jsPDF Server Side html() function generates empty pdf

I have a scenario, where I need to create a pdf file from html source code on server side. I tried the solution from issue #2248 , and the doc.text() function worked, but the doc.html() function creates an empty pdf and I got the following error message:

html2canvas not loaded.
jspdf.node.min.js:150

(node:7560) UnhandledPromiseRejectionWarning: ReferenceError: document is not defined
warning.js:27
    at r (\node_modules\jspdf\dist\jspdf.node.min.js:150:335)
    at Promise.<anonymous> (\dist\node_modules\jspdf\dist\jspdf.node.min.js:150:1413)
    at processTicksAndRejections (internal/process/task_queues.js:94:5)
(node:7560) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)

I found this solution, that solved the “html2canvas not loaded” error, but I still get an empty pdf and an UnhandledPromiseRejectionWarning:

(node:7136) UnhandledPromiseRejectionWarning: ReferenceError: document is not defined
warning.js:27
    at r (\node_modules\jspdf\dist\jspdf.node.min.js:150:335)
    at Promise.<anonymous> (\node_modules\jspdf\dist\jspdf.node.min.js:150:1413)
    at processTicksAndRejections (internal/process/task_queues.js:94:5)
(node:7136) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
warning.js:27
(node:7136) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

This is the code that I tried to run:

global.window = {document: {createElementNS: () => {return {}} }};
global.navigator = {};
global.btoa = () => {};

const fs = require('fs')
const html2canvas = require('html2canvas');
window.html2canvas = html2canvas;
const jsPDF = require('jspdf/dist/jspdf.node.min')

// Default export is a4 paper, portrait, using milimeters for units
var doc = new jsPDF()
doc.html('<p>Hello world!</p>');

fs.writeFileSync('./output.pdf', doc.output())

delete global.window;
delete global.navigator;
delete global.btoa;

Is there any way to solve this issue?

[manuelamaria]

Thanks for the answer!

Unfortunately I get more errors from jsdom: Error: Not implemented: window.computedStyle(elt, pseudoElt), Error: Not implemented: window.scrollTo

This is my code:

const jsdom = require("jsdom");
const { JSDOM } = jsdom;
const { jsPDF } = require("jspdf");

var myhtml = `<div><p>test me</p></div>`;
const htmldom = new JSDOM(myhtml);

global.window = htmldom.window;
global.document = window.document;
global.Node = window.Node;

var doc = new jsPDF('p', 'mm', 'a4');
doc.html(document.body, {
    callback: function(d) {
        d.save();
    }
});
doc.save("a4.pdf");

[muskan3006]

I am still facing this issue, do we have a solution now?