✨ feat: implement core Optimus library for JSON mapping and validation
- 🎨 add Spring-like decorators (@JsonSerialize, @JsonDeserialize, etc.) - ⚙️ implement JsonMapper and metadata storage for transformations - 🧪 add comprehensive test suite using Vitest - 📝 add README, CONTRIBUTING, and API documentation - 👷 setup GitHub Actions CI workflow - 🔧 configure TypeScript and project settings
This commit is contained in:
Enzo Marioni
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Optimus - Spring-like JSON Mapping & Validation for TypeScript</title>
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<script src="https://cdn.tailwindcss.com"></script>
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<script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.2/codemirror.min.css">
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.2/theme/dracula.min.css">
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<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.2/codemirror.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.65.2/mode/javascript/javascript.min.js"></script>
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<script src="optimus.js"></script>
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<style>
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.CodeMirror {
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height: 400px;
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border-radius: 0.5rem;
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font-size: 14px;
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}
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.gradient-text {
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background: linear-gradient(to right, #6366f1, #a855f7, #ec4899);
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-webkit-background-clip: text;
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-webkit-text-fill-color: transparent;
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}
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</style>
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</head>
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<body class="bg-slate-50 text-slate-900 font-sans">
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<nav class="bg-white border-b border-slate-200 sticky top-0 z-50">
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<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
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<div class="flex justify-between h-16 items-center">
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<div class="flex items-center">
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<span class="text-2xl font-bold gradient-text">Optimus</span>
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</div>
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<div class="hidden md:block">
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<div class="ml-10 flex items-baseline space-x-4">
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<a href="#features" class="text-slate-600 hover:text-indigo-600 px-3 py-2 font-medium">Features</a>
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<a href="#playground" class="text-slate-600 hover:text-indigo-600 px-3 py-2 font-medium">Playground</a>
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<a href="#docs" class="text-slate-600 hover:text-indigo-600 px-3 py-2 font-medium">Docs</a>
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<a href="https://github.com/Avalon-Vanguard/optimus" class="bg-indigo-600 text-white px-4 py-2 rounded-md font-medium hover:bg-indigo-700 transition">GitHub</a>
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</div>
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</div>
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</div>
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</div>
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</nav>
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<main>
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<!-- Hero Section -->
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<section class="py-20 px-4">
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<div class="max-w-4xl mx-auto text-center">
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<h1 class="text-5xl md:text-6xl font-extrabold mb-6">
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<span class="gradient-text">Spring-like</span> JSON Mapping <br>& Validation for TypeScript
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</h1>
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<p class="text-xl text-slate-600 mb-10">
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A lightweight library with <span class="font-bold">ZERO external dependencies</span>.
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Simplify your data layer with familiar decorators.
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</p>
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<div class="flex justify-center gap-4">
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<a href="#playground" class="bg-indigo-600 text-white px-8 py-3 rounded-lg text-lg font-semibold hover:bg-indigo-700 shadow-lg shadow-indigo-200 transition">Try on the fly</a>
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<code class="bg-slate-800 text-slate-100 px-6 py-3 rounded-lg text-lg font-mono flex items-center">
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npm install optimus
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</code>
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</div>
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</div>
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</section>
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<!-- Features -->
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<section id="features" class="py-20 bg-white">
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<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
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<h2 class="text-3xl font-bold text-center mb-16">Why Optimus?</h2>
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<div class="grid md:grid-cols-3 gap-8">
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<div class="p-6 rounded-xl bg-slate-50 border border-slate-100">
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<div class="w-12 h-12 bg-indigo-100 rounded-lg flex items-center justify-center mb-4 text-indigo-600">
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<svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z" />
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</svg>
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</div>
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<h3 class="text-xl font-bold mb-2">Blazing Fast</h3>
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<p class="text-slate-600">Zero overhead. Only uses decorators and metadata to handle mapping and validation.</p>
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</div>
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<div class="p-6 rounded-xl bg-slate-50 border border-slate-100">
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<div class="w-12 h-12 bg-purple-100 rounded-lg flex items-center justify-center mb-4 text-purple-600">
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<svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.040L3 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622l-.382-3.016z" />
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</svg>
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</div>
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<h3 class="text-xl font-bold mb-2">Integrated Validation</h3>
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<p class="text-slate-600">Validate while you map. Ensure your data is correct before it even hits your business logic.</p>
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</div>
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<div class="p-6 rounded-xl bg-slate-50 border border-slate-100">
