Add node perf tester based on Chrome Devtools protocol

.gitignore

@@ -1 +1,2 @@
 bower_components
+node_modules

node-perf-tester.js

@@ -0,0 +1,93 @@
+const path = require('path');
+
+const CDP = require('chrome-remote-interface');
+
+const argv = require('minimist')(process.argv.slice(2));
+
+const NUMBER_OF_RUNS = argv.runs || 100;
+
+(async function() {
+    let port = argv.port;
+    let chrome;
+
+    if (!argv.port) {
+        const chromeLauncher = require('chrome-launcher');
+        chrome = await chromeLauncher.launch({
+            chromeFlags: ['--headless', '--disable-gpu', '--remote-debugging-address=0.0.0.0'],
+            port: 0
+        });
+        port = chrome.port;
+    }
+
+    const tab = await CDP.New({port});
+    const client = await CDP({tab, port});
+
+    const {Page, Network, Runtime} = client;
+
+    const ONE_MB = 1024 * 1024 / 8;
+    const throttling = {
+        FAST_3G: {
+            downloadThroughput: 1.6 * ONE_MB * .9,
+            uploadThroughput: .75 * ONE_MB * .9
+        },
+        SLOW_3G: {
+            downloadThroughput: .5 * ONE_MB * .8,
+            uploadThroughput: .5 * ONE_MB * .8
+        }
+    }
+
+    await Promise.all([
+        Page.enable(),
+        Network.enable(),
+        port && argv.throttling && Network.emulateNetworkConditions(
+            Object.assign({}, throttling[argv.throttling], {
+                offline: false,
+                latency: 10
+            })
+        ),
+        Network.clearBrowserCache(),
+        Network.setCacheDisabled({cacheDisabled: true}),
+        Network.setBypassServiceWorker({bypass: true}),
+    ]);
+
+    let loadEventPromise;
+
+    Page.loadEventFired(() => {
+        loadEventPromise();
+    });
+
+    const options = require(path.join(process.cwd(), argv.targets));
+
+    const perfTimings = {};
+    for (const [type] of options) {
+        perfTimings[type] = [];
+    }
+
+    process.on('exit', async() => {
+        for (const [type, timings] of Object.entries(perfTimings)) {
+            const average = timings.reduce((a, b) => a + b) / timings.length;
+            console.log(`Average gain for ${type} in ${timings.length} runs is ${average}`);
+        }
+
+        await CDP.Close({port, id: tab.id});
+        await client.close();
+        if (!argv.port) {
+            await chrome.kill();
+        }
+    });
+
+    for (let i = 0; i < NUMBER_OF_RUNS; i++) {
+        for (const [type, url] of options) {
+            requestType = type;
+
+            Page.navigate({url});
+
+            await new Promise(resolve => {
+                loadEventPromise = resolve;
+            });
+            const {result: {value: perfTiming}} = await Runtime.evaluate({expression: 'window.perfTiming'});
+            perfTimings[type].push(perfTiming);
+        }
+        process.stdout.write(`${i + 1}/${NUMBER_OF_RUNS}\r`);
+    }
+})()

options.json

@@ -0,0 +1,4 @@
+[
+    ["original", "http://localhost:8081/youtube/"],
+    ["effects", "http://localhost:8081/youtube/index-effects.html"]
+]

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "perf-tester",
+  "version": "0.0.1",
+  "main": "node-perf-tester.js",
+  "license": "BSD-3-Clause",
+  "dependencies": {
+    "chrome-launcher": "^0.4.0",
+    "chrome-remote-interface": "^0.24.3",
+    "minimist": "^1.2.0"
+  }
+}

yarn.lock

@@ -0,0 +1,144 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@types/core-js@^0.9.41":
+  version "0.9.42"
+  resolved "https://registry.yarnpkg.com/@types/core-js/-/core-js-0.9.42.tgz#dd6da92cd7d5ab5ca0b4477524537c3e633b6bce"
+
+"@types/mkdirp@^0.3.29":
+  version "0.3.29"
+  resolved "https://registry.yarnpkg.com/@types/mkdirp/-/mkdirp-0.3.29.tgz#7f2ad7ec55f914482fc9b1ec4bb1ae6028d46066"
+
+"@types/[email protected]":
+  version "6.0.66"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-6.0.66.tgz#5680b74a6135d33d4c00447e7c3dc691a4601625"
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+
+brace-expansion@^1.1.7:
+  version "1.1.8"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.8.tgz#c07b211c7c952ec1f8efd51a77ef0d1d3990a292"
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+chrome-launcher@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/chrome-launcher/-/chrome-launcher-0.4.0.tgz#805e4a90d3d16c93655216aeba1fe880922ecc1f"
+  dependencies:
+    "@types/core-js" "^0.9.41"
+    "@types/mkdirp" "^0.3.29"
+    "@types/node" "6.0.66"
+    lighthouse-logger "^1.0.0"
+    mkdirp "0.5.1"
+    rimraf "^2.6.1"
+
+chrome-remote-interface@^0.24.3:
+  version "0.24.3"
+  resolved "https://registry.yarnpkg.com/chrome-remote-interface/-/chrome-remote-interface-0.24.3.tgz#ee38252fd43bea435dd1dbb74f4b90d179186bc9"
+  dependencies:
+    commander "2.1.x"
+    ws "2.0.x"
+
+[email protected]:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.1.0.tgz#d121bbae860d9992a3d517ba96f56588e47c6781"
+
+[email protected]:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+
+debug@^2.6.8:
+  version "2.6.8"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
+  dependencies:
+    ms "2.0.0"
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+
+glob@^7.0.5:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
+
+lighthouse-logger@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/lighthouse-logger/-/lighthouse-logger-1.0.0.tgz#c6abdfbbbf0b4a541ab33864802cbad8944bcc8c"
+  dependencies:
+    debug "^2.6.8"
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  dependencies:
+    brace-expansion "^1.1.7"
+
+[email protected]:
+  version "0.0.8"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.8.tgz#857fcabfc3397d2625b8228262e86aa7a011b05d"
+
+minimist@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+
+[email protected]:
+  version "0.5.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
+  dependencies:
+    minimist "0.0.8"
+
+[email protected]:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  dependencies:
+    wrappy "1"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+
+rimraf@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.1.tgz#c2338ec643df7a1b7fe5c54fa86f57428a55f33d"
+  dependencies:
+    glob "^7.0.5"
+
+ultron@~1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/ultron/-/ultron-1.1.0.tgz#b07a2e6a541a815fc6a34ccd4533baec307ca864"
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+
+[email protected]:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-2.0.3.tgz#532fd499c3f7d7d720e543f1f807106cfc57d9cb"
+  dependencies:
+    ultron "~1.1.0"