule: type.copy_cycle
help: https://jadpo.dev/docs/errors/type.copy_cycle

Markdown for agents: /docs/errors/type.copy_cycle.md.Built from Jadpo main at aee2e8f.