I am a bit confused. I am trying to create a new dat with via the promise syntax and it is creating a directory uls_scratch within my current working directory, but apparently not creating a folder for storing the dat data.

const { DatArchive, destroy } = require("dat-sdk/auto");

async function main() {
  const archive = await DatArchive.create({ title: "My Archive" });
  await archive.writeFile("/example.txt", "Hello World!");
  destroy();
}
main();

What is this directory and why is it not cleaned up? Where is the actually data getting stored?
Or does this use RAM?