legacy-libs/@protobufjs/float/bench/suite.js

   1 "use strict";\r
   2 module.exports = newSuite;\r
   3 \r
   4 var benchmark = require("benchmark"),\r
   5     chalk     = require("chalk");\r
   6 \r
   7 var padSize = 27;\r
   8 \r
   9 function newSuite(name) {\r
  10     var benches = [];\r
  11     return new benchmark.Suite(name)\r
  12     .on("add", function(event) {\r
  13         benches.push(event.target);\r
  14     })\r
  15     .on("start", function() {\r
  16         process.stdout.write("benchmarking " + name + " performance ...\n\n");\r
  17     })\r
  18     .on("cycle", function(event) {\r
  19         process.stdout.write(String(event.target) + "\n");\r
  20     })\r
  21     .on("complete", function() {\r
  22         if (benches.length > 1) {\r
  23             var fastest = this.filter("fastest"), // eslint-disable-line no-invalid-this\r
  24                 fastestHz = getHz(fastest[0]);\r
  25             process.stdout.write("\n" + chalk.white(pad(fastest[0].name, padSize)) + " was " + chalk.green("fastest") + "\n");\r
  26             benches.forEach(function(bench) {\r
  27                 if (fastest.indexOf(bench) === 0)\r
  28                     return;\r
  29                 var hz = hz = getHz(bench);\r
  30                 var percent = (1 - hz / fastestHz) * 100;\r
  31                 process.stdout.write(chalk.white(pad(bench.name, padSize)) + " was " + chalk.red(percent.toFixed(1) + "% slower") + "\n");\r
  32             });\r
  33         }\r
  34         process.stdout.write("\n");\r
  35     });\r
  36 }\r
  37 \r
  38 function getHz(bench) {\r
  39     return 1 / (bench.stats.mean + bench.stats.moe);\r
  40 }\r
  41 \r
  42 function pad(str, len, l) {\r
  43     while (str.length < len)\r
  44         str = l ? str + " " : " " + str;\r
  45     return str;\r
  46 }\r