# [dphelper](https://npmjs.com/package/dphelper)
> **The supercharged toolkit for modern web development, AI engineering & DevTools.**
[](https://npmjs.org/package/dphelper)
[](https://packagephobia.now.sh/result?p=dphelper)
[](https://npmjs.org/package/dphelper)
---
## About
**dphelper** is a powerful, zero-dependency utility library that brings together **303 production-ready tools** for web developers, AI engineers, and DevTools creators.
Think of it as your **universal toolbox** - from DOM manipulation to cryptographic operations, from real-time WebSocket handling to AI-powered token optimization. No more juggling multiple packages. One import, infinite possibilities.
### Why dphelper?
- **⚡ Zero Dependencies** - Pure vanilla JavaScript/TypeScript. No bloat, no surprises.
- **🤖 AI-First Design** - Built for LLM apps with TOON optimization, token counting, and RAG support.
- **🌐 Universal** - Works in browser, Node.js, Bun, and Deno.
- **🔒 Type-Safe** - Full TypeScript definitions auto-generated for every tool.
- **📦 Tiny Bundle** - Only ~171KB minified, tree-shakeable.
- **🔐 Security First** - NIST/NSA compliant, CNSA algorithms, PBKDF2 310k iterations
> [!NOTE]
> **Network Access:** This library includes networking primitives (`fetch`, `sse`, `socket`) by design for modern web development. Callers are responsible for validating and sanitizing URLs before use. See the [Security](#security) section for best practices.
> *"dphelper is what you'd build if you combined lodash, socket.io, and an AI SDK - but lighter."*
---
## State and Store removed from dpHelper
> [!IMPORTANT]
> dpHelper do not integrate state management directly anymore
>
> Application state is currently handled through **Memorio** or **RGS**.
If you need to use state management please consider:
- Simple State and Store Manager [Memorio](http://www.npmjs.com/package/memorio)
- Enterprise Lever State Manager [Argis RGS](https://www.npmjs.com/package/@biglogic/rgs)
---
## 🚀 New Powerful Modules
`dphelper` has expanded with powerful new modules for modern web development:
### ✨ Highlights
- **💾 IndexedDB Module**: Full-featured wrapper for IndexedDB with query builder, transactions, and bulk operations.
- **⚙️ Web Worker Module**: Create and manage workers, worker pools for parallel processing, and SharedWorkers for cross-tab communication.
- **🌍 i18n Module**: Complete internationalization with translations, pluralization, date/number formatting, and relative time.
- **🖼️ Image Module**: Image processing including resize, crop, filters, rotation, flip, and compositing.
- **🗜️ Compression Module**: Gzip, deflate, LZW compression, plus base64, URL, and HTML encoding/decoding.
- **🔐 Biometric Module**: WebAuthn support for fingerprint, face recognition, and secure credential management.
---
## ⚙️ Web Worker Module
```javascript
// Create worker from file
const worker = dphelper.worker.create('worker.js', {
onmessage: (e) => console.log(e.data)
});
// Create inline worker
const inlineWorker = dphelper.worker.createInline(`
self.onmessage = e => postMessage(e.data * 2);
`);
// Worker pool for parallel processing
const pool = dphelper.worker.pool('worker.js', 4);
const results = await dphelper.worker.poolExec(pool, [1, 2, 3, 4]);
// SharedWorker for cross-tab communication
const shared = dphelper.worker.shared('worker.js', { name: 'my-shared' });
```
---
## 🌍 i18n Module
```javascript
// Set locale
dphelper.i18n.setLocale('it');
// Add translations
dphelper.i18n.addTranslations('it', {
hello: 'Ciao {name}!',
items: '{count, plural, one{# item} other{# items}}'
});
// Translate with interpolation
dphelper.i18n.t('hello', { name: 'World' }); // "Ciao World!"
// Pluralize
dphelper.i18n.pluralize(5, { one: 'item', other: 'items' }); // "items"
// Format number/currency
dphelper.i18n.number(1234.56, 'de-DE', { style: 'currency', currency: 'EUR' });
// Relative time
dphelper.i18n.relativeTime(Date.now() - 3600000); // "1 hour ago"
```
---
## 🖼️ Image Module
```javascript
// Load image
const img = await dphelper.image.load('photo.jpg');
// Resize
const resized = dphelper.image.resize(img, 100, 100);
// Crop
const cropped = dphelper.image.crop(img, { x: 0, y: 0, width: 50, height: 50 });
// Apply filters
const filtered = dphelper.image.filter(img, { brightness: 1.2, sepia: 0.5 });
// Rotate/Flip
const rotated = dphelper.image.rotate(img, 90);
const flipped = dphelper.image.flip(img, 'horizontal');
// Grayscale/Blur
const gray = dphelper.image.grayscale(img);
const blurred = dphelper.image.blur(img, 5);
```
---
## 🗜️ Compression Module
```javascript
// Gzip compression
const compressed = await dphelper.compress.gzip('Hello World');
const decompressed = await dphelper.compress.gunzip(compressed);
// Base64 encoding
const encoded = dphelper.compress.base64Encode('Hello');
const decoded = dphelper.compress.base64Decode(encoded);
// URL encoding
const urlEncoded = dphelper.compress.urlEncode('Hello World!');
const urlDecoded = dphelper.compress.urlDecode(urlEncoded);
// HTML encoding
const htmlEncoded = dphelper.compress.htmlEncode('
```
---
## AI Power User Guide
The new `dphelper.ai` module is designed for the modern AI stack (LLMs, RAG, Vector Search).
