README

Laravel integration for typed-registry following Laravel best practices for environment variable and configuration access.

Why?

Laravel's env() and config() helpers return mixed values, making strict type checking difficult. This package provides:

• Type-safe config access - TypedConfig facade and typedConfig() helper with strict return types
• Type-safe env access - typedEnv() helper for use in config files only (following Laravel best practices)
• String-preserving env access - typedEnvString() helper for values that must stay strings (passwords, tokens)
• Intelligent casting - Environment variables automatically cast from strings ("8080" → 8080, "1e3" → 1000.0)
• PHPStan ready - Works seamlessly with static analysis at max level
• Zero runtime overhead - Simple wrappers around Laravel's existing systems

Installation

composer require alexkart/typed-registry-laravel

Requires:

• PHP 8.3+
• Laravel 11+ or 12+ or 13+

The package uses Laravel's auto-discovery feature. The service provider and facade are registered automatically.

Quick Start

Environment Variables in Config Files

Following Laravel Best Practices: Environment variables should ONLY be accessed in config files, never directly in controllers or services.

// config/app.php
return [
    'name' => typedEnv()->getStringOr('APP_NAME', 'Laravel'),
    'debug' => typedEnv()->getBoolOr('APP_DEBUG', false),
    'port' => typedEnv()->getIntOr('APP_PORT', 8080),          // "8080" → 8080
    'timeout' => typedEnv()->getFloatOr('TIMEOUT', 2.5),       // "2.5" → 2.5
    'max_items' => typedEnv()->getInt('MAX_ITEMS'),            // Throws if missing
];

Configuration Access Everywhere

Use the TypedConfig facade or typedConfig() helper in controllers, services, and anywhere else:

use TypedRegistry\Laravel\Facades\TypedConfig;

class UserController
{
    public function index()
    {
        $perPage = TypedConfig::getInt('app.pagination.per_page');
        $appName = TypedConfig::getString('app.name');
        $features = TypedConfig::getStringList('app.enabled_features');

        // Or use the helper
        $timeout = typedConfig()->getFloat('app.timeout');
    }
}

Features

typedEnv() Helper - For Config Files Only

Wraps Illuminate\Support\Env with intelligent type casting for numeric strings:

// config/app.php
return [
    // Automatic type casting from .env strings:
    'port' => typedEnv()->getInt('PORT'),           // "8080" → int(8080)
    'rate' => typedEnv()->getFloat('RATE'),         // "2.5" → float(2.5)
    'limit' => typedEnv()->getFloat('LIMIT'),       // "1e3" → float(1000.0)
    'debug' => typedEnv()->getBool('APP_DEBUG'),    // "true" → bool(true)

    // With defaults (never throws):
    'name' => typedEnv()->getStringOr('APP_NAME', 'Laravel'),
    'timeout' => typedEnv()->getFloatOr('TIMEOUT', 30.0),
];

Casting Rules:

• Numeric strings → int or float based on format (handles scientific notation, leading zeros, whitespace, overflow)
• Boolean strings ("true", "false") → bool (handled by Laravel's Env)
• Null strings ("null", "(null)") → null (handled by Laravel's Env)
• All other strings remain unchanged

typedEnvString() Helper - For String Values

Use this helper when you have environment variables that are semantically strings but may contain only digits (passwords, tokens, API keys):

// config/auth.php
return [
    // Problem: typedEnv() casts "123456" to int, getStringOr returns ''
    // 'password' => typedEnv()->getStringOr('API_PASSWORD', ''),

    // Solution: typedEnvString() keeps all values as strings
    'password' => typedEnvString()->getStringOr('API_PASSWORD', ''),
    'token' => typedEnvString()->getString('API_TOKEN'),
];

Casting Rules:

• All scalar values (string, int, float, bool) → string
• Booleans: true → "1", false → "" (PHP's native casting)
• Null remains null

TypedConfig Facade - Use Anywhere

Wraps Laravel's Config facade with strict typing, no casting:

use TypedRegistry\Laravel\Facades\TypedConfig;

// In controllers, services, jobs, etc.
$driver = TypedConfig::getString('database.default');
$port = TypedConfig::getInt('database.connections.mysql.port');
$options = TypedConfig::getStringMap('database.connections.mysql.options');

// With defaults:
$perPage = TypedConfig::getIntOr('app.pagination.per_page', 15);

Or use the helper function:

$driver = typedConfig()->getString('database.default');

Full API

All three helpers (typedEnv(), typedEnvString(), and TypedConfig) expose the same 20 methods from TypedRegistry:

Primitive Getters

->getString('KEY');   // string - throws if missing/wrong type
->getInt('KEY');      // int
->getBool('KEY');     // bool
->getFloat('KEY');    // float

Nullable Variants

->getNullableString('KEY');  // string|null
->getNullableInt('KEY');     // int|null
->getNullableBool('KEY');    // bool|null
->getNullableFloat('KEY');   // float|null

With Defaults (Never Throws)

->getStringOr('KEY', 'default');  // Returns default if missing/wrong type
->getIntOr('KEY', 8080);
->getBoolOr('KEY', false);
->getFloatOr('KEY', 1.5);

Lists (Sequential Arrays)

