Angular xlsx - multiple sheets creation within the same xl file

Question

i have a requirement of download the excel file with 3 sheets(instructions, fill data, dataoptions)

instruction sheet will have a header with bold text: "Instructions" ex: - 1.please fill the options carefully 2. Copy the select dropdown values from 'sheet-data options'....etc in first sheet.

data fill sheet will be for filling the values

data options sheet will be likely to hold dropdown options

ex: indian, british ...etc

in the ts, i added like this and from the below code, it generating the 2 sheets with instructions, data fill header.. but provide the styles like bold, cell width to some more how to handle with this ?

    arr: Array<any>;
    arr2: Array<any>;
    textData: any = 'this is text message.....';
  constructor() {
    this.arr = [
      { name: 'Moran', role: 'back' },
      { name: 'Alain', role: 'front' },
      { name: 'Tony', role: 'back' },
      { name: 'Mike', role: 'back' },
      { name: 'Abo', role: 'back' },
      { name: 'Toni', role: 'back' },
    ];
    this.arr2 = [
      { instructions: `1. Use the "Template" sheet to fill.` },
      { instructions: `2. Use the "Template" sheet to fill 2.` }
    ];
  }



 exportToExcel($event) {
    const fileName = 'test.xlsx';
    const wb: XLSX.WorkBook = XLSX.utils.book_new();
    var ws1 = XLSX.utils.json_to_sheet(this.arr2);
    XLSX.utils.book_append_sheet(wb, ws1, 'test1');

   const ws: XLSX.WorkSheet = XLSX.utils.json_to_sheet(this.arr);
   XLSX.utils.book_append_sheet(wb, ws, 'test');
   XLSX.writeFile(wb, fileName);

}