Data Io Bundle Laravel Package

Getting Started

This assessment is based on the v0.8 release note, which only states “added loader interface.” Treat the loader contract as the package’s primary extension point until the README and source confirm otherwise.

1. Locate the contract first. Open the package source and find the new Loader interface. Note:
   • Method names and signatures.
   • Return types (void, mixed, typed DTOs, iterables).
   • Whether it declares exceptions or expects them to bubble.
2. Find the default binding. Check the package service provider for bind, singleton, or a manager-style resolver that maps the interface to a concrete loader. That tells you what you get by default and how to swap it.
3. Check for published configuration. Run the usual php artisan vendor:publish discovery step and inspect config/ for loader selection, source paths, or driver names.
4. Smoke-test in Tinker. Resolve the loader from the container and invoke it against the smallest possible input:

$loader = app(\Vendor\Package\Contracts\Loader::class);
$loader->load(/* minimal argument */);

First realistic use case: resolve the default loader, load one resource through it, then implement the interface for your own source (database, API, filesystem, etc.). Because v0.8 is pre-1.0, verify the contract before committing production code to it.

Implementation Patterns

Type-hint the interface, never the concrete class. This is the whole point of the new contract and keeps you insulated from internal implementation changes:

public function __construct(private \Vendor\Package\Contracts\Loader $loader) {}

Bind custom loaders in your own service provider. Keep package code untouched:

$this->app->bind(
    \Vendor\Package\Contracts\Loader::class,
    \App\Support\ApiLoader::class
);

Use singleton if the loader is stateless and safe to reuse; use bind if it carries per-resolution state.

Use contextual binding when multiple loaders are needed. If the package resolves the interface from the container in several places, bind different implementations per consumer rather than introducing global switches.

Decorate rather than fork. Wrap the default or your own loader to add caching, logging, retries, or metrics:

final class CachingLoader implements Loader
{
    public function __construct(
        private Loader $inner,
        private CacheRepository $cache,
    ) {}

    public function load(mixed $input): mixed
    {
        return $this->cache->remember(
            'loader:'.md5(serialize($input)),
            now()->addMinutes(10),
            fn () => $this->inner->load($input)
        );
    }
}

Test against the contract. Fake or stub the interface in unit tests, and keep one integration test that exercises the real default loader. If the package ships a fake, prefer it; otherwise a simple anonymous class is enough.

Config-driven selection. If the package exposes a config key for the loader or driver, keep environment-specific choices in config and resolve the implementation through the container rather than branching on env() inside application code.

Gotchas and Tips

• Pre-1.0 instability. v0.8 is an early release. The loader interface may change signature in v0.9 or v1.0. Pin the version in composer.json and read the changelog before upgrading.
• Verify the binding, not the docs. The release note is one line. If container resolution fails, check whether the package provider is auto-discovered (extra.laravel.providers) or must be registered manually in bootstrap/providers.php.
• Watch return types. A new interface often means strict return types. If your implementation returns array where the contract expects iterable or a specific DTO, PHP will fail at runtime, not at bind time. Run a real load in a test early.
• Don’t instantiate the loader directly. Always resolve through the container; direct construction bypasses your bindings and any package-level decoration.
• Inspect the binding in Tinker. app()->make(Loader::class) and get_class(...) confirms which implementation is actually active. This is the fastest way to debug “my custom loader isn’t being used.”
• Mind I/O side effects. Loaders typically touch files, databases, or HTTP. Check whether the default implementation caches, retries, or throws on missing input; add your own caching decorator if not.
• Extension point to watch. The interface itself is the intended extension point. Implement it, bind it, and keep your implementation free of package internals so future releases are low-risk. If the package later adds a manager or driver registry, migrate your binding there rather than fighting it.