Yarn是Facebook最近推出的替代NPM的Node.js依赖管理，声称比NPM要更快和可靠的。有人对它们进行了基准性能测试：
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-------------------------- RESULTS (seconds) --------------------------
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| | angular2 | ember | react |
| npm_with_empty_cache | 15.687 | 56.993 | 93.650 |
| npm_with_all_cached | 9.380 | 52.380 | 81.213 |
| yarn_with_empty_cache | 9.477 | 30.757 | 37.497 |
| yarn_with_all_cached | 4.650 | 15.090 | 17.730 |
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经过各种集成环境Travis、Snap CI、 Semaphore、CircleCI，得出基本结论：
Yarn 比NPM快2到3倍
NPM vs Yarn benchmark - Berriart