Generate PDFs

You can generate PDFs using val functions by using an external library like jsPDF.

jsPDF usage exampleRun in Val Town ↗

export const helloWorldPDF = async (req: Request) => {
  const { jsPDF } = await import("npm:jspdf");
  const doc = new jsPDF();
  doc.text("Hello world!", 10, 10);
  return new Response(doc.output(), {
    headers: { "Content-Type": "application/pdf" },
  });
};

Here’s a more comprehensive example that builds an invoice.

Invoice generatorRun in Val Town ↗

import { generateInvoicePDF } from "https://esm.town/v/vtdocs/generateInvoicePDF?v=1";

export const examplePDF = async (req: Request) => {
  const invoicePDF = generateInvoicePDF({
    invoiceNumber: "001",
    date: new Date().toDateString(),
    customerName: "Alice Bar",
    customerEmail: "alice@bar.com",
    items: [{ description: "Arabica Beans 500g", quantity: 2, price: 10 }, {
      description: "Robusta Beans 500g",
      quantity: 1,
      price: 11,
    }],
    currencySymbol: "$",
  });
  return new Response(invoicePDF, {
    headers: { "Content-Type": "application/pdf" },
  });
};