const wb = new ExcelJS.Workbook();
const ws = wb.addWorksheet('XYZ');
ws.getCell('A1').value = { richText: [] };

// cell.text equal '',  now value is correct
expect(cell.text).to.equal('');
await wb.xlsx.writeFile('test.xlsx');

// persiste to file then create new Workbook and read saved file will reproduce this BUG
const wb2 = new ExcelJS.Workbook();
await wb2.xlsx.readFile('test.xlsx')
const cell2= wb.getWorksheet('XYZ').getCell('A1').

// cell.text now is {}, expect ''
expect(cell2.text).to.equal({});

expect(cell2.text).to.equal('');