exportVar

exportVar.js

function exportVar(varToExport, filename) {
    if (varToExport === undefined) { throw new Error('undefined var'); }
    if (!filename) {
        filename = 'exportedVar.json';
    }
    const fileBlob = new File([JSON.stringify(varToExport)], filename);
    const dowloader = document.createElement('a');
    dowloader.setAttribute('download', filename);
    const url = URL.createObjectURL(fileBlob);
    dowloader.setAttribute('href', url);
    document.body.appendChild(dowloader);
    dowloader.click();
    requestIdleCallback(() => {
       URL.revokeObjectURL(url);
       document.body.removeChild(dowloader);
    });
}