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
jadpo
Reference: Tooling

Tooling · rule

publish.breaking_change

Package's surface breaks its last release within one major version.

Area 14, Tooling; not declinable; the next step is usually the human's.

A version keeps every promise of the release before it in the same major version: here uk.tidy takes a UkPostcode instead of an EnteredPostcode, which went:

text
$ jadpo package checkerror: `Postcodes.v2` changed in ways that break the apps that use it  reason: Since 2.0.0, `function uk.tidy` changed and `type EnteredPostcode` was removed, which an app using 2.0.0 may rely on. A breaking change is a new major version: a new package beside this one.  next: Put back what changed, or publish the change as `Postcodes.v3` in a folder of its own (human)  rule: publish.breaking_change  help: https://jadpo.dev/docs/errors/publish.breaking_changePublishing bar  compiles      passed                        no errors  described     passed                        every public declaration  examples      passed                        1 example, every failure shown  tests         passed                        no tests  version       failed                        2 breaking changes since 2.0.0  changelog     not checked yet               waits for an allowed version  licence       passed                        mit, from Jadpo 1.0package check failed: 1 failed, 5 passed, 1 not checked yet

Markdown for agents: /docs/errors/publish.breaking_change.md.Built from Jadpo main at a707efb.