Get all files in directory and subdirectories recursively

recursiveRead.js

function recursiveRead(dir) {
  return fs.readdirSync(dir).flatMap((file) => {
    const absoluteDir = path.join(dir, file);
    if (fs.statSync(absoluteDir).isDirectory())
      return recursiveRead(absoluteDir);
    else return absoluteDir;
  });
}