code: function isPackageMeta(file) {
    if (file.match(/^readme(\.[^\.]*)$/i)) {
      return true;
    }
    if (file.match(/^(license|licence)(\.[^\.]*)?$/i)) {
      return true;
    }
    if (file.match(/^(notice)(\.[^\.]*)?$/i)) {
      return true;
    }
    if (file.match(/^(changes|changelog|history)(\.[^\.]*)?$/i)) {
      return true;
    }
  }
docs: /*
  Returns true if a given file cannot be npmignored and hence should be
  copied from the base directory and published to npm. Adapted from:
  https://github.com/npm/npm/blob/master/lib/utils/tar.js