Produce & Download a JSON object directly from the browser

file-download.js

const saveAsJsonLocally = (obj, filename) => {
  const data = JSON.stringify(obj, null, 2);
  const blob = new Blob([data], {type: 'text/plain'});

  const e = document.createEvent('MouseEvents');
  const a = document.createElement('a');

  a.download = filename;
  a.href = window.URL.createObjectURL(blob);
  a.dataset.downloadurl = ['text/json', a.download, a.href].join(':');
  e.initEvent('click', true, false);
  a.dispatchEvent(e);
}

out = {id: 'YOLO'};

saveAsJsonLocally(out, 'this-is-a-sample-file.json');