code: function isImportant(node) {
    return (
      node &&
      node.data &&
      node.data.partOfSpeech &&
      (node.data.partOfSpeech.indexOf('N') === 0 ||
        (node.data.partOfSpeech === 'JJ' &&
          isUpperCase(nlcstToString(node).charAt(0))))
    )
  }
docs: Check if `node` is important.