Function assertEncoding

lib/internal/fs/utils.js:161–166

(encoding)

}

function assertEncoding(encoding) {
  if (encoding && !Buffer.isEncoding(encoding)) {
    const reason = 'is invalid encoding';
    throw new ERR_INVALID_ARG_VALUE('encoding', encoding, reason);
  }
}

class Dirent {
  constructor(name, type, path) {