import RandomAccess from "random-access-idb-mutable-file"

const main = async (filename, options) => {
  const randomAccessFile = await RandomAccess.mount()

  const file = randomAccessFile(filename, options)
  file.write(10, Buffer.from("hello"), error => {
    // write a buffer to offset 10
    file.read(10, 5, (error, buffer) => {
      console.log(buffer) // read 5 bytes from offset 10
      file.close(() => {
        console.log("file is closed")
      })
    })
  })
}