diff --git a/benchmark/es/foreach-bench.js b/benchmark/es/foreach-bench.js new file mode 100644 index 00000000000000..fea5318bc6669b --- /dev/null +++ b/benchmark/es/foreach-bench.js @@ -0,0 +1,82 @@ +'use strict'; + +const common = require('../common.js'); + +const bench = common.createBenchmark(main, { + method: ['for', 'for-of', 'for-in', 'forEach'], + count: [5, 10, 20, 100], + millions: [5] +}); + +function useFor(n, items, count) { + var i, j; + bench.start(); + for (i = 0; i < n; i++) { + for (j = 0; j < count; j++) { + /* eslint-disable no-unused-vars */ + var item = items[j]; + /* esline-enable no-unused-vars */ + } + } + bench.end(n / 1e6); +} + +function useForOf(n, items) { + var i, item; + bench.start(); + for (i = 0; i < n; i++) { + for (item of items) {} + } + bench.end(n / 1e6); +} + +function useForIn(n, items) { + var i, j, item; + bench.start(); + for (i = 0; i < n; i++) { + for (j in items) { + /* eslint-disable no-unused-vars */ + item = items[j]; + /* esline-enable no-unused-vars */ + } + } + bench.end(n / 1e6); +} + +function useForEach(n, items) { + var i; + bench.start(); + for (i = 0; i < n; i++) { + items.forEach((item) => {}); + } + bench.end(n / 1e6); +} + +function main(conf) { + const n = +conf.millions * 1e6; + const count = +conf.count; + + const items = new Array(count); + var i; + var fn; + for (i = 0; i < count; i++) + items[i] = i; + + switch (conf.method) { + case 'for': + fn = useFor; + break; + case 'for-of': + fn = useForOf; + break; + case 'for-in': + fn = useForIn; + break; + case 'forEach': + fn = useForEach; + break; + default: + throw new Error('Unexpected method'); + } + fn(n, items, count); +}