結論

nodeのバージョンを10.2.1にダウングレードした。

node、npmのversion

$ node -v
v10.6.0
$ npm -v
5.6.0

問題

npm istall を実行したところ下記のようなエラーが出た。

$ npm install
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! asyncWrite is not a function
npm ERR! pna.nextTick is not a function

対応

ここに書いていることを読んで対応。

$ n 10.2.1