Add a free text annotation to a PDF in Node.js

To add a free text annotation to a PDF Document page.

async function main() {
    const doc = await PDFNet.PDFDoc.createFromURL(filename);
    const page = await doc.getPage(1);

    // Create a free text
    const txtannot = await PDFNet.FreeTextAnnot.create(doc, new PDFNet.Rect(100, 100, 350, 500));
    await txtannot.setContentRect(new PDFNet.Rect(200, 200, 350, 500));
    await txtannot.setContents('\n\nSome swift brown fox snatched a gray hare out of the air by freezing it with an angry glare.\n\nAha!\n\nAnd there was much rejoicing!');
    await txtannot.setCalloutLinePoints(new PDFNet.Point(200, 300), new PDFNet.Point(150, 290), new PDFNet.Point(110, 110));
    const solidLine = await PDFNet.AnnotBorderStyle.create(PDFNet.AnnotBorderStyle.Style.e_solid, 1, 10, 20);
    await txtannot.setBorderStyle(solidLine, true);
    await txtannot.setEndingStyle(PDFNet.LineAnnot.EndingStyle.e_ClosedArrow);
    const greenColorPt = await PDFNet.ColorPt.init(0, 1, 0, 0);
    await txtannot.setColorDefault(greenColorPt); // default value of last param is 0
    await txtannot.setQuaddingFormat(1);
    await page.annotPushBack(txtannot);
    await txtannot.refreshAppearance();
}
PDFNet.runWithCleanup(main);

Add or edit PDF annotations sample
Full code sample which shows how to add or edit PDF annotations (e.g. hyperlink, intra-document link, stamp, rubber stamp, file attachment, sound, text, free-text, line, circle, square, polygon, polyline, free text, squiggly, caret, and ink).