import {mkdtemp, realpath} from 'fs/promises';
import {tmpdir} from 'os';
import * as path from 'path';
import * as fs from 'fs';

export const withTempFile = <A>(fn: (filepath: string) => A) =>
  withTempDir(dir => fn(path.join(dir, 'file')));

export const withTempDir = async <A>(fn: (path: string) => A) => {
  const dir = await mkdtemp((await realpath(tmpdir())) + path.sep);
  try {
    return await fn(dir);
  } finally {
    fs.rmdir(dir, () => {});
  }
};