Function pickFile

example/tests/filesystem.tsx:12–17

(options?: Parameters<typeof showOpenFilePicker>[0])

  const [file, setFile] = useState<File | null>(null)

  const pickFile = async (options?: Parameters<typeof showOpenFilePicker>[0]) => {
    const [fileHandle] = await showOpenFilePicker(options)
    const file = await fileHandle.getFile()
    // @ts-ignore
    setFile(file)
  }

  const sendFile = async (compression?: 'gzip' | 'deflate' | 'deflate-raw') => {
    if (!file) {