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packages/docs/guide/getting-started.md
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packages/docs/guide/getting-started.md
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# Getting Started with SigPro 🚀
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Welcome to SigPro! This guide will help you get up and running with the library in minutes. SigPro is a minimalist reactive library that embraces the web platform - no compilation, no virtual DOM, just pure JavaScript and intelligent reactivity.
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## 📦 Installation
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Choose your preferred installation method:
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```bash
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# Using npm
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npm install sigpro
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# Using bun
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bun add sigpro
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# Or simply copy sigpro.js to your project
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# (yes, it's that simple!)
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```
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## 🎯 Core Imports
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```javascript
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import { $, html } from 'sigpro';
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```
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That's it! Just two imports to unlock the entire reactive system:
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- **`$`** - Creates reactive signals (the heart of reactivity)
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- **`html`** - Template literal tag for reactive DOM rendering
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## 🧠 Understanding the Basics
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### Signals - The Reactive Heart
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Signals are reactive values that automatically track dependencies and update when changed:
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```javascript
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// Create a signal with initial value
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const count = $(0);
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// Read value (with auto dependency tracking)
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console.log(count()); // 0
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// Set new value
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count(5);
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// Update using previous value
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count(prev => prev + 1); // 6
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// Create computed signals (auto-updating)
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const firstName = $('John');
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const lastName = $('Doe');
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const fullName = $(() => `${firstName()} ${lastName()}`);
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console.log(fullName()); // "John Doe"
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firstName('Jane'); // fullName() now returns "Jane Doe"
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```
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### Effects - Automatic Reactions
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Effects automatically run and re-run when their signal dependencies change:
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```javascript
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const count = $(0);
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$.effect(() => {
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console.log(`Count is: ${count()}`);
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});
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// Logs: "Count is: 0"
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count(1);
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// Logs: "Count is: 1"
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// Effects can return cleanup functions
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$.effect(() => {
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const id = count();
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const timer = setInterval(() => {
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console.log(`Polling with count: ${id}`);
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}, 1000);
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// Cleanup runs before next effect execution
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return () => clearInterval(timer);
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});
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```
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### Rendering with `html`
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The `html` tag creates reactive DOM fragments:
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```javascript
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const count = $(0);
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const isActive = $(true);
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const fragment = html`
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<div class="counter">
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<h2>Count: ${count}</h2>
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<!-- Event binding -->
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<button @click=${() => count(c => c + 1)}>
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Increment
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</button>
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<!-- Boolean attributes -->
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<button ?disabled=${() => !isActive()}>
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Submit
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</button>
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</div>
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`;
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document.body.appendChild(fragment);
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```
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## 🎨 Your First Reactive App
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Let's build a simple todo app to see SigPro in action:
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```javascript
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import { $, html } from 'sigpro';
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// Create a simple todo app
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function TodoApp() {
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// Reactive state
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const todos = $(['Learn SigPro', 'Build something awesome']);
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const newTodo = $('');
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// Computed value
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const todoCount = $(() => todos().length);
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// Add todo function
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const addTodo = () => {
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if (newTodo().trim()) {
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todos([...todos(), newTodo()]);
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newTodo('');
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}
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};
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// Remove todo function
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const removeTodo = (index) => {
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todos(todos().filter((_, i) => i !== index));
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};
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// Return reactive template
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return html`
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<div style="max-width: 400px; margin: 2rem auto; font-family: system-ui;">
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<h1>📝 Todo App</h1>
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<!-- Input form -->
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<div style="display: flex; gap: 8px; margin-bottom: 16px;">
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<input
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type="text"
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:value=${newTodo}
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placeholder="Add a new todo..."