->getStringList('KEY');  // list<string>
->getIntList('KEY');     // list<int>
->getBoolList('KEY');    // list<bool>
->getFloatList('KEY');   // list<float>

Maps (Associative Arrays with String Keys)

->getStringMap('KEY');  // array<string, string>
->getIntMap('KEY');     // array<string, int>
->getBoolMap('KEY');    // array<string, bool>
->getFloatMap('KEY');   // array<string, float>

Type Casting Behavior

EnvProvider - Intelligent Casting

The EnvProvider (used by typedEnv()) intelligently casts numeric environment variable strings:

// Integer casting (handles edge cases)
"123"    → int(123)
"-456"   → int(-456)
"0"      → int(0)
"042"    → int(42)     // Leading zeros removed
"-042"   → int(-42)    // Negative with leading zeros
"+42"    → int(42)     // Leading plus removed
" 042 "  → int(42)     // Whitespace trimmed

// Integer overflow protection (values exceeding PHP_INT_MAX/MIN)
"9223372036854775808"  → float(9.223372036854776E+18)  // Too large for int
"-9223372036854775809" → float(-9.223372036854776E+18) // Too small for int

// Float casting (decimal point or scientific notation)
"3.14"   → float(3.14)
"0.0"    → float(0.0)
"1e3"    → float(1000.0)        // Scientific notation
"2.5e-4" → float(0.00025)       // Scientific with decimal
"1E10"   → float(10000000000.0) // Uppercase E
"042.5"  → float(42.5)

// No casting
"Laravel"  → "Laravel"  // Non-numeric
"123abc"   → "123abc"   // Mixed alphanumeric
""         → ""         // Empty string

// Laravel's Env handles these:
"true"     → bool(true)
"false"    → bool(false)
"null"     → null
"(null)"   → null

EnvStringProvider - Cast to String

The EnvStringProvider (used by typedEnvString()) casts all scalar values to strings:

// All values become strings
"123456"   → "123456"   // Numeric string preserved
"3.14"     → "3.14"     // Float string preserved
"1e3"      → "1e3"      // Scientific notation preserved
"042"      → "042"      // Leading zeros preserved
"Laravel"  → "Laravel"  // Non-numeric unchanged

// Laravel's Env converts these first, then we cast to string:
"true"     → "1"        // bool(true) → string
"false"    → ""         // bool(false) → string
"null"     → null       // Stays null (not scalar)

ConfigProvider - No Casting

ConfigProvider performs zero type coercion. Values must be stored with the correct type:

// config/app.php
return [
    'port' => 8080,        // ✅ int - TypedConfig::getInt() works
    'port_str' => '8080',  // ❌ string - TypedConfig::getInt() throws
];

Error Handling

Strict Getters Throw on Type Mismatch

use TypedRegistry\RegistryTypeError;

try {
    $port = TypedConfig::getInt('app.name'); // If 'app.name' is a string
} catch (RegistryTypeError $e) {
    // "[typed-registry] key 'app.name' must be int, got 'Laravel'"
}

Default Getters Never Throw

// Returns default value on missing key OR type mismatch
$port = typedEnv()->getIntOr('NONEXISTENT_PORT', 8080);  // 8080
$timeout = TypedConfig::getFloatOr('cache.timeout', 3.0); // 3.0

Real-World Example

// config/app.php
return [
    'name' => typedEnv()->getStringOr('APP_NAME', 'Laravel'),
    'env' => typedEnv()->getStringOr('APP_ENV', 'production'),
    'debug' => typedEnv()->getBoolOr('APP_DEBUG', false),
    'url' => typedEnv()->getStringOr('APP_URL', 'http://localhost'),

    'timezone' => 'UTC',

    'locale' => typedEnv()->getStringOr('APP_LOCALE', 'en'),

    'providers' => [
        // Service providers...
    ],
];

// app/Http/Controllers/DashboardController.php
use TypedRegistry\Laravel\Facades\TypedConfig;

class DashboardController extends Controller
{
    public function index()
    {
        $appName = TypedConfig::getString('app.name');
        $isDebug = TypedConfig::getBool('app.debug');
        $locale = TypedConfig::getString('app.locale');

        return view('dashboard', compact('appName', 'isDebug', 'locale'));
    }
}

PHPStan Integration

The package works seamlessly with PHPStan at max level:

/** @var int $port */
$port = TypedConfig::getInt('app.port'); // PHPStan knows this is int

/** @var list<string> $hosts */
$hosts = TypedConfig::getStringList('app.hosts'); // PHPStan knows the shape

Development

# Install dependencies
composer install

# Run tests
composer test
# or: vendor/bin/phpunit

# Run static analysis
composer phpstan
# or: vendor/bin/phpstan analyse

Quality Standards:

• PHPStan Level: Max (10) with strict rules
• Test Coverage: All providers and facades
• PHP Version: 8.3+
• Laravel Version: 11+, 12+, 13+

Comparison with Core Package

Contributing

Contributions are welcome! Please ensure:

1. All tests pass (vendor/bin/phpunit)
2. PHPStan Level 10 passes (vendor/bin/phpstan analyse)
3. Code follows existing style (strict types, final classes)

License

MIT License. See LICENSE for details.

Credits

• Built on alexkart/typed-registry
• Maintained by the TypedRegistry contributors

Questions? Open an issue on GitHub.