How to use 'jspdf fromhtml' in JavaScript

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async function createPDF(html) {
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    let browser: any = null;
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    try {
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        browser = await getPuppeteer();
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        const page = await browser.newPage();
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        await page.setContent(html);
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        return await page.pdf(pdfOptions);
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    } catch (error) {
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        throw error;
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    } finally {
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        if (browser) {
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            await browser.close();
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        }
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    }
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}

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function createPDF() {
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    var pdf = new jsPDF('p', 'pt', 'letter');
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    source = $j('#content')[0];
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        specialElementHandlers = {
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        '#bypassme': function (element, renderer) {
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            // true = "handled elsewhere, bypass text extraction"
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            return true;
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        }
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    };
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    margins = {
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        top: 80,
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        bottom: 60,
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        left: 40,
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        width: 522
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    };
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    pdf.fromHTML(
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    source, // HTML string or DOM elem ref.
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    margins.left, // x coord
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    margins.top, { // y coord
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        'width': margins.width, // max width of content on PDF
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        'elementHandlers': specialElementHandlers
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    },
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    function (dispose) {
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        pdf.save('Test.pdf');
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    }, margins);
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}