bench: use benchmark instead of matcha

.eslintignore

@@ -1,5 +1,5 @@
 .nyc_output
 node_modules
 coverage
-benchmark/fixtures/libs/**
-benchmark/node_modules/**
+bench/fixtures/libs/**
+bench/node_modules/**

.gitignore

@@ -1,4 +1,4 @@
 .nyc_output
 node_modules
 coverage
-benchmark/fixtures/libs
+bench/fixtures/libs

.jscs.js

@@ -2,8 +2,8 @@ module.exports = {
     excludeFiles: [
         'node_modules/**',
         'coverage/**',
-        'benchmark/fixtures/libs/**',
-        'benchmark/node_modules/**'
+        'bench/fixtures/libs/**',
+        'bench/node_modules/**'
     ],
     requireSpaceAfterKeywords: ['if', 'else', 'for', 'while', 'do', 'switch', 'return', 'try', 'catch'],
     requireSpaceBeforeBlockStatements: true,

bench/enb.js

@@ -0,0 +1,13 @@
+'use strict';
+
+const vow = require('vow');
+const Level = require('enb/lib/levels/level');
+const LevelPlain = require('enb/lib/levels/level-plain');
+
+module.exports = function run(levels, scheme, done) {
+    var plain = scheme === 'flat' ? LevelPlain : null;
+
+    vow.all(levels.map(function (level) {
+        return (new Level(level, plain)).load();
+    })).then(done, done);
+}

bench/run.js

@@ -0,0 +1,47 @@
+'use strict';
+
+const Benchmark = require('Benchmark');
+const async = require('async');
+
+const fixtures = require('./fixtures');
+
+const walk = require('../lib');
+const enb = require('./enb');
+const scanl = require('./scan-level');
+
+const cases = [
+    { name: 'flat level',     levels: fixtures.levels.flat,    scheme: 'flat' },
+    { name: 'nested level',   levels: fixtures.levels.nested,  scheme: 'nested' },
+    { name: 'bem-bl',         levels: fixtures.libs['bem-bl'], scheme: 'nested' },
+    { name: 'bem-components', levels: fixtures.libs.o2,        scheme: 'nested' }
+];
+
+async.eachSeries(cases, function iteratee(item, callback) {
+    const suite = new Benchmark.Suite(item.name);
+
+    suite
+        .add('bem-walk', deferred => {
+            walk(item.levels, { defaults: { scheme: item.scheme } })
+                .resume().on('end', () => deferred.resolve());
+        }, { defer: true })
+        .add('     enb', deferred => {
+            enb(item.levels, item.scheme, () => deferred.resolve());
+        }, { defer: true })
+        .add('   scanl', deferred => {
+            scanl(item.levels, item.scheme, () => deferred.resolve());
+        }, { defer: true })
+        .on('start', () => {
+            console.log('         ' + item.name)
+        })
+        .on('cycle', event => {
+            const target = event.target;
+            const mean = target.stats.mean * 1000;
+
+            console.log(`${target} mean ${mean.toFixed(2)} ms`);
+        })
+        .on('complete', () => {
+            console.log('');
+            callback();
+        })
+        .run();
+});

benchmark/scan-level.js → bench/scan-level.js

@@ -1,27 +1,12 @@
-var scan = require('scan-level'),
-    fixtures = require('./fixtures');
+var scan = require('scan-level');
 
-suite('scan-level', function () {
-    set('mintime', 1000);
+module.exports = function run(levels, scheme, done) {
+    var opts = {};
 
-    bench('`flat` level', function (done) {
-        run(fixtures.levels.flat, { scanner: scanSimple }, done);
-    });
-
-    bench('`nested` level', function (done) {
-        run(fixtures.levels.nested, {}, done);
-    });
-
-    bench('`bem-bl`', function (done) {
-        run(fixtures.libs['bem-bl'], {},  done);
-    });
-
-    bench('`bem-core` + `bem-components`', function (done) {
-        run(fixtures.libs.o2, {}, done);
-    });
-});
+    if (scheme === 'flat') {
+        opts.scanner = scanSimple;
+    }
 
-function run(levels, opts, done) {
     var n = 0,
         l = levels.length;
 

package.json

@@ -25,11 +25,11 @@
   },
   "devDependencies": {
     "ava": "0.14.0",
+    "benchmark": "2.1.0",
     "coveralls": "2.11.9",
     "eslint": "2.7.0",
     "eslint-config-pedant": "0.2.0",
     "jscs": "2.11.0",
-    "matcha": "0.7.0",
     "mock-fs": "3.8.0",
     "nyc": "6.2.1",
     "promise.prototype.finally": "1.0.1",
@@ -39,8 +39,8 @@
     "pretest": "eslint . && jscs . -c .jscs.js",
     "test": "nyc ava",
     "unit-test": "ava",
-    "bench": "npm run bench-deps && matcha benchmark/*.js",
-    "bench-deps": "cd benchmark && npm i && cd fixtures && bower i",
+    "bench": "npm run bench-deps && node ./bench/run.js",
+    "bench-deps": "cd bench && npm i && cd fixtures && bower i",
     "coveralls": "nyc report --reporter=text-lcov | coveralls"
   },
   "ava": {