Saving a string as a file in browser console

saveFile.js

// Function:
async function saveFile(fh, content) {
  const stream = await fh.createWritable();
  await stream.write(content, {type: "text/plain"});
  await stream.close();
}

// Usage:
const content = 'Hello world';
const fh = await window.showSaveFilePicker();
await saveFile(fh, content);

See:

• https://stackoverflow.com/questions/11071473/how-can-javascript-save-to-a-local-file