JavaScriptCore Loves ES6
This post describes the development of our first ES6 benchmark, which we call ARES-6. We used ARES–6 to drive significant optimization efforts in JSC, and this post describes three of them: high throughput generators, a new Map/Set implementation, and phantom spread. The post concludes with an analysis of performance data to show how JSC’s performance compares to other ES6 implementations.
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The figure above shows the overall ARES-6 scores in three different browsers: Safari 11 (13604.1.21.0.1), Firefox 53.0.3, and Chrome 58.0.3029.110. Our data shows that we’re nearly to 1.8x faster than Chrome, and close to 5x faster than Firefox.
