doc.autotable.previous is undefined in jsPDF - jspdf

Question

I' m using jspdf with vue. I want the text to come under that table after adding a table, but I get the error doc.autotable.previous is undefined.
exportPdf(){
var doc = new jsPDF('l', 'pt');
doc.setFontSize(20);
doc.text(170, 20, 'Ürün Teslim Belgesi',{
halign: 'center',
valign: 'middle'
});
var vm = this;
var columns = [
{title: "Ürün", dataKey: 'product'},
{title: 'Tip', dataKey: 'type'},
{title: 'Adet', dataKey: 'piece'},
{title: 'Tarih', dataKey: 'date'}
];
doc.autoTable(
columns, vm.products,{
margin: {left: 35},
headStyles: {halign: 'center', valign: 'middle'},
theme: 'grid',
tableWidth: 'auto',
fontSize: 8,
overflow: 'linebreak',
});
doc.setProperties({
title: 'xxx',
subject: 'yyy',
author: 'ttt',
keywords: 'qqq',
creator: 'www'
});
doc.text("example text example text example text example text.", 14, doc.autoTable.previous.finalY + 10);
doc.save('test.pdf');
},
Thank you very much if you can help, have a nice day.

Answer 1

Seems strange to me - tried your code and I got settings.styles is undefined error instead the one you describing. It seems you mixing options from Styling options and Other options
Following code works just fine (had to replace data - jspdf 1.5.3, jspdf-autotable 3.2.11):
var doc = new jsPDF("l", "pt");
doc.setFontSize(20);
doc.text(170, 20, "Ürün Teslim Belgesi", {
halign: "center",
valign: "middle"
});
var products = [
{ product: "Retro", type: "Shoes", piece: 1, date: "1.1.2020" }
];
var columns = [
{ title: "Ürün", dataKey: "product" },
{ title: "Tip", dataKey: "type" },
{ title: "Adet", dataKey: "piece" },
{ title: "Tarih", dataKey: "date" }
];
doc.autoTable(columns, products, {
theme: "grid",
styles: {
fontSize: 8,
overflow: "linebreak"
},
headStyles: { halign: "center", valign: "middle" },
tableWidth: "auto",
margin: { left: 35 }
});
doc.setProperties({
title: "xxx",
subject: "yyy",
author: "ttt",
keywords: "qqq",
creator: "www"
});
doc.text(
"example text example text example text example text.",
14,
doc.autoTable.previous.finalY + 10
);
doc.save("test.pdf");