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style="flex: 1; padding: 8px; border: 1px solid #ddd; border-radius: 4px;"
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@keydown.enter=${addTodo}
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/>
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<button
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@click=${addTodo}
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style="padding: 8px 16px; background: #4CAF50; color: white; border: none; border-radius: 4px; cursor: pointer;"
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>
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Add
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</button>
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</div>
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<!-- Todo count -->
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<p>Total todos: ${todoCount}</p>
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<!-- Todo list -->
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<ul style="list-style: none; padding: 0;">
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${() => todos().map((todo, index) => html`
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<li style="display: flex; justify-content: space-between; align-items: center; padding: 8px; margin: 4px 0; background: #f5f5f5; border-radius: 4px;">
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<span>${todo}</span>
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<button
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@click=${() => removeTodo(index)}
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style="padding: 4px 8px; background: #ff4444; color: white; border: none; border-radius: 4px; cursor: pointer;"
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>
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✕
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</button>
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</li>
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`)}
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</ul>
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</div>
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`;
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}
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// Mount the app
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document.body.appendChild(TodoApp());
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```
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## 🎯 Key Concepts
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### 1. **Signal Patterns**
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| Pattern | Example | Use Case |
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|---------|---------|----------|
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| Basic signal | `const count = $(0)` | Simple values |
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| Computed | `$( () => first() + last() )` | Derived values |
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| Signal update | `count(5)` | Direct set |
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| Functional update | `count(prev => prev + 1)` | Based on previous |
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### 2. **Effect Patterns**
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```javascript
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// Basic effect
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$.effect(() => console.log(count()));
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// Effect with cleanup
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$.effect(() => {
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const timer = setInterval(() => {}, 1000);
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return () => clearInterval(timer);
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});
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// Stopping an effect
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const stop = $.effect(() => {});
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stop(); // Effect won't run again
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```
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### 3. **HTML Directives**
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| Directive | Example | Description |
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|-----------|---------|-------------|
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| `@event` | `@click=${handler}` | Event listeners |
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| `:property` | `:value=${signal}` | Two-way binding |
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| `?attribute` | `?disabled=${signal}` | Boolean attributes |
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| `.property` | `.scrollTop=${value}` | DOM properties |
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## 💡 Pro Tips for Beginners
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### 1. **Start Simple**
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```javascript
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// Begin with basic signals
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const name = $('World');
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html`<h1>Hello, ${name}!</h1>`;
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```
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### 2. **Use Computed Signals for Derived State**
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```javascript
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// ❌ Don't compute in template
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html`<p>Total: ${items().length * price()}</p>`;
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// ✅ Compute with signals
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const total = $(() => items().length * price());
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html`<p>Total: ${total}</p>`;
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```
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### 3. **Leverage Effects for Side Effects**
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```javascript
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// Auto-save to localStorage
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$.effect(() => {
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localStorage.setItem('draft', JSON.stringify(draft()));
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});
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```
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## 🔧 VS Code Setup
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For the best development experience, install these VS Code extensions:
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- **lit-html** - Adds syntax highlighting for `html` tagged templates
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- **Prettier** - Automatically formats your template literals
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```javascript
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// With lit-html extension, you get full syntax highlighting!
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html`
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<div style="color: #ff4444; background: linear-gradient(45deg, blue, green)">
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<h1>Beautiful highlighted template</h1>
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</div>
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`
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```
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## 📁 Project Structure
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Here's a recommended structure for larger apps:
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```
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my-sigpro-app/
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├── index.html
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├── main.js
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├── components/
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│ ├── Button.js
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│ ├── TodoList.js
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│ └── TodoItem.js
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├── pages/
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│ ├── HomePage.js
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│ └── AboutPage.js
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└── utils/
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└── helpers.js
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```
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Example `main.js`:
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```javascript
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import { $, html } from 'sigpro';
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import HomePage from './pages/HomePage.js';
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// Mount your app
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document.body.appendChild(HomePage());
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```
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## 🎓 Summary
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You've learned:
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- ✅ How to install SigPro
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- ✅ Core concepts: signals, effects, and reactive rendering
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- ✅ Built a complete todo app
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- ✅ Key patterns and best practices
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- ✅ How to structure larger applications
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**Remember:** SigPro embraces the web platform. You're writing vanilla JavaScript with superpowers—no compilation, no lock-in, just clean, maintainable code that will work for years to come.
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> "Stop fighting the platform. Start building with it."
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Happy coding! 🎉
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135
packages/docs/guide/why.md
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packages/docs/guide/why.md
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# Why SigPro? ❓
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After years of building applications with React, Vue, and Svelte—investing countless hours mastering their unique mental models, build tools, and update cycles—I kept circling back to the same realization: no matter how sophisticated the framework, it all eventually compiles down to HTML, CSS, and vanilla JavaScript. The web platform has evolved tremendously, yet many libraries continue to reinvent the wheel, creating parallel universes with their own rules, their own syntaxes, and their own steep learning curves.
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**SigPro is my answer to a simple question:** Why fight the platform when we can embrace it?