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<div class="w-12 h-12 bg-pink-100 rounded-lg flex items-center justify-center mb-4 text-pink-600">
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<svg xmlns="http://www.w3.org/2000/svg" class="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19.428 15.428a2 2 0 00-1.022-.547l-2.387-.477a2 2 0 00-1.96 1.414l-.477 2.387a2 2 0 00.547 1.022l1.428 1.428a2 2 0 002.828 0l1.428-1.428a2 2 0 000-2.828l-1.428-1.428z" />
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</svg>
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</div>
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<h3 class="text-xl font-bold mb-2">Polymorphism</h3>
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<p class="text-slate-600">Native support for complex hierarchies. Map to the right subclass automatically based on a discriminator.</p>
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</div>
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</div>
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</div>
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</section>
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<!-- Playground -->
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<section id="playground" class="py-20 bg-slate-900 text-white">
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<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
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<div class="flex flex-col md:flex-row justify-between items-center mb-10 gap-4">
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<div>
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<h2 class="text-3xl font-bold">Interactive Playground</h2>
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<p class="text-slate-400 mt-2">Edit the code below and see the result in real-time.</p>
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</div>
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<button id="run-btn" class="bg-indigo-600 hover:bg-indigo-500 px-8 py-3 rounded-lg font-bold transition flex items-center gap-2">
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<svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor">
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<path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM9.555 7.168A1 1 0 008 8v4a1 1 0 001.555.832l3-2a1 1 0 000-1.664l-3-2z" clip-rule="evenodd" />
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</svg>
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Run Code
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</button>
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</div>
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<div class="grid lg:grid-cols-2 gap-6">
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<div>
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<div class="bg-slate-800 rounded-t-lg px-4 py-2 text-sm font-mono text-slate-400 border-b border-slate-700">TypeScript / Optimus</div>
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<textarea id="editor"></textarea>
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</div>
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<div class="flex flex-col">
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<div class="bg-slate-800 rounded-t-lg px-4 py-2 text-sm font-mono text-slate-400 border-b border-slate-700">Output</div>
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<pre id="output" class="bg-slate-950 p-6 rounded-b-lg font-mono text-sm overflow-auto flex-grow" style="height: 400px; color: #a9b7c6;"></pre>
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</div>
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</div>
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</div>
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</section>
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<!-- Docs Summary -->
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<section id="docs" class="py-20 bg-white">
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<div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
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<h2 class="text-3xl font-bold text-center mb-16">Available Decorators</h2>
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<div class="grid md:grid-cols-2 lg:grid-cols-3 gap-6">
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<div>
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<h3 class="font-bold text-lg mb-4 text-indigo-600">Mapping</h3>
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<ul class="space-y-2 text-slate-600">
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<li><code class="text-sm bg-slate-100 p-1 rounded">@JsonSerialize(cls)</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@JsonDeserialize(cls)</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@JsonType(() => cls)</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@JsonPolymorphic(field, types)</code></li>
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</ul>
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</div>
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<div>
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<h3 class="font-bold text-lg mb-4 text-purple-600">Basic Validation</h3>
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<ul class="space-y-2 text-slate-600">
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<li><code class="text-sm bg-slate-100 p-1 rounded">@IsString()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@IsNumber()</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@IsInt()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@IsBoolean()</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@IsDate()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@IsObject()</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@IsNotEmpty()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@IsDefined()</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@Positive()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@Negative()</code></li>
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</ul>
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</div>
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<div>
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<h3 class="font-bold text-lg mb-4 text-pink-600">Advanced Validation</h3>
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<ul class="space-y-2 text-slate-600">
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<li><code class="text-sm bg-slate-100 p-1 rounded">@Min(n)</code>, <code class="text-sm bg-slate-100 p-1 rounded">@Max(n)</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@MinLength(n)</code>, <code class="text-sm bg-slate-100 p-1 rounded">@MaxLength(n)</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@Email()</code>, <code class="text-sm bg-slate-100 p-1 rounded">@IsUrl()</code></li>
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<li><code class="text-sm bg-slate-100 p-1 rounded">@ValidateNested()</code></li>
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</ul>
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</div>
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</div>
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</div>
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</section>
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</main>
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<footer class="bg-slate-50 border-t border-slate-200 py-12">
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<div class="max-w-7xl mx-auto px-4 text-center text-slate-500">
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<p>© 2026 Optimus Library. Licensed under MIT.</p>
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</div>
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</footer>
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<script>
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const initialCode = `// 1. Define your model with decorators
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class User {
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@IsString()
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@MinLength(3)