```javascript
// ⚡ TOON: The ultimate JSON alternative for prompts
const toonData = dphelper.ai.toon(myJsonObject);
// Efficient, compact, and deterministic.
// 📏 Context-Aware Token Counting
const tokens = dphelper.ai.tokenCount(myJsonObject);
// Automatically calculates tokens based on the optimal TOON representation.
// 🧩 Smart Chunker (RAG Ready)
const chunks = dphelper.ai.chunker(longText, { size: 1000, overlap: 200 });
// 🔍 Semantic Similarity
const score = dphelper.ai.similarity(embeddingA, embeddingB);
// 🧠 Reasoning Extractor (DeepSeek/O1 support)
const { reasoning, content } = dphelper.ai.extractReasoning(rawAiReply);
// 📸 The AI Black Box (Snapshot)
const appStateToon = dphelper.ai.snapshot();
// Generates a complete app "mental dump" (URL, gState, Logs) optimized for LLMs.
```
---
## Modular Architecture
Every tool in `dphelper` is now a self-contained module. Our new build system automatically:
1. Scans the `tools/` directory.
2. Generates dynamic imports for the core.
3. Synchronizes TypeScript interfaces in `dphelper.d.ts`.
This ensures that adding new tools is instantaneous and always documented with full Intellisense support.
---
## 🔄 UI Mirror & Auto-Recovery
`dphelper` makes your web app feel like a native desktop application with cross-tab intelligence.
```javascript
// ⚓ Auto-Recovery: Save scroll and input values across reloads/crashes
dphelper.UI.anchorContext();
// 💓 Pulse: Real-time event bus between all open tabs (No Backend needed!)
const bus = dphelper.sync.pulse('my-app', (msg) => {
console.debug('Received from another tab:', msg);
});
bus.emit({ action: 'theme-change', value: 'dark' });
// 🔒 Interlock: Monitor how many tabs of your app are active
dphelper.browser.interlock((count) => {
console.debug(`Active tabs: ${count}`);
});
// 🌊 SSE: Modern streaming (Support for POST & Headers)
const stream = dphelper.sse.open('/api/ai', {
method: 'POST',
headers: { 'Authorization': 'Bearer ...' },
body: JSON.stringify({ prompt: 'Hello AI' })
});
stream.on('message', (data) => console.debug('Chunk:', data));
stream.on('error', (err) => console.error('Stream failure:', err));
```
---
## Browser Extension (Chrome/Edge)
Manage your `dphelper` environment, monitor memory usage, and access documentation directly from your browser.
- [Download for Chrome](https://chrome.google.com/webstore/detail/dphelper-manager-dev-tool/oppppldaoknfddeikfloonnialijngbk)
- [Download for Edge](https://microsoftedge.microsoft.com/addons/detail/dphelper-manager-dev-to/kphabkbdpaljlfagldhojilhfammepnk)
---
---
## Environment Compatibility
`dphelper` tools are classified by their execution target to ensure stability across the stack.
| Icon | Type | Description |
| :--- | :--- | :--- |
| 🌐 | **Client** | Browser only (requires DOM, window, or navigator). |
| 🖥️ | **Server** | Node.js / Bun / Deno only (access to process, fs, etc). |
| 🧬 | **Isomorphic** | Universal. Works in both Browser and Server (AI, Logic, Math). |
### Core Module Status
- `dphelper.ai`: 🧬 Isomorphic
- `dphelper.fetch`: 🧬 Isomorphic (Supports Node 18+)
- `dphelper.sse`: 🌐 Client (Streaming fetch)
- `dphelper.socket`: 🌐 Client (WebSocket)
- `dphelper.sync`: 🌐 Client (BroadcastChannel)
- `dphelper.UI`: 🌐 Client (DOM based)
---
## Security
dphelper follows **NIST SP 800-53** and **NSA** security standards:
### Cryptography (CNSA Compliant)
- **AES-256-GCM** encryption
- **SHA-256** only (SHA-1 deprecated)
- **PBKDF2** with 310,000 iterations (OWASP 2023)
### Network Security
- HTTPS required for `fetch` and `SSE`
- TLS enforced for `socket` (wss:// only)
- URL validation built-in
> [!IMPORTANT]
> **For Library Users:** Network functions require **input validation** by the caller. Always sanitize URLs before passing to dphelper networking tools.
```javascript
// Correct
const safeUrl = dphelper.sanitize.url(userInput);
await dphelper.fetch.get(safeUrl);
// Never do this
await dphelper.fetch.get(userInput); // ❌ Unvalidated
```
### Compliance
- 100% NIST/NSA compliant
- No known vulnerabilities
- Automated security scanning in CI
---
## License
MIT License
## Credits
Copyrigth (c) [Dario Passariello](https://dario.passariello.ca/)