A powerful TypeScript framework for dynamically generating professional business documents like invoices with web components and PDF export capabilities. 🧾

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Installation

pnpm install @design.estate/dees-document

Features

📄 PDF Generation - Server-side PDF creation from structured data using Puppeteer
🎨 Web Components - Lit-based custom elements for document rendering
🌍 Multi-language Support - Built-in translation system (EN, DE, ES)
📱 Automatic Pagination - Smart content overflow handling across pages
💳 QR Payment Codes - EPC QR codes for SEPA payments
🖨️ Print Mode - Optimized rendering for both screen and print
📐 A4 Format - Precise DIN A4 document dimensions
✨ Theming - Customizable colors, backgrounds, and branding

Usage

Server-Side PDF Generation

import { PdfService } from '@design.estate/dees-document';
import type { TInvoice } from '@tsclass/tsclass/finance';

// Initialize the PDF service
const pdfService = new PdfService({});
await pdfService.start();

// Create invoice data
const invoice: TInvoice = {
  type: 'invoice',
  invoiceType: 'debitnote',
  id: 'INV-2024-001',
  invoiceId: 'INV-2024-001',
  date: Date.now(),
  currency: 'EUR',
  dueInDays: 30,
  reverseCharge: false,
  from: {
    name: 'Your Company GmbH',
    type: 'company',
    status: 'active',
    address: {
      streetName: 'Business Street',
      houseNumber: '123',
      city: 'Berlin',
      country: 'Germany',
      postalCode: '10115',
    },
    sepaConnection: {
      bic: 'DEUTDEFF',
      iban: 'DE89370400440532013000',
    },
    registrationDetails: {
      vatId: 'DE123456789',
      registrationName: 'Amtsgericht Berlin',
      registrationId: 'HRB 12345',
    },
  },
  to: {
    name: 'Customer Inc.',
    type: 'company',
    status: 'active',
    address: {
      streetName: 'Client Avenue',
      houseNumber: '456',
      city: 'Munich',
      country: 'Germany',
      postalCode: '80331',
    },
    registrationDetails: {
      vatId: 'DE987654321',
    },
  },
  items: [
    {
      name: 'Web Development Services',
      unitQuantity: 40,
      unitNetPrice: 95,
      unitType: 'hours',
      vatPercentage: 19,
      position: 1,
    },
    {
      name: 'Hosting (Annual)',
      unitQuantity: 1,
      unitNetPrice: 299,
      unitType: 'item',
      vatPercentage: 19,
      position: 2,
    },
  ],
  subject: 'Invoice INV-2024-001',
  versionInfo: {
    type: 'final',
    version: '1.0.0',
  },
};

// Generate PDF
const pdfResult = await pdfService.createPdfFromLetterObject({
  letterData: invoice,
  documentSettings: {
    languageCode: 'EN',
    enableDefaultHeader: true,
    enableDefaultFooter: true,
    enableFoldMarks: true,
    dateStyle: 'long',
  },
});

// Save to file
import { SmartFs, SmartFsProviderNode } from '@push.rocks/smartfs';
const fs = new SmartFs(new SmartFsProviderNode());
await fs.file('./invoice.pdf').write(Buffer.from(pdfResult.buffer));

// Don't forget to stop the service when done
await pdfService.stop();

Document Settings

Customize document appearance with IDocumentSettings:

const documentSettings = {
  // Language for translations
  languageCode: 'DE', // 'EN' | 'DE' | 'ES'

  // Layout options
  enableDefaultHeader: true,
  enableDefaultFooter: true,
  enableFoldMarks: true,
  enableTopDraftText: true,
  enableInvoiceContractRefSection: true,

  // Display options
  vatGroupPositions: true,
  dateStyle: 'long', // 'short' | 'medium' | 'long' | 'full'

  // Theming
  theme: {
    colorPrimaryForeground: '#ffffff',
    colorPrimaryBackground: '#e4002b',
    colorAccentForeground: '#333333',
    colorAccentBackground: '#f5f5f5',
    pageBackground: 'url(your-watermark.png)',
    coverPageBackground: 'url(your-cover.png)',
  },
};

Web Component Usage

For browser-based document viewing:

import '@design.estate/dees-document/web';

// In your HTML/Lit template
html`
  <dedocument-viewer
    .letterData=${invoiceData}
    .documentSettings=${documentSettings}
  ></dedocument-viewer>
`;

// Or render the document directly
html`
  <dedocument-dedocument
    .letterData=${invoiceData}
    .documentSettings=${documentSettings}
  ></dedocument-dedocument>
`;

Translation System

The package includes a translation system for multi-language document generation:

import { translate } from '@design.estate/dees-document/shared';

// Translate document labels
translate('DE', 'invoice@@totalGross'); // "Gesamtbetrag (Brutto)"
translate('EN', 'invoice@@totalGross'); // "Total (Gross)"
translate('ES', 'invoice@@totalGross'); // "Total (Bruto)"

Module Exports

The package provides multiple entry points:

// Node.js server-side (PDF generation)
import { PdfService } from '@design.estate/dees-document';
import { PdfService } from '@design.estate/dees-document/node';

// Browser web components
import '@design.estate/dees-document/web';

// Shared utilities and types
import { translate, IDocumentSettings } from '@design.estate/dees-document/shared';

// TypeScript interfaces
import type { IDocumentSettings } from '@design.estate/dees-document/interfaces';

Document Components

The framework includes these web components:

Component	Description
`<dedocument-dedocument>`	Main document container with pagination
`<dedocument-viewer>`	Document viewer with controls
`<dedocument-page>`	Single A4 page with scaling support
`<dedocument-pageheader>`	Company logo and branding header
`<dedocument-letterheader>`	Sender/recipient addresses
`<dedocument-pagecontent>`	Main content area
`<dedocument-pagefooter>`	Company info and page numbers
`<dedocument-contentinvoice>`	Invoice-specific content layout
`<dedocument-paymentcode>`	EPC QR code for SEPA payments

Draft vs Final Documents

Control document version display:

const invoice = {
  // ... other fields
  versionInfo: {
    type: 'draft', // Shows watermark "DRAFT" across pages
    version: '0.1.0',
  },
};

// For final documents
const invoice = {
  // ... other fields
  versionInfo: {
    type: 'final', // Clean document without watermark
    version: '1.0.0',
  },
};

License and Legal Information

This repository contains open-source code licensed under the MIT License. A copy of the license can be found in the LICENSE file.

Please note: The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.

Trademarks

This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH or third parties, and are not included within the scope of the MIT license granted herein.

Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines or the guidelines of the respective third-party owners, and any usage must be approved in writing. Third-party trademarks used herein are the property of their respective owners and used only in a descriptive manner, e.g. for an implementation of an API or similar.

readme.md

@design.estate/dees-document