Sample

Registering class mixins on Carbon and CarbonImmutable with explicit Closure return type hints requires version 3.11.3+ to prevent reflection from skipping macro registration

sha256:6656d05765ce95a36ec3ba27e1ee3a5d19e07d174e99b805e672f96f310e2bd0

Case

Goal

Registering class mixins on Carbon and CarbonImmutable with explicit Closure return type hints requires version 3.11.3+ to prevent reflection from skipping macro registration HOW

Packages

nesbot/carbon 3.11.3

Environment

php

Created

2026-08-16T08:49:56Z

Contract

• assert Carbon::mixin registers methods declaring : Closure return type hint as macros
• assert CarbonImmutable::mixin registers methods declaring : Closure return type hint as macros
• assert invoking : Closure macro on Carbon instance mutates and returns Carbon instance
• assert invoking : Closure macro on CarbonImmutable instance returns new instance without mutating original
• assert mixin methods declaring : callable return type hint are registered and callable
• assert untyped mixin methods are registered and callable
• assert non-callable helper methods returning primitive types like : int or : string are excluded from macro registration

Files

• NOTES.md
• composer.json
• composer.lock
• csx.json
• src/CustomDateMixin.php
• test/contract.php

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

• php 8 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · composer@1 · 2026-08-16 · ed25519:d91480838ac982c9