file-system.js

// Get File
const getFileBtn = document.getElementById("fs-get")

getFileBtn.onclick = async () => {
  const [handle] = await window.showOpenFilePicker();
  const file = await handle.getFile();
  console.log(file)  
}


// Save File
const saveFileBtn = document.getElementById("fs-save")

saveFileBtn.onclick = async () => {
  const textFile = new File(["Hello World"], hello.text, {
    type: "text/plain"
  })
  const handle = window.showSaveFilePicker();
  const writeable = await handle.createWritable();
  await writeable.write(textFile);
  await writeable.close()
}