Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0
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Reference: Values and types

Values and types · rule

type.unknown_field

Type has no such field.

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

example
type ProductName = Text {    max_length: 120}type Product = Object {    name: ProductName}function build_product(name: ProductName) -> Product {    return Product {        name: name        title: name    }}
text
error: `Product` has no field `title` --> main.jadpo:12:9   |12 |         title: name   |         ^^^^^ not declared  reason: `Product`'s fields are `name`.  next: Remove `title`, or declare it on `Product` (agent)  rule: type.unknown_field  help: https://jadpo.dev/docs/errors/type.unknown_fieldcheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/type.unknown_field.md.Built from Jadpo main at a707efb.