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

`semantic.unreachable_code`

Code can never run.

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

example

type Count = Int {    min: 0}type Size = Text {}function size_of(count: Count) -> Size {    return "small"    if (count > 10) {        return "large"    }}

jadpo checkcheck failed: 1 error, 1 file

error This code never runs

--> main.jadpo:9:5

  |8 |     return "small"  |     -------------- leaves on every path9 |     if (count > 10) {  |     ^^^^^^^^^^^^^^^^^ never reached

reason: The statement before it ends in return or reject on every path, so nothing after it in this block can run.
next: Remove it, or move it before the statement that leaves (agent)
rule: semantic.unreachable_code
help: https://jadpo.dev/docs/errors/semantic.unreachable_code

Markdown for agents: /docs/errors/semantic.unreachable_code.md.Built from Jadpo main at aee2e8f.