Improve benchmark

benchmarks/report.js

@@ -2,9 +2,9 @@ export const reportResults = function(results) {
   results.forEach(reportResult)
 }
 
-const reportResult = function({ title, duration }) {
+const reportResult = function({ title, duration: { average } }) {
   // eslint-disable-next-line no-console, no-restricted-globals
-  console.log(`${title}: ${Math.round(duration * MICROSECS_TO_NANOSECS)}ns`)
+  console.log(`${title}: ${Math.round(average * MICROSECS_TO_NANOSECS)}ns`)
 }
 
 const MICROSECS_TO_NANOSECS = 1e3

benchmarks/results.js

@@ -1,6 +1,6 @@
 import { getArray } from './array.js'
 import { measure } from './measure.js'
-import { average } from './average.js'
+import { getStats } from './stats.js'
 
 export const getResults = function(tasks, { repeat }) {
   const loop = getArray(repeat)
@@ -25,6 +25,6 @@ const getArgResult = function({ title, main, args, variantTitle, loop }) {
 
   const mainA = args === undefined ? main : main.bind(null, ...args)
   const durations = loop.map(() => measure(mainA))
-  const duration = average(durations)
-  return { title: titleA, args, duration, durations, count: loop.length }
+  const duration = getStats(durations)
+  return { title: titleA, args, duration, count: loop.length }
 }

benchmarks/stats.js

@@ -0,0 +1,16 @@
+export const getStats = function(durations) {
+  const averageDuration = average(durations)
+  return { average: averageDuration, all: durations }
+}
+
+const average = function(array) {
+  return sum(array) / array.length
+}
+
+const sum = function(array) {
+  return array.reduce(add, 0)
+}
+
+const add = function(memo, number) {
+  return memo + number
+}