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ccn/Packages/Utility
javier 5f4316b85b Added the Utility package (#29)
This PR contains the work done to create the new **Utility** package within the project, and also included in it the `NormalizeEmail` method, as it's not something that belongs to the **Infrastructure** package.

Reviewed-on: rock-n-code/loud-amsterdam#29
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
2026-08-01 11:15:27 +00:00
..
2026-08-01 11:15:27 +00:00
2026-08-01 11:15:27 +00:00
2026-08-01 11:15:27 +00:00

Utility

The general-purpose helpers the Loud services share: small, single-purpose methods with no dependencies beyond Foundation and no ties to any web framework.

Overview

The package provides, grouped by role:

Role Types
Validation NormalizeEmail, which reduces a submitted email address to its canonical form

Design rules

  • Dependency-free. A helper belongs here only while it needs nothing beyond Foundation; one that grows a framework dependency belongs in the package owning that framework's concerns (e.g. Infrastructure for Hummingbird).
  • Method structs. Helpers hold their lifetime-fixed configuration in init and take only per-call inputs in callAsFunction.

Layout

Sources are split by visibility, then by kind, one type per file:

Sources/
└── Public/
    └── Methods/           NormalizeEmail
Tests/
├── Cases/                 the test suites, mirroring the Sources/ layout
└── Utils/                 the suite Tag constants

Testing

Every suite carries a tag naming the kind of API it exercises — .method, declared in Tests/Utils/Extensions/Tag+Constants.swift — so test plans and result summaries can slice the run by kind. A new suite must adopt the tag matching its subject (or add a tag there if none fits).

Requirements

  • Swift 6.3 toolchain (swift-tools-version:6.3).
  • macOS 15, matching the sibling Infrastructure, Localization, and Persistence packages (the services deploy to Linux containers; the packages carry no UI platforms).
  • No package dependencies — Foundation only.