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name;
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@IsInt()
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@Min(18)
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age;
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@Email()
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email;
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constructor(name, age, email) {
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this.name = name;
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this.age = age;
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this.email = email;
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}
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}
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async function demo() {
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console.log("--- Validating valid user ---");
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const user = new User("Alice", 25, "alice@example.com");
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const json = await JsonMapper.toJson(user);
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console.log("JSON Output:", json);
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console.log("\\n--- Testing validation failure ---");
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try {
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const invalidJson = '{"name": "Bo", "age": 15, "email": "not-an-email"}';
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await JsonMapper.fromJson(User, invalidJson);
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} catch (error) {
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console.log("Caught Error:", error.message);
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console.log("Validation Errors:", JSON.stringify(error.errors, null, 2));
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}
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}
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demo();`;
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const editor = CodeMirror.fromTextArea(document.getElementById('editor'), {
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mode: 'javascript',
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theme: 'dracula',
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lineNumbers: true,
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indentUnit: 2,
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tabSize: 2,
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});
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editor.setValue(initialCode);
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const outputElement = document.getElementById('output');
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const runBtn = document.getElementById('run-btn');
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// Custom console.log to show output in the pre element
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const originalLog = console.log;
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function logToOutput(...args) {
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originalLog(...args);
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const message = args.map(arg =>
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typeof arg === 'object' ? JSON.stringify(arg, null, 2) : String(arg)
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).join(' ');
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outputElement.textContent += message + '\\n';
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}
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runBtn.addEventListener('click', async () => {
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outputElement.textContent = '';
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const code = editor.getValue();
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try {
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// Transpile TypeScript-like code to JS with decorators support
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const transpiled = Babel.transform(code, {
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presets: ['env', 'typescript'],
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plugins: [
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['proposal-decorators', { legacy: true }],
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['proposal-class-properties', { loose: true }]
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]
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}).code;
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// Create a function with the library symbols in scope
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const {
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IsString, IsInt, Min, Max, IsEmail, IsArray, IsDate, IsOptional, ValidateNested,
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IsBoolean, IsNumber, IsObject, IsDefined, IsNotEmpty, MinLength, MaxLength,
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Email, IsUrl, Matches, ArrayMinSize, ArrayMaxSize, ArrayNotEmpty, IsIn, IsNotIn,
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Positive, Negative,
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JsonSerialize, JsonDeserialize, JsonPolymorphic, JsonType, JsonMapper,
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JsonValidationError
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} = Optimus;
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const run = new Function(
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'console',
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'IsString', 'IsInt', 'Min', 'Max', 'IsEmail', 'IsArray', 'IsDate', 'IsOptional', 'ValidateNested',
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'IsBoolean', 'IsNumber', 'IsObject', 'IsDefined', 'IsNotEmpty', 'MinLength', 'MaxLength',
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'Email', 'IsUrl', 'Matches', 'ArrayMinSize', 'ArrayMaxSize', 'ArrayNotEmpty', 'IsIn', 'IsNotIn',
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'Positive', 'Negative',
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'JsonSerialize', 'JsonDeserialize', 'JsonPolymorphic', 'JsonType', 'JsonMapper',
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'JsonValidationError',
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transpiled
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);
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await run(
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{ log: logToOutput },
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IsString, IsInt, Min, Max, IsEmail, IsArray, IsDate, IsOptional, ValidateNested,
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IsBoolean, IsNumber, IsObject, IsDefined, IsNotEmpty, MinLength, MaxLength,
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Email, IsUrl, Matches, ArrayMinSize, ArrayMaxSize, ArrayNotEmpty, IsIn, IsNotIn,
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Positive, Negative,
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JsonSerialize, JsonDeserialize, JsonPolymorphic, JsonType, JsonMapper,
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JsonValidationError
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);
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} catch (err) {
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outputElement.textContent += 'Error: ' + err.message + '\\n';
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if (err.stack) {
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// originalLog(err.stack);
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}
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}
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});
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</script>
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</body>
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</html>
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