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

Errors Logic · rule

`failure.outcome_missing_arm`

Outcome match does not handle every failure.

Area 3, Logic; not declinable; the next step is usually the agent's.

example

function missing_failure(key: LookupKey) -> LookupResult {    return match lookup(key) {        success(value) -> value        LookupMissing -> "missing"    }}

jadpo checkcheck failed: 1 error, 2 files

error This match doesn't handle LookupRefused

--> main.jadpo:2:12

  |2 |     return match lookup(key) {  |            ^^^^^^^^^^^^^^^^^ failures not handled

reason: lookup(...) can fail with LookupMissing and LookupRefused, and a match on its outcome has an arm for every one: a value, reject or propagate.
next: Add an arm for LookupRefused (agent)
rule: failure.outcome_missing_arm
help: https://jadpo.dev/docs/errors/failure.outcome_missing_arm

Markdown for agents: /docs/errors/failure.outcome_missing_arm.md.Built from Jadpo main at aee2e8f.