CocoRoboDesktop/js/excel.js

exceltoxlxstream = async function (file) {
    if (file) {
        const reader = new FileReader();
        reader.onload = async function (e) {
            const data = new Uint8Array(e.target.result);
            const workbook = XLSX.read(data, { type: 'array' });
            const fileStream = XLSX.write(workbook, { type: 'array', bookType: 'xlsx' });
            return fileStream;
        };
        reader.readAsArrayBuffer(file);
    }
}