How to use custom font family in table cell?

[MichelaCucchiSpot]

Hi,
I'd like to create tables with bold or italic text only in some cells.
Is this possible?

This is my code. It seems that

font: {
family: 'OpenSans-Italic',
src: `${fontsPath}OpenSans-Italic.ttf`,
},

has no effect.

What am I doing wrong?

const doc = new PDFDocument({
        size: 'A4',
        bufferPages: true,
        margins: { top: margin, right: margin, bottom: margin, left: margin },
        layout: 'portrait',
      });
      doc.registerFont('OpenSans', `${fontsPath}OpenSans-Regular.ttf`);
      doc.registerFont('OpenSans-Bold', `${fontsPath}OpenSans-Bold.ttf`);
      doc.registerFont('OpenSans-Italic', `${fontsPath}OpenSans-Italic.ttf`);
      doc.registerFont('OpenSans-Medium', `${fontsPath}OpenSans-Medium.ttf`);
      doc.fontSize(8);


      doc.font('OpenSans-Bold').fontSize(12);
      doc.table({
        defaultStyle: {
          border: false,
        },
        columnStyles: ['*', 200],
        data: [
          [
            {
              align: { x: 'left', y: 'top' },
              text: `${marker('E-BIKE REPORT')} `,
            },
            {
              font: {
                family: 'OpenSans-Italic',
                src: `${fontsPath}OpenSans-Italic.ttf`,
              },
              align: { x: 'right', y: 'top' },
              text: moment().format('DD/MM/YYYY'),
            },
          ],
        ],
      });
      doc.moveDown(1.0);