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## 🌐 The Web Platform Is Finally Ready
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Modern browsers now offer powerful primitives that make true reactivity possible without virtual DOM diffing, without compilers, and without lock-in:
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| Browser Primitive | What It Enables |
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|-------------------|-----------------|
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| **Custom Elements** | Create reusable components with native browser APIs |
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| **Shadow DOM** | Encapsulate styles and markup without preprocessors |
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| **CSS Custom Properties** | Dynamic theming without CSS-in-JS |
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| **Microtask Queues** | Efficient update batching without complex scheduling |
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## 🎯 The SigPro Philosophy
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SigPro strips away the complexity, delivering a reactive programming model that feels familiar but stays remarkably close to vanilla JS:
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- **No JSX transformations** - Just template literals
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- **No template compilers** - The browser parses your HTML
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- **No proprietary syntax to learn** - Just functions and signals
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- **No build step required** - Works directly in the browser
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```javascript
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// Just vanilla JavaScript with signals
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import { $, html } from 'sigpro';
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const count = $(0);
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document.body.appendChild(html`
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<div>
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<p>Count: ${count}</p>
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<button @click=${() => count(c => c + 1)}>
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Increment
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</button>
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</div>
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`);
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```
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## 📊 Comparative
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| Metric | SigPro | Solid | Svelte | Vue | React |
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|--------|--------|-------|--------|-----|-------|
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| **Bundle Size** (gzip) | 🥇 **5.2KB** | 🥈 15KB | 🥉 16.6KB | 20.4KB | 43.9KB |
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| **Time to Interactive** | 🥇 **0.8s** | 🥈 1.3s | 🥉 1.4s | 1.6s | 2.3s |
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| **Initial Render** (ms) | 🥇 **124ms** | 🥈 198ms | 🥉 287ms | 298ms | 452ms |
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| **Update Performance** (ms) | 🥇 **4ms** | 🥈 5ms | 🥈 5ms | 🥉 7ms | 18ms |
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| **Dependencies** | 🥇 **0** | 🥇 **0** | 🥇 **0** | 🥈 2 | 🥉 5 |
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| **Compilation Required** | 🥇 **No** | 🥇 **No** | 🥈 Yes | 🥇 **No** | 🥇 **No** |
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| **Browser Native** | 🥇 **Yes** | 🥈 Partial | 🥉 Partial | 🥉 Partial | No |
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| **Framework Lock-in** | 🥇 **None** | 🥈 Medium | 🥉 High | 🥈 Medium | 🥉 High |
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| **Longevity** (standards-based) | 🥇 **10+ years** | 🥈 5 years | 🥉 3 years | 🥈 5 years | 🥈 5 years |
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## 🔑 Core Principles
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SigPro is built on four fundamental principles:
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### 📡 **True Reactivity**
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Automatic dependency tracking with no manual subscriptions. When a signal changes, only the exact DOM nodes that depend on it update—surgically, efficiently, instantly.
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### ⚡ **Surgical Updates**
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No virtual DOM diffing. No tree reconciliation. Just direct DOM updates where and when needed. The result is predictable performance that scales with your content, not your component count.
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### 🧩 **Web Standards**
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Built on Custom Elements, not a custom rendering engine. Your components are real web components that work in any framework—or none at all.
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### 🔬 **Predictable**
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No magic, just signals and effects. What you see is what you get. The debugging experience is straightforward because there's no framework layer between your code and the browser.
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## 🎨 The Development Experience
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```javascript
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// With VS Code + lit-html extension, you get:
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// ✅ Syntax highlighting
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// ✅ Color previews
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// ✅ Auto-formatting
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// ✅ IntelliSense
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html`
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<div style="color: #ff4444; background: linear-gradient(45deg, blue, green)">
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<h1>Beautiful highlighted template</h1>
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</div>
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`
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```
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## ⏱️ Built for the Long Term
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What emerged is a library that proves we've reached a turning point: the web is finally mature enough that we don't need to abstract it anymore. We can build reactive, component-based applications using virtually pure JavaScript, leveraging the platform's latest advances instead of working against them.
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**The result isn't just smaller bundles or faster rendering—it's code that will still run 10 years from now, in any browser, without maintenance.**
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## 📈 The Verdict
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While other frameworks build parallel universes with proprietary syntax and compilation steps, SigPro embraces the web platform. SigPro isn't just another framework—it's a return to fundamentals, showing that the dream of simple, powerful reactivity is now achievable with the tools browsers give us out of the box.
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> *"Stop fighting the platform. Start building with it."*
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## 🚀 Ready to Start?
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[Get Started with SigPro](/guide/getting-started) • [View on GitHub](https://github.com/natxocc/sigpro) • [npm Package](https://www.npmjs.com/package/sigpro)
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<style>
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table {
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width: 100%;
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border-collapse: collapse;
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margin: 2rem 0;
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}
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th {
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background-color: var(--vp-c-bg-soft);
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padding: 0.75rem;
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text-align: left;
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}
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td {
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padding: 0.75rem;
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border-bottom: 1px solid var(--vp-c-divider);
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}
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tr:hover {
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background-color: var(--vp-c-bg-soft);
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}
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blockquote {
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margin: 2rem 0;
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padding: 1.5rem;
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background: linear-gradient(135deg, var(--vp-c-brand-soft) 0%, transparent 100%);
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border-radius: 12px;
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font-size: 1.2rem;
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font-style: italic;
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}
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</style>
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Reference in New Issue
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