Nestjs Reportes Genera Pdfs Desde Node Full -mega- -
async generateWithTimeout(data: any, timeoutMs = 30000) return Promise.race([ this.generateReport(data), new Promise((_, reject) => setTimeout(() => reject(new Error('PDF generation timeout')), timeoutMs) ), ]);
// Option 3: Return base64 (for email attachments) @Post('base64') async getBase64(@Body() data: any) const pdfBuffer = await this.pdfService.generateReport('sales', data); return base64: pdfBuffer.toString('base64') ; NestJs Reportes Genera PDFs desde Node Full -Mega-
<!DOCTYPE html> <html> <head> <style> body font-family: 'Helvetica', sans-serif; .header background: #2c3e50; color: white; padding: 20px; .invoice-title font-size: 28px; table width: 100%; border-collapse: collapse; margin: 20px 0; th, td border: 1px solid #ddd; padding: 10px; text-align: left; th background: #f2f2f2; .total font-size: 20px; font-weight: bold; text-align: right; </style> </head> <body> <div class="header"> <div class="invoice-title">INVOICE #invoiceNumber</div> <div>Date: date</div> </div> <h3>Bill To:</h3> <p>customer.name<br>customer.address</p> async generateWithTimeout(data: any
npm install @nestjs/core @nestjs/common puppeteer handlebars @types/puppeteer Create a dedicated module: reject(new Error('PDF generation timeout'))
res.set( 'Content-Type': 'application/pdf', 'Content-Disposition': `attachment; filename=invoice-$data.invoiceNumber.pdf`, 'Content-Length': pdfBuffer.length, ); res.send(pdfBuffer);
| Library | Use Case | Install | |---------|----------|---------| | puppeteer | Complex HTML/CSS/JS rendering (Chrome) | npm install puppeteer | | @react-pdf/renderer | React-style declarative PDFs | npm install @react-pdf/renderer | | pdfmake | Simple tables & text | npm install pdfmake | | wkhtmltopdf | Legacy HTML→PDF | (Requires OS binary) |
static async acquire(): Promise<Browser> if (this.instances.length < this.max) const browser = await puppeteer.launch( headless: true ); this.instances.push(browser);