Yarn 速かった
Yarn とは
https://code.facebook.com/posts/1840075619545360
Facebook, Google, Tilde, Exponentの人たちが作ったnpmクライアント。
npm install の代わりに使える。
http://qiita.com/mizchi/items/1002fde0de10e7c54fb2
詳しくはこの辺
実行時間測ってみた
試しに業務レポジトリで npm install と yarn を比べてみた
- dependencies + devDependencies : 70 個
- npm-shrinkwrap.json : 22298 行
- 元の node_modules : 22 KB
npm install
303 sec
$ rm -rf node_modules $ npm cache clean $ time npm install (中略) npm install 268.92s user 71.13s system 93% cpu 6:02.97 total
キャッシュなしで yarn
103 sec
$ rm -rf ~/.yarn-cache $ rm -rf ~/.yarn $ rm -rf node_modules $ time yarn yarn install v0.15.1 error npm-shrinkwrap.json found. This will not be updated or respected. See [TODO] for more information. [1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages... warning benchmark@1.0.0: The engine "rhino" appears to be invalid. [3/4] 🔗 Linking dependencies... [4/4] 📃 Building fresh packages... success Saved lockfile. ✨ Done in 102.55s. yarn 56.30s user 27.98s system 81% cpu 1:42.99 total
キャッシュありで yarn
37 sec
$ rm -rf node_modules $ time yarn yarn install v0.15.1 error npm-shrinkwrap.json found. This will not be updated or respected. See [TODO] for more information. [1/4] 🔍 Resolving packages... [2/4] 🚚 Fetching packages... warning benchmark@1.0.0: The engine "rhino" appears to be invalid. [3/4] 🔗 Linking dependencies... [4/4] 📃 Building fresh packages... success Saved lockfile. ✨ Done in 36.91s. yarn 21.12s user 13.32s system 92% cpu 37.299 total
はえ